diff --git a/apps/mcp/src/__tests__/tools.test.ts b/apps/mcp/src/__tests__/tools.test.ts
index 57ee249..60c7755 100644
--- a/apps/mcp/src/__tests__/tools.test.ts
+++ b/apps/mcp/src/__tests__/tools.test.ts
@@ -228,7 +228,7 @@ describe("Plant tools", () => {
     it("list_plants output has correct shape", async () => {
       const { mockClient } = createMockDb();
       const { data } = await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("*")
         .eq("user_id", userId)
         .is("deleted_at", null)
@@ -288,7 +288,7 @@ describe("Plant tools", () => {
     it("list_plants queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("*")
         .eq("user_id", userId)
         .is("deleted_at", null)
@@ -300,7 +300,7 @@ describe("Plant tools", () => {
     it("get_plant queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("*")
         .eq("id", "plant-1")
         .eq("user_id", userId)
@@ -332,7 +332,7 @@ describe("Plant tools", () => {
 
       // Simulate the handler logic
       const { data: plant, error: plantError } = await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", "plant-1")
         .eq("user_id", userId)
@@ -363,7 +363,7 @@ describe("Plant tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: plant, error: checkError } = await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", "plant-1")
         .eq("user_id", userId)
@@ -568,7 +568,7 @@ describe("Care tools", () => {
     it("list_care_schedules queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       let query = (mockClient as any)
-        .from("care_schedules")
+        .from("opensprout_care_schedules")
         .select("*")
         .eq("user_id", userId)
         .eq("active", true)
@@ -583,7 +583,7 @@ describe("Care tools", () => {
     it("list_care_logs queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       await (mockClient as any)
-        .from("care_logs")
+        .from("opensprout_care_logs")
         .select("*")
         .eq("user_id", userId)
         .eq("plant_id", "plant-1")
@@ -597,7 +597,7 @@ describe("Care tools", () => {
     it("list_task_instances queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       await (mockClient as any)
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("*")
         .eq("user_id", userId)
         .is("deleted_at", null)
@@ -625,7 +625,7 @@ describe("Care tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: plant, error: plantError } = await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", "plant-1")
         .eq("user_id", userId)
@@ -655,7 +655,7 @@ describe("Care tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: plant, error: plantError } = await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", "plant-1")
         .eq("user_id", userId)
@@ -685,7 +685,7 @@ describe("Care tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: task, error: taskError } = await (mockClient as any)
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("id")
         .eq("id", "task-1")
         .eq("user_id", userId)
@@ -715,7 +715,7 @@ describe("Care tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: task, error: taskError } = await (mockClient as any)
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("id")
         .eq("id", "task-1")
         .eq("user_id", userId)
@@ -843,7 +843,7 @@ describe("Journal tools", () => {
     it("list_journal_entries queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       await (mockClient as any)
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("*")
         .eq("user_id", userId)
         .eq("plant_id", "plant-1")
@@ -857,7 +857,7 @@ describe("Journal tools", () => {
     it("get_journal_entry queries with .eq('user_id', userId)", async () => {
       const { mockClient, mockQuery } = createMockDb();
       await (mockClient as any)
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("*")
         .eq("id", "entry-1")
         .eq("user_id", userId)
@@ -886,7 +886,7 @@ describe("Journal tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: plant, error: plantError } = await (mockClient as any)
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", "plant-1")
         .eq("user_id", userId)
@@ -916,7 +916,7 @@ describe("Journal tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: entry, error: checkError } = await (mockClient as any)
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("id")
         .eq("id", "entry-1")
         .eq("user_id", userId)
@@ -946,7 +946,7 @@ describe("Journal tools", () => {
       (mockClient as any).from.mockReturnValue(ownershipChain);
 
       const { data: entry, error: checkError } = await (mockClient as any)
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("id")
         .eq("id", "entry-1")
         .eq("user_id", userId)
diff --git a/apps/mcp/src/supabase.ts b/apps/mcp/src/supabase.ts
index 2a9524a..066e953 100644
--- a/apps/mcp/src/supabase.ts
+++ b/apps/mcp/src/supabase.ts
@@ -71,7 +71,7 @@ export async function authenticateToken(
 
   // Look up the token hash
   const { data: records, error: lookupError } = await (admin
-    .from("mcp_tokens") as any)
+    .from("opensprout_mcp_tokens") as any)
     .select("user_id, id, revoked_at")
     .eq("token_hash", tokenHash);
 
@@ -94,7 +94,7 @@ export async function authenticateToken(
   }
 
   // Update last_used_at
-  await (admin.from("mcp_tokens") as any)
+  await (admin.from("opensprout_mcp_tokens") as any)
     .update({ last_used_at: new Date().toISOString() } as any)
     .eq("id", record.id);
 
diff --git a/apps/mcp/src/tools/care.ts b/apps/mcp/src/tools/care.ts
index 0de5e13..20de132 100644
--- a/apps/mcp/src/tools/care.ts
+++ b/apps/mcp/src/tools/care.ts
@@ -29,7 +29,7 @@ export function registerCareTools(
     },
     async ({ plantId }) => {
       let query = getClient()
-        .from("care_schedules")
+        .from("opensprout_care_schedules")
         .select("*")
         .eq("user_id", userId)
         .eq("active", true)
@@ -63,7 +63,7 @@ export function registerCareTools(
     },
     async ({ plantId, limit }) => {
       const { data, error } = await getClient()
-        .from("care_logs")
+        .from("opensprout_care_logs")
         .select("*")
         .eq("user_id", userId)
         .eq("plant_id", plantId)
@@ -95,7 +95,7 @@ export function registerCareTools(
     },
     async ({ plantId, status }) => {
       let query = getClient()
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("*")
         .eq("user_id", userId)
         .is("deleted_at", null);
@@ -137,7 +137,7 @@ export function registerCareTools(
 
       // Ownership check: verify plant belongs to this user
       const { data: plant, error: plantError } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -146,7 +146,7 @@ export function registerCareTools(
       if (plantError || !plant) throw new Error("Plant not found or access denied");
 
       const { data: log, error: logError } = await c
-        .from("care_logs")
+        .from("opensprout_care_logs")
         .insert({
           plant_id: plantId,
           user_id: userId,
@@ -161,7 +161,7 @@ export function registerCareTools(
 
       if (taskInstanceId) {
         await c
-          .from("task_instances")
+          .from("opensprout_task_instances")
           .update({
             status: "done",
             completed_at: new Date().toISOString(),
@@ -188,7 +188,7 @@ export function registerCareTools(
       const c = getClient() as any;
 
       const { data: tasks, error: taskError } = await c
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("*")
         .eq("id", taskId)
         .eq("user_id", userId)
@@ -203,7 +203,7 @@ export function registerCareTools(
       const now = new Date().toISOString();
 
       const { data: log, error: logError } = await c
-        .from("care_logs")
+        .from("opensprout_care_logs")
         .insert({
           plant_id: task.plant_id,
           user_id: userId,
@@ -217,7 +217,7 @@ export function registerCareTools(
       if (logError) throw new Error("Failed to create care log for task completion: " + logError.message);
 
       await c
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .update({
           status: "done",
           completed_at: now,
@@ -258,7 +258,7 @@ export function registerCareTools(
 
       // Verify plant ownership
       const { data: plant, error: plantError } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -270,7 +270,7 @@ export function registerCareTools(
       }
 
       const { data, error } = await c
-        .from("care_schedules")
+        .from("opensprout_care_schedules")
         .insert({
           plant_id: plantId,
           user_id: userId,
@@ -306,7 +306,7 @@ export function registerCareTools(
 
       // Ownership check
       const { data: task, error: taskError } = await c
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("id")
         .eq("id", taskId)
         .eq("user_id", userId)
@@ -318,7 +318,7 @@ export function registerCareTools(
       }
 
       const { error } = await c
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .update({
           status: "skipped",
           skipped_at: new Date().toISOString(),
@@ -351,8 +351,8 @@ export function registerCareTools(
     async ({ days }) => {
       const futureDate = new Date(Date.now() + days * 86400000).toISOString();
       const { data, error } = await getClient()
-        .from("task_instances")
-        .select("*, plants!inner(name, location)")
+        .from("opensprout_task_instances")
+        .select("*, opensprout_plants!inner(name, location)")
         .eq("user_id", userId)
         .eq("status", "pending")
         .is("deleted_at", null)
@@ -381,7 +381,7 @@ export function registerCareTools(
 
       // Ownership check
       const { data: task, error: taskError } = await c
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .select("id")
         .eq("id", taskId)
         .eq("user_id", userId)
@@ -393,7 +393,7 @@ export function registerCareTools(
       }
 
       const { error } = await c
-        .from("task_instances")
+        .from("opensprout_task_instances")
         .update({
           status: "snoozed",
           snoozed_until: until,
diff --git a/apps/mcp/src/tools/export.ts b/apps/mcp/src/tools/export.ts
index a4b5b45..0cc30f8 100644
--- a/apps/mcp/src/tools/export.ts
+++ b/apps/mcp/src/tools/export.ts
@@ -16,27 +16,27 @@ export function registerExportTools(
       const [plants, careSchedules, careLogs, taskInstances, journalEntries] =
         await Promise.all([
           c
-            .from("plants")
+            .from("opensprout_plants")
             .select("*")
             .eq("user_id", userId)
             .is("deleted_at", null),
           c
-            .from("care_schedules")
+            .from("opensprout_care_schedules")
             .select("*")
             .eq("user_id", userId)
             .is("deleted_at", null),
           c
-            .from("care_logs")
+            .from("opensprout_care_logs")
             .select("*")
             .eq("user_id", userId)
             .is("deleted_at", null),
           c
-            .from("task_instances")
+            .from("opensprout_task_instances")
             .select("*")
             .eq("user_id", userId)
             .is("deleted_at", null),
           c
-            .from("journal_entries")
+            .from("opensprout_journal_entries")
             .select("*")
             .eq("user_id", userId)
             .is("deleted_at", null),
diff --git a/apps/mcp/src/tools/journal.ts b/apps/mcp/src/tools/journal.ts
index 3c1a876..d586a06 100644
--- a/apps/mcp/src/tools/journal.ts
+++ b/apps/mcp/src/tools/journal.ts
@@ -20,7 +20,7 @@ export function registerJournalTools(
     },
     async ({ plantId, limit }) => {
       const { data, error } = await getClient()
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("*")
         .eq("user_id", userId)
         .eq("plant_id", plantId)
@@ -45,7 +45,7 @@ export function registerJournalTools(
     },
     async ({ entryId }) => {
       const { data, error } = await getClient()
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("*")
         .eq("id", entryId)
         .eq("user_id", userId)
@@ -90,7 +90,7 @@ export function registerJournalTools(
 
       // Ownership check: verify plant belongs to this user
       const { data: plant, error: plantError } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -99,7 +99,7 @@ export function registerJournalTools(
       if (plantError || !plant) throw new Error("Plant not found or access denied");
 
       const { data, error } = await c
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .insert({
           plant_id: plantId,
           user_id: userId,
@@ -145,7 +145,7 @@ export function registerJournalTools(
 
       // Ownership check
       const { data: entry, error: checkError } = await c
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("id")
         .eq("id", entryId)
         .eq("user_id", userId)
@@ -163,7 +163,7 @@ export function registerJournalTools(
       if (tags !== undefined) updates.tags = tags;
 
       const { data, error } = await c
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .update(updates)
         .eq("id", entryId)
         .select()
@@ -190,7 +190,7 @@ export function registerJournalTools(
 
       // Ownership check
       const { data: entry, error: checkError } = await c
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .select("id")
         .eq("id", entryId)
         .eq("user_id", userId)
@@ -202,7 +202,7 @@ export function registerJournalTools(
       }
 
       const { error } = await c
-        .from("journal_entries")
+        .from("opensprout_journal_entries")
         .update({ deleted_at: new Date().toISOString() })
         .eq("id", entryId);
 
diff --git a/apps/mcp/src/tools/knowledge.ts b/apps/mcp/src/tools/knowledge.ts
index b6f1bbb..91dda75 100644
--- a/apps/mcp/src/tools/knowledge.ts
+++ b/apps/mcp/src/tools/knowledge.ts
@@ -18,7 +18,7 @@ export function registerKnowledgeTools(
     },
     async ({ query, category }) => {
       let dbQuery = getClient()
-        .from("knowledge_articles")
+        .from("opensprout_knowledge_articles")
         .select("*")
         .or(`title.ilike.%${query}%,body.ilike.%${query}%`);
 
@@ -47,7 +47,7 @@ export function registerKnowledgeTools(
     },
     async ({ symptom }) => {
       const { data, error } = await getClient()
-        .from("diagnosis_entries")
+        .from("opensprout_diagnosis_entries")
         .select("*")
         .or(`symptom.ilike.%${symptom}%,cause.ilike.%${symptom}%`)
         .order("sort_order")
diff --git a/apps/mcp/src/tools/plants.ts b/apps/mcp/src/tools/plants.ts
index cc9df7b..022e255 100644
--- a/apps/mcp/src/tools/plants.ts
+++ b/apps/mcp/src/tools/plants.ts
@@ -13,7 +13,7 @@ export function registerPlantTools(
     {},
     async () => {
       const { data, error } = await getClient()
-        .from("plants")
+        .from("opensprout_plants")
         .select("*")
         .eq("user_id", userId)
         .is("deleted_at", null)
@@ -35,7 +35,7 @@ export function registerPlantTools(
     },
     async ({ query }) => {
       const { data, error } = await getClient()
-        .from("plants")
+        .from("opensprout_plants")
         .select("*")
         .eq("user_id", userId)
         .or(`name.ilike.%${query}%,location.ilike.%${query}%,species.ilike.%${query}%`)
@@ -58,7 +58,7 @@ export function registerPlantTools(
     },
     async ({ plantId }) => {
       const { data, error } = await getClient()
-        .from("plants")
+        .from("opensprout_plants")
         .select("*")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -109,7 +109,7 @@ export function registerPlantTools(
 
       // Ownership check: verify plant belongs to this user
       const { data: plant, error: plantError } = await getClient()
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -119,7 +119,7 @@ export function registerPlantTools(
 
       const c = getClient() as any;
       const { data, error } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .update(updates)
         .eq("id", plantId)
         .is("deleted_at", null)
@@ -155,7 +155,7 @@ export function registerPlantTools(
     async ({ name, speciesId, species, location, notes, healthStatus, nickname, acquiredOn }) => {
       const c = getClient() as any;
       const { data, error } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .insert({
           name,
           user_id: userId,
@@ -191,7 +191,7 @@ export function registerPlantTools(
 
       // Ownership check
       const { data: plant, error: checkError } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -203,7 +203,7 @@ export function registerPlantTools(
       }
 
       const { error } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .update({ deleted_at: new Date().toISOString() })
         .eq("id", plantId);
 
@@ -228,7 +228,7 @@ export function registerPlantTools(
 
       // Ownership check
       const { data: plant, error: checkError } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -240,7 +240,7 @@ export function registerPlantTools(
       }
 
       const { error } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .update({ archived_at: new Date().toISOString() })
         .eq("id", plantId);
 
@@ -265,7 +265,7 @@ export function registerPlantTools(
 
       // Ownership check
       const { data: plant, error: checkError } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .select("id")
         .eq("id", plantId)
         .eq("user_id", userId)
@@ -277,7 +277,7 @@ export function registerPlantTools(
       }
 
       const { error } = await c
-        .from("plants")
+        .from("opensprout_plants")
         .update({ archived_at: null })
         .eq("id", plantId);
 
diff --git a/apps/mcp/src/tools/species.ts b/apps/mcp/src/tools/species.ts
index e8788bd..9cc5e70 100644
--- a/apps/mcp/src/tools/species.ts
+++ b/apps/mcp/src/tools/species.ts
@@ -14,7 +14,7 @@ export function registerSpeciesTools(
     },
     async ({ query }) => {
       const { data, error } = await getClient()
-        .from("plant_species")
+        .from("opensprout_plant_species")
         .select("*")
         .or(`common_name.ilike.%${query}%,scientific_name.ilike.%${query}%`)
         .limit(20);
@@ -37,7 +37,7 @@ export function registerSpeciesTools(
     async ({ speciesId }) => {
       const client = getClient();
       const { data: species, error: speciesError } = await client
-        .from("plant_species")
+        .from("opensprout_plant_species")
         .select("*")
         .eq("id", speciesId)
         .single();
@@ -50,7 +50,7 @@ export function registerSpeciesTools(
       }
 
       const { data: articles } = await client
-        .from("knowledge_articles")
+        .from("opensprout_knowledge_articles")
         .select("*")
         .eq("species_id", speciesId)
         .order("sort_order");
diff --git a/apps/mcp/src/types.ts b/apps/mcp/src/types.ts
index a39b07d..85e471e 100644
--- a/apps/mcp/src/types.ts
+++ b/apps/mcp/src/types.ts
@@ -26,7 +26,7 @@ export type CareType =
 export type Database = {
   public: {
     Tables: {
-      plants: {
+      opensprout_plants: {
         Row: {
           id: string;
           user_id: string;
@@ -74,7 +74,7 @@ export type Database = {
           updated_at?: string;
         };
       };
-      plant_species: {
+      opensprout_plant_species: {
         Row: {
           id: string;
           common_name: string;
@@ -106,7 +106,7 @@ export type Database = {
           updated_at: string;
         };
       };
-      care_schedules: {
+      opensprout_care_schedules: {
         Row: {
           id: string;
           user_id: string;
@@ -132,7 +132,7 @@ export type Database = {
           updated_at: string;
         };
       };
-      care_logs: {
+      opensprout_care_logs: {
         Row: {
           id: string;
           user_id: string;
@@ -163,7 +163,7 @@ export type Database = {
           task_instance_id?: string | null;
         };
       };
-      task_instances: {
+      opensprout_task_instances: {
         Row: {
           id: string;
           user_id: string;
@@ -188,7 +188,7 @@ export type Database = {
           updated_at: string;
         };
       };
-      journal_entries: {
+      opensprout_journal_entries: {
         Row: {
           id: string;
           user_id: string;
@@ -216,7 +216,7 @@ export type Database = {
           tags?: string[];
         };
       };
-      knowledge_articles: {
+      opensprout_knowledge_articles: {
         Row: {
           id: string;
           species_id: string;
@@ -231,7 +231,7 @@ export type Database = {
           updated_at: string;
         };
       };
-      diagnosis_entries: {
+      opensprout_diagnosis_entries: {
         Row: {
           id: string;
           species_id: string;
diff --git a/apps/web/src/app/(authenticated)/calendar/page.tsx b/apps/web/src/app/(authenticated)/calendar/page.tsx
index d4c5427..05615af 100644
--- a/apps/web/src/app/(authenticated)/calendar/page.tsx
+++ b/apps/web/src/app/(authenticated)/calendar/page.tsx
@@ -96,7 +96,7 @@ async function fetchMonthTasks(
   const endStr = `${year}-${String(month + 1).padStart(2, "0")}-${String(daysInMonth).padStart(2, "0")}T23:59:59`;
 
   const { data: plants } = await client
-    .from("plants")
+    .from("opensprout_plants")
     .select("id, name, location")
     .eq("user_id", userId)
     .is("deleted_at", null);
@@ -106,7 +106,7 @@ async function fetchMonthTasks(
   );
 
   const { data: tasks, error } = await client
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .select("*")
     .eq("user_id", userId)
     .in("status", ["pending", "snoozed"])
diff --git a/apps/web/src/app/api/mcp/tokens/[id]/route.ts b/apps/web/src/app/api/mcp/tokens/[id]/route.ts
index da3c05d..8fc77a9 100644
--- a/apps/web/src/app/api/mcp/tokens/[id]/route.ts
+++ b/apps/web/src/app/api/mcp/tokens/[id]/route.ts
@@ -30,7 +30,7 @@ export async function DELETE(
   // Verify the token belongs to the current user
   const admin = createAdminClient();
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const { data: existing, error: lookupError } = await (admin.from("mcp_tokens") as any)
+  const { data: existing, error: lookupError } = await (admin.from("opensprout_mcp_tokens") as any)
     .select("id, user_id, revoked_at")
     .eq("id", id)
     .single();
@@ -58,7 +58,7 @@ export async function DELETE(
   }
 
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  await (admin.from("mcp_tokens") as any)
+  await (admin.from("opensprout_mcp_tokens") as any)
     .update({ revoked_at: new Date().toISOString() })
     .eq("id", id);
 
diff --git a/apps/web/src/app/api/mcp/tokens/route.ts b/apps/web/src/app/api/mcp/tokens/route.ts
index 5784ec2..6b96891 100644
--- a/apps/web/src/app/api/mcp/tokens/route.ts
+++ b/apps/web/src/app/api/mcp/tokens/route.ts
@@ -62,7 +62,7 @@ export async function POST(request: Request) {
   // Store hash + prefix
   const admin = createAdminClient();
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const { error: insertError } = await (admin.from("mcp_tokens") as any)
+  const { error: insertError } = await (admin.from("opensprout_mcp_tokens") as any)
     .insert({
       name,
       user_id: user.id,
@@ -102,7 +102,7 @@ export async function GET() {
 
   const admin = createAdminClient();
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const { data, error } = await (admin.from("mcp_tokens") as any)
+  const { data, error } = await (admin.from("opensprout_mcp_tokens") as any)
     .select("id, name, token_prefix, last_used_at, created_at, revoked_at")
     .eq("user_id", user.id)
     .order("created_at", { ascending: false });
diff --git a/apps/web/src/lib/data/db.ts b/apps/web/src/lib/data/db.ts
index 1457bfa..f6a58c3 100644
--- a/apps/web/src/lib/data/db.ts
+++ b/apps/web/src/lib/data/db.ts
@@ -12,12 +12,12 @@ const DB_VERSION = 1;
  * They use the record's `id` as the key path.
  */
 const CACHE_STORES = [
-  "plants",
-  "schedules",
-  "tasks",
-  "logs",
-  "journalEntries",
-  "journalPhotos",
+  "opensprout_plants",
+  "opensprout_care_schedules",
+  "opensprout_task_instances",
+  "opensprout_care_logs",
+  "opensprout_journal_entries",
+  "opensprout_journal_photos",
 ] as const;
 
 
diff --git a/apps/web/src/lib/data/identify-history.ts b/apps/web/src/lib/data/identify-history.ts
index 99c8788..ccdb8d0 100644
--- a/apps/web/src/lib/data/identify-history.ts
+++ b/apps/web/src/lib/data/identify-history.ts
@@ -28,15 +28,15 @@ export async function saveIdentification(
   },
 ): Promise<string> {
   const { data: inserted, error } = await supabase
-    .from("identifications")
+    .from("opensprout_identifications")
     .insert({
       user_id: userId,
       photo_path: data.photo_path,
-      results: data.results as Database["public"]["Tables"]["identifications"]["Insert"]["results"],
+      results: data.results as Database["public"]["Tables"]["opensprout_identifications"]["Insert"]["results"],
       selected_species_id: data.selected_species_id ?? null,
       selected_name: data.selected_name ?? null,
       confidence: data.confidence ?? null,
-      diagnosis: (data.diagnosis as Database["public"]["Tables"]["identifications"]["Insert"]["diagnosis"]) ?? null,
+      diagnosis: (data.diagnosis as Database["public"]["Tables"]["opensprout_identifications"]["Insert"]["diagnosis"]) ?? null,
     })
     .select("id")
     .single();
@@ -54,7 +54,7 @@ export async function listIdentifications(
   limit?: number,
 ): Promise<IdentificationRecord[]> {
   let query = supabase
-    .from("identifications")
+    .from("opensprout_identifications")
     .select("*")
     .eq("user_id", userId)
     .order("created_at", { ascending: false });
@@ -78,7 +78,7 @@ export async function getIdentification(
   id: string,
 ): Promise<IdentificationRecord | null> {
   const { data, error } = await supabase
-    .from("identifications")
+    .from("opensprout_identifications")
     .select("*")
     .eq("id", id)
     .eq("user_id", userId)
@@ -99,7 +99,7 @@ export async function updateIdentificationSelection(
   name: string | null,
 ): Promise<void> {
   const { error } = await supabase
-    .from("identifications")
+    .from("opensprout_identifications")
     .update({
       selected_species_id: speciesId,
       selected_name: name,
@@ -110,7 +110,7 @@ export async function updateIdentificationSelection(
   if (error) throw error;
 }
 
-type IdentificationsRow = Database["public"]["Tables"]["identifications"]["Row"];
+type IdentificationsRow = Database["public"]["Tables"]["opensprout_identifications"]["Row"];
 
 /**
  * Maps a raw Supabase row to our IdentificationRecord type.
diff --git a/apps/web/src/lib/data/identify.ts b/apps/web/src/lib/data/identify.ts
index 3197ab7..547a3ea 100644
--- a/apps/web/src/lib/data/identify.ts
+++ b/apps/web/src/lib/data/identify.ts
@@ -115,7 +115,7 @@ export async function diagnoseFromPhotoAndSymptoms(
   let speciesId: string | undefined;
   if (identifyResult.bestMatch) {
     const { data: speciesRows } = await supabase
-      .from("plant_species")
+      .from("opensprout_plant_species")
       .select("id")
       .or(
         `scientific_name.eq.${identifyResult.bestMatch.scientificName},common_name.eq.${identifyResult.bestMatch.scientificName}`,
diff --git a/apps/web/src/lib/data/import.ts b/apps/web/src/lib/data/import.ts
index 312ad88..0d86a49 100644
--- a/apps/web/src/lib/data/import.ts
+++ b/apps/web/src/lib/data/import.ts
@@ -223,7 +223,7 @@ export async function executeImport(
     }));
 
     const { data: plantsResult, error: plantsError } = await supabase
-      .from("plants")
+      .from("opensprout_plants")
       .upsert(plantRecords as never, {
         onConflict: "client_id",
         ignoreDuplicates: false,
@@ -247,7 +247,7 @@ export async function executeImport(
 
     if (clientIds.length > 0) {
       const { data: fetched } = await supabase
-        .from("plants")
+        .from("opensprout_plants")
         .select("id, client_id")
         .eq("user_id", userId)
         .in("client_id", clientIds);
@@ -286,7 +286,7 @@ export async function executeImport(
     });
 
     const { data: schedulesResult, error: schedulesError } = await supabase
-      .from("care_schedules")
+      .from("opensprout_care_schedules")
       .upsert(scheduleRecords as never, {
         onConflict: "client_id",
         ignoreDuplicates: false,
@@ -312,7 +312,7 @@ export async function executeImport(
     });
 
     const { data: logsResult, error: logsError } = await supabase
-      .from("care_logs")
+      .from("opensprout_care_logs")
       .upsert(logRecords as never, {
         onConflict: "client_id",
         ignoreDuplicates: false,
diff --git a/apps/web/src/lib/data/journal.ts b/apps/web/src/lib/data/journal.ts
index 5f63d7c..e6c7367 100644
--- a/apps/web/src/lib/data/journal.ts
+++ b/apps/web/src/lib/data/journal.ts
@@ -58,7 +58,7 @@ export async function createJournalEntry(
 ): Promise<JournalEntryRow> {
   const timestamp = nowIso();
   const { data, error } = await supabase
-    .from("journal_entries")
+    .from("opensprout_journal_entries")
     .insert({
       user_id: userId,
       plant_id: input.plant_id,
@@ -86,7 +86,7 @@ export async function updateJournalEntry(
 ): Promise<JournalEntryRow> {
   const timestamp = nowIso();
   const { data, error } = await supabase
-    .from("journal_entries")
+    .from("opensprout_journal_entries")
     .update({
       title: input.title?.trim() ?? undefined,
       body: input.body?.trim() ?? undefined,
@@ -111,7 +111,7 @@ export async function deleteJournalEntry(
 ): Promise<void> {
   // Soft delete — mark deleted_at
   const { error } = await supabase
-    .from("journal_entries")
+    .from("opensprout_journal_entries")
     .update({ deleted_at: nowIso() })
     .eq("id", entryId)
     .eq("user_id", userId);
@@ -125,7 +125,7 @@ export async function getJournalEntry(
   entryId: string,
 ): Promise<JournalEntryWithPhotos | null> {
   const { data: entry, error: entryError } = await supabase
-    .from("journal_entries")
+    .from("opensprout_journal_entries")
     .select("*")
     .eq("id", entryId)
     .eq("user_id", userId)
@@ -136,7 +136,7 @@ export async function getJournalEntry(
   if (!entry) return null;
 
   const { data: photos, error: photosError } = await supabase
-    .from("journal_photos")
+    .from("opensprout_journal_photos")
     .select("*")
     .eq("journal_entry_id", entryId)
     .eq("user_id", userId)
@@ -157,7 +157,7 @@ export async function listJournalEntries(
   filter?: JournalFilter,
 ): Promise<JournalEntryWithPhotos[]> {
   let query = supabase
-    .from("journal_entries")
+    .from("opensprout_journal_entries")
     .select("*")
     .eq("user_id", userId)
     .is("deleted_at", null);
@@ -182,7 +182,7 @@ export async function listJournalEntries(
   // Fetch photos for all entries in one query
   const entryIds = entries.map((e) => e.id);
   const { data: allPhotos, error: photosError } = await supabase
-    .from("journal_photos")
+    .from("opensprout_journal_photos")
     .select("*")
     .eq("user_id", userId)
     .in("journal_entry_id", entryIds)
diff --git a/apps/web/src/lib/data/knowledge.ts b/apps/web/src/lib/data/knowledge.ts
index 89e1631..1f242d3 100644
--- a/apps/web/src/lib/data/knowledge.ts
+++ b/apps/web/src/lib/data/knowledge.ts
@@ -8,7 +8,7 @@ export async function getSpeciesById(
   id: string,
 ): Promise<PlantSpeciesRow | null> {
   const { data, error } = await supabase
-    .from("plant_species")
+    .from("opensprout_plant_species")
     .select("*")
     .eq("id", id)
     .maybeSingle();
@@ -27,7 +27,7 @@ export async function searchSpecies(
   const lowered = trimmed.toLowerCase();
 
   const { data, error } = await supabase
-    .from("plant_species")
+    .from("opensprout_plant_species")
     .select("*")
     .limit(50);
 
@@ -69,7 +69,7 @@ export async function getKnowledgeArticles(
   speciesId: string,
 ): Promise<KnowledgeArticleRow[]> {
   const { data, error } = await supabase
-    .from("knowledge_articles")
+    .from("opensprout_knowledge_articles")
     .select("*")
     .eq("species_id", speciesId)
     .order("sort_order", { ascending: true });
@@ -83,7 +83,7 @@ export async function getDiagnosisEntries(
   speciesId?: string,
 ): Promise<DiagnosisEntryRow[]> {
   let query = supabase
-    .from("diagnosis_entries")
+    .from("opensprout_diagnosis_entries")
     .select("*")
     .order("sort_order", { ascending: true });
 
@@ -106,7 +106,7 @@ export async function getDiagnosisByCategory(
   category: DiagnosisEntryRow["category"],
 ): Promise<DiagnosisEntryRow[]> {
   const { data, error } = await supabase
-    .from("diagnosis_entries")
+    .from("opensprout_diagnosis_entries")
     .select("*")
     .eq("category", category)
     .order("sort_order", { ascending: true });
diff --git a/apps/web/src/lib/data/mcp-tokens.ts b/apps/web/src/lib/data/mcp-tokens.ts
index d57eed2..cd20fd3 100644
--- a/apps/web/src/lib/data/mcp-tokens.ts
+++ b/apps/web/src/lib/data/mcp-tokens.ts
@@ -45,7 +45,7 @@ export async function listMcpTokens(
   userId: string,
 ): Promise<McpToken[]> {
   const { data, error } = await supabase
-    .from("mcp_tokens")
+    .from("opensprout_mcp_tokens")
     .select("id, user_id, name, token_prefix, last_used_at, created_at, revoked_at")
     .eq("user_id", userId)
     .order("created_at", { ascending: false });
@@ -64,7 +64,7 @@ export async function createMcpToken(
   const prefix = getTokenPrefix(rawToken);
 
   const { data, error } = await (supabase as any) // eslint-disable-line @typescript-eslint/no-explicit-any
-    .from("mcp_tokens")
+    .from("opensprout_mcp_tokens")
     .insert({
       user_id: userId,
       name,
@@ -85,7 +85,7 @@ export async function revokeMcpToken(
   userId: string,
 ): Promise<void> {
   const { error } = await (supabase as any) // eslint-disable-line @typescript-eslint/no-explicit-any
-    .from("mcp_tokens")
+    .from("opensprout_mcp_tokens")
     .update({ revoked_at: new Date().toISOString() })
     .eq("id", tokenId)
     .eq("user_id", userId);
diff --git a/apps/web/src/lib/data/photos.ts b/apps/web/src/lib/data/photos.ts
index 7c68209..a577618 100644
--- a/apps/web/src/lib/data/photos.ts
+++ b/apps/web/src/lib/data/photos.ts
@@ -65,7 +65,7 @@ export async function uploadPlantPhoto(
 
   // Save metadata to journal_photos
   const { data: photoRow, error: insertError } = await supabase
-    .from("journal_photos")
+    .from("opensprout_journal_photos")
     .insert({
       user_id: userId,
       plant_id: plantId,
@@ -169,7 +169,7 @@ export async function setPlantCoverPhoto(
   coverObjectPath: string | null,
 ): Promise<void> {
   const { error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .update({ cover_photo_path: coverObjectPath })
     .eq("id", plantId)
     .eq("user_id", userId);
@@ -205,7 +205,7 @@ export async function deletePhoto(
 ): Promise<void> {
   // Fetch photo to get object path
   const { data: photo, error: fetchError } = await supabase
-    .from("journal_photos")
+    .from("opensprout_journal_photos")
     .select("object_path")
     .eq("id", photoId)
     .eq("user_id", userId)
@@ -223,7 +223,7 @@ export async function deletePhoto(
 
   // Soft delete metadata
   const { error: deleteError } = await supabase
-    .from("journal_photos")
+    .from("opensprout_journal_photos")
     .update({ deleted_at: nowIso() })
     .eq("id", photoId)
     .eq("user_id", userId);
@@ -240,7 +240,7 @@ export async function listPlantPhotos(
   plantId: string,
 ): Promise<JournalPhotoRow[]> {
   const { data, error } = await supabase
-    .from("journal_photos")
+    .from("opensprout_journal_photos")
     .select("*")
     .eq("user_id", userId)
     .eq("plant_id", plantId)
diff --git a/apps/web/src/lib/data/plants.ts b/apps/web/src/lib/data/plants.ts
index cff18c8..5481093 100644
--- a/apps/web/src/lib/data/plants.ts
+++ b/apps/web/src/lib/data/plants.ts
@@ -38,7 +38,7 @@ export async function createPlantSchedules(
   const timestamp = nowIso();
   const schedules = presets.map((p) => buildSchedule(userId, plantId, p.careType, p.cadenceDays, timestamp));
 
-  const { error } = await supabase.from("care_schedules").insert(schedules);
+  const { error } = await supabase.from("opensprout_care_schedules").insert(schedules);
   if (error) throw error;
 }
 
@@ -49,7 +49,7 @@ export async function updateCareSchedule(
   input: ScheduleUpdateInput,
 ): Promise<void> {
   const { error } = await supabase
-    .from("care_schedules")
+    .from("opensprout_care_schedules")
     .update({
       ...input,
       client_updated_at: nowIso(),
@@ -66,7 +66,7 @@ export async function deleteCareSchedule(
   scheduleId: string,
 ): Promise<void> {
   const { error } = await supabase
-    .from("care_schedules")
+    .from("opensprout_care_schedules")
     .update({ deleted_at: new Date().toISOString(), active: false, client_updated_at: nowIso() })
     .eq("id", scheduleId)
     .eq("user_id", userId);
@@ -100,20 +100,20 @@ function cleanText(value?: string) {
 export async function listDashboardData(supabase: Client, userId: string): Promise<DashboardData> {
   const [plantsResult, schedulesResult, logsResult] = await Promise.all([
     supabase
-      .from("plants")
+      .from("opensprout_plants")
       .select("*")
       .eq("user_id", userId)
       .is("deleted_at", null)
       .order("updated_at", { ascending: false }),
     supabase
-      .from("care_schedules")
+      .from("opensprout_care_schedules")
       .select("*")
       .eq("user_id", userId)
       .is("deleted_at", null)
       .eq("active", true)
       .order("next_due_at", { ascending: true, nullsFirst: false }),
     supabase
-      .from("care_logs")
+      .from("opensprout_care_logs")
       .select("*")
       .eq("user_id", userId)
       .is("deleted_at", null)
@@ -136,7 +136,7 @@ export async function createPlant(supabase: Client, userId: string, values: Plan
   const validated = validatePlantValues(values);
   const timestamp = nowIso();
   const { data: plant, error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .insert({
       user_id: userId,
       name: validated.name,
@@ -159,7 +159,7 @@ export async function createPlant(supabase: Client, userId: string, values: Plan
 export async function updatePlant(supabase: Client, userId: string, plantId: string, values: PlantFormValues) {
   const validated = validatePlantValues(values);
   const { data, error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .update({
       name: validated.name,
       species_id: cleanText(validated.species_id),
@@ -180,7 +180,7 @@ export async function updatePlant(supabase: Client, userId: string, plantId: str
 
 export async function deletePlant(supabase: Client, userId: string, plantId: string) {
   const { error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .update({ deleted_at: new Date().toISOString() })
     .eq("id", plantId)
     .eq("user_id", userId);
@@ -191,7 +191,7 @@ export async function deletePlant(supabase: Client, userId: string, plantId: str
 
 export async function archivePlant(supabase: Client, userId: string, plantId: string) {
   const { error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .update({ archived_at: new Date().toISOString() })
     .eq("id", plantId)
     .eq("user_id", userId)
@@ -201,7 +201,7 @@ export async function archivePlant(supabase: Client, userId: string, plantId: st
 
 export async function restorePlant(supabase: Client, userId: string, plantId: string) {
   const { error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .update({ archived_at: null })
     .eq("id", plantId)
     .eq("user_id", userId);
@@ -210,7 +210,7 @@ export async function restorePlant(supabase: Client, userId: string, plantId: st
 
 export async function toggleFavorite(supabase: Client, userId: string, plantId: string, isFavorite: boolean) {
   const { error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .update({ is_favorite: isFavorite })
     .eq("id", plantId)
     .eq("user_id", userId);
@@ -238,7 +238,7 @@ export async function listPlantLocations(
   userId: string,
 ): Promise<string[]> {
   const { data, error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .select("location")
     .eq("user_id", userId)
     .is("deleted_at", null)
@@ -257,7 +257,7 @@ export async function getPlantHealthCounts(
   userId: string,
 ): Promise<Record<string, number>> {
   const { data, error } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .select("health_status")
     .eq("user_id", userId)
     .is("deleted_at", null);
@@ -350,7 +350,7 @@ export function sortAndFilterPlants(
 
 export async function markCareDone(supabase: Client, userId: string, plantId: string, careType: CareType) {
   const { data: schedule } = await supabase
-    .from("care_schedules")
+    .from("opensprout_care_schedules")
     .select("*")
     .eq("user_id", userId)
     .eq("plant_id", plantId)
@@ -373,7 +373,7 @@ export async function markCareDone(supabase: Client, userId: string, plantId: st
     custom: "Marked cared for",
   };
   const { data: log, error: logError } = await supabase
-    .from("care_logs")
+    .from("opensprout_care_logs")
     .insert({
       user_id: userId,
       plant_id: plantId,
@@ -398,7 +398,7 @@ export async function markCareDone(supabase: Client, userId: string, plantId: st
         : schedule.cadence_value;
 
     const { error: scheduleError } = await supabase
-      .from("care_schedules")
+      .from("opensprout_care_schedules")
       .update({
         last_completed_at: timestamp,
         next_due_at: addDaysIso(days),
diff --git a/apps/web/src/lib/data/species.ts b/apps/web/src/lib/data/species.ts
index eb3deeb..dfb0bc9 100644
--- a/apps/web/src/lib/data/species.ts
+++ b/apps/web/src/lib/data/species.ts
@@ -5,7 +5,7 @@ type Client = SupabaseClient<Database>;
 
 export async function listPlantSpecies(supabase: Client): Promise<PlantSpeciesRow[]> {
   const { data, error } = await supabase
-    .from("plant_species")
+    .from("opensprout_plant_species")
     .select("*")
     .order("common_name", { ascending: true });
 
@@ -31,7 +31,7 @@ export async function searchPlantSpecies(supabase: Client, query: string): Promi
 
 export async function getPlantSpeciesById(supabase: Client, id: string): Promise<PlantSpeciesRow | null> {
   const { data, error } = await supabase
-    .from("plant_species")
+    .from("opensprout_plant_species")
     .select("*")
     .eq("id", id)
     .maybeSingle();
diff --git a/apps/web/src/lib/data/sync.ts b/apps/web/src/lib/data/sync.ts
index 58bcfd2..6ceed4b 100644
--- a/apps/web/src/lib/data/sync.ts
+++ b/apps/web/src/lib/data/sync.ts
@@ -42,24 +42,24 @@ export type SyncStats = {
  * Maps Supabase table names to local IndexedDB cache store names.
  */
 const TABLE_TO_CACHE: Record<string, string> = {
-  plants: "plants",
-  care_schedules: "schedules",
-  care_logs: "logs",
-  task_instances: "tasks",
-  journal_entries: "journalEntries",
-  journal_photos: "journalPhotos",
+  plants: "opensprout_plants",
+  care_schedules: "opensprout_care_schedules",
+  care_logs: "opensprout_care_logs",
+  task_instances: "opensprout_task_instances",
+  journal_entries: "opensprout_journal_entries",
+  journal_photos: "opensprout_journal_photos",
 };
 
 /**
  * The tables that are pulled during a fresh sync.
  */
 const PULL_TABLES = [
-  "plants",
-  "care_schedules",
-  "care_logs",
-  "task_instances",
-  "journal_entries",
-  "journal_photos",
+  "opensprout_plants",
+  "opensprout_care_schedules",
+  "opensprout_care_logs",
+  "opensprout_task_instances",
+  "opensprout_journal_entries",
+  "opensprout_journal_photos",
 ] as const;
 
 const SUPABASE_URL =
diff --git a/apps/web/src/lib/data/tasks.ts b/apps/web/src/lib/data/tasks.ts
index b62370b..246da53 100644
--- a/apps/web/src/lib/data/tasks.ts
+++ b/apps/web/src/lib/data/tasks.ts
@@ -55,7 +55,7 @@ export async function ensureTaskInstances(
 ): Promise<void> {
   // Fetch active schedules
   const { data: schedules, error: schedError } = await supabase
-    .from("care_schedules")
+    .from("opensprout_care_schedules")
     .select("*")
     .eq("user_id", userId)
     .is("deleted_at", null)
@@ -70,7 +70,7 @@ export async function ensureTaskInstances(
   for (const schedule of schedules) {
     // Find existing pending/snoozed instances for this schedule
     const { data: existing } = await supabase
-      .from("task_instances")
+      .from("opensprout_task_instances")
       .select("id, due_at")
       .eq("user_id", userId)
       .eq("schedule_id", schedule.id)
@@ -92,7 +92,7 @@ export async function ensureTaskInstances(
 
     // Check if one was already completed today
     const { data: completed } = await supabase
-      .from("task_instances")
+      .from("opensprout_task_instances")
       .select("id")
       .eq("user_id", userId)
       .eq("schedule_id", schedule.id)
@@ -106,7 +106,7 @@ export async function ensureTaskInstances(
     // Create a new task instance
     const timestamp = nowIso();
     const { error: insertError } = await supabase
-      .from("task_instances")
+      .from("opensprout_task_instances")
       .insert({
         user_id: userId,
         plant_id: schedule.plant_id,
@@ -143,7 +143,7 @@ export async function listTasks(
 }> {
   // Fetch plants for name resolution
   const { data: plants } = await supabase
-    .from("plants")
+    .from("opensprout_plants")
     .select("id, name, location")
     .eq("user_id", userId)
     .is("deleted_at", null);
@@ -157,7 +157,7 @@ export async function listTasks(
   const todayEnd = now.toISOString().slice(0, 10) + "T23:59:59";
 
   const { data: tasks, error } = await supabase
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .select("*")
     .eq("user_id", userId)
     .in("status", ["pending", "snoozed"])
@@ -214,7 +214,7 @@ export async function completeTask(
 ): Promise<CareLogRow> {
   // Fetch the task
   const { data: task, error: taskError } = await supabase
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .select("*")
     .eq("id", taskId)
     .eq("user_id", userId)
@@ -228,7 +228,7 @@ export async function completeTask(
   let schedule: CareScheduleRow | null = null;
   if (taskRow.schedule_id) {
     const { data: sched } = await supabase
-      .from("care_schedules")
+      .from("opensprout_care_schedules")
       .select("*")
       .eq("id", taskRow.schedule_id as string)
       .eq("user_id", userId)
@@ -241,7 +241,7 @@ export async function completeTask(
 
   // Create care log
   const { data: log, error: logError } = await supabase
-    .from("care_logs")
+    .from("opensprout_care_logs")
     .insert({
       user_id: userId,
       plant_id: taskRow.plant_id,
@@ -264,7 +264,7 @@ export async function completeTask(
 
   // Mark task as done
   const { error: updateError } = await supabase
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .update({
       status: "done",
       completed_log_id: log.id,
@@ -291,7 +291,7 @@ export async function completeTask(
     nextDue.setDate(nextDue.getDate() + days);
 
     await supabase
-      .from("care_schedules")
+      .from("opensprout_care_schedules")
       .update({
         last_completed_at: timestamp,
         next_due_at: nextDue.toISOString(),
@@ -315,7 +315,7 @@ export async function skipTask(
 ): Promise<void> {
   const timestamp = nowIso();
   const { error } = await supabase
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .update({
       status: "skipped",
       client_updated_at: timestamp,
@@ -340,7 +340,7 @@ export async function snoozeTask(
 ): Promise<void> {
   const timestamp = nowIso();
   const { error } = await supabase
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .update({
       status: "snoozed",
       snoozed_until: snoozeUntil,
@@ -366,7 +366,7 @@ export async function rescheduleTask(
 ): Promise<void> {
   const timestamp = nowIso();
   const { error } = await supabase
-    .from("task_instances")
+    .from("opensprout_task_instances")
     .update({
       due_at: newDueAt,
       status: "pending",
@@ -417,7 +417,7 @@ export async function listPlantTimeline(
 ): Promise<TimelineEvent[]> {
   // Fetch care logs
   const { data: logs, error: logError } = await supabase
-    .from("care_logs")
+    .from("opensprout_care_logs")
     .select("*")
     .eq("user_id", userId)
     .eq("plant_id", plantId)
@@ -429,7 +429,7 @@ export async function listPlantTimeline(
 
   // Fetch journal entries with their photos
   const { data: entries, error: entryError } = await supabase
-    .from("journal_entries")
+    .from("opensprout_journal_entries")
     .select("*")
     .eq("user_id", userId)
     .eq("plant_id", plantId)
@@ -444,7 +444,7 @@ export async function listPlantTimeline(
   if (entries && entries.length > 0) {
     const entryIds = entries.map((e) => e.id);
     const { data: photos, error: photosError } = await supabase
-      .from("journal_photos")
+      .from("opensprout_journal_photos")
       .select("journal_entry_id, object_path, content_type")
       .eq("user_id", userId)
       .in("journal_entry_id", entryIds)
@@ -555,8 +555,8 @@ export async function listJournalFeed(
 
   // Fetch care logs with plant name
   const logResponse = await supabase
-    .from("care_logs")
-    .select("*, plants!inner(name)")
+    .from("opensprout_care_logs")
+    .select("*, opensprout_plants!inner(name)")
     .eq("user_id", userId)
     .is("deleted_at", null)
     .order("occurred_at", { ascending: false })
@@ -567,8 +567,8 @@ export async function listJournalFeed(
 
   // Fetch journal entries with plant name
   const entryResponse = await supabase
-    .from("journal_entries")
-    .select("*, plants!inner(name)")
+    .from("opensprout_journal_entries")
+    .select("*, opensprout_plants!inner(name)")
     .eq("user_id", userId)
     .is("deleted_at", null)
     .order("observed_at", { ascending: false })
diff --git a/apps/web/src/lib/data/types.ts b/apps/web/src/lib/data/types.ts
index e43094e..fd03529 100644
--- a/apps/web/src/lib/data/types.ts
+++ b/apps/web/src/lib/data/types.ts
@@ -9,7 +9,7 @@ export type TaskStatus = "pending" | "done" | "skipped" | "snoozed" | "cancelled
 export type Database = {
   public: {
     Tables: {
-      plants: {
+      opensprout_plants: {
         Row: {
           id: string;
           user_id: string;
@@ -58,10 +58,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["plants"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_plants"]["Insert"]>;
         Relationships: [];
       };
-      plant_species: {
+      opensprout_plant_species: {
         Row: {
           id: string;
           common_name: string;
@@ -122,10 +122,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["plant_species"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_plant_species"]["Insert"]>;
         Relationships: [];
       };
-      care_schedules: {
+      opensprout_care_schedules: {
         Row: {
           id: string;
           user_id: string;
@@ -174,10 +174,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["care_schedules"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_care_schedules"]["Insert"]>;
         Relationships: [];
       };
-      care_logs: {
+      opensprout_care_logs: {
         Row: {
           id: string;
           user_id: string;
@@ -220,10 +220,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["care_logs"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_care_logs"]["Insert"]>;
         Relationships: [];
       };
-      profiles: {
+      opensprout_profiles: {
         Row: {
           id: string;
           display_name: string | null;
@@ -240,10 +240,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["profiles"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_profiles"]["Insert"]>;
         Relationships: [];
       };
-      task_instances: {
+      opensprout_task_instances: {
         Row: {
           id: string;
           user_id: string;
@@ -290,10 +290,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["task_instances"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_task_instances"]["Insert"]>;
         Relationships: [];
       };
-      journal_entries: {
+      opensprout_journal_entries: {
         Row: {
           id: string;
           user_id: string;
@@ -330,10 +330,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["journal_entries"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_journal_entries"]["Insert"]>;
         Relationships: [];
       };
-      journal_photos: {
+      opensprout_journal_photos: {
         Row: {
           id: string;
           user_id: string;
@@ -382,10 +382,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["journal_photos"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_journal_photos"]["Insert"]>;
         Relationships: [];
       };
-      data_transfers: {
+      opensprout_data_transfers: {
         Row: {
           id: string;
           user_id: string;
@@ -424,10 +424,10 @@ export type Database = {
           finished_at?: string | null;
           created_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["data_transfers"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_data_transfers"]["Insert"]>;
         Relationships: [];
       };
-      sync_devices: {
+      opensprout_sync_devices: {
         Row: {
           id: string;
           user_id: string;
@@ -452,10 +452,10 @@ export type Database = {
           last_pushed_at?: string | null;
           created_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["sync_devices"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_sync_devices"]["Insert"]>;
         Relationships: [];
       };
-      knowledge_articles: {
+      opensprout_knowledge_articles: {
         Row: {
           id: string;
           species_id: string;
@@ -482,10 +482,10 @@ export type Database = {
           created_at?: string;
           updated_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["knowledge_articles"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_knowledge_articles"]["Insert"]>;
         Relationships: [];
       };
-      diagnosis_entries: {
+      opensprout_diagnosis_entries: {
         Row: {
           id: string;
           species_id: string;
@@ -508,10 +508,10 @@ export type Database = {
           sort_order?: number;
           created_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["diagnosis_entries"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_diagnosis_entries"]["Insert"]>;
         Relationships: [];
       };
-      identifications: {
+      opensprout_identifications: {
         Row: {
           id: string;
           user_id: string;
@@ -536,7 +536,7 @@ export type Database = {
           source?: string;
           created_at?: string;
         };
-        Update: Partial<Database["public"]["Tables"]["identifications"]["Insert"]>;
+        Update: Partial<Database["public"]["Tables"]["opensprout_identifications"]["Insert"]>;
         Relationships: [];
       };
     };
@@ -550,26 +550,26 @@ export type Database = {
   };
 };
 
-export type PlantRow = Database["public"]["Tables"]["plants"]["Row"];
-export type PlantInsert = Database["public"]["Tables"]["plants"]["Insert"];
-export type PlantUpdate = Database["public"]["Tables"]["plants"]["Update"];
-export type PlantSpeciesRow = Database["public"]["Tables"]["plant_species"]["Row"];
-export type CareScheduleRow = Database["public"]["Tables"]["care_schedules"]["Row"];
-export type CareLogRow = Database["public"]["Tables"]["care_logs"]["Row"];
-export type TaskInstanceRow = Database["public"]["Tables"]["task_instances"]["Row"];
-export type JournalEntryRow = Database["public"]["Tables"]["journal_entries"]["Row"];
-export type JournalEntryInsert = Database["public"]["Tables"]["journal_entries"]["Insert"];
-export type JournalEntryUpdate = Database["public"]["Tables"]["journal_entries"]["Update"];
-export type JournalPhotoRow = Database["public"]["Tables"]["journal_photos"]["Row"];
-export type JournalPhotoInsert = Database["public"]["Tables"]["journal_photos"]["Insert"];
-export type KnowledgeArticleRow = Database["public"]["Tables"]["knowledge_articles"]["Row"];
-export type KnowledgeArticleInsert = Database["public"]["Tables"]["knowledge_articles"]["Insert"];
-export type KnowledgeArticleUpdate = Database["public"]["Tables"]["knowledge_articles"]["Update"];
-export type DiagnosisEntryRow = Database["public"]["Tables"]["diagnosis_entries"]["Row"];
-export type DiagnosisEntryInsert = Database["public"]["Tables"]["diagnosis_entries"]["Insert"];
-export type DiagnosisEntryUpdate = Database["public"]["Tables"]["diagnosis_entries"]["Update"];
-export type IdentificationRow = Database["public"]["Tables"]["identifications"]["Row"];
-export type IdentificationInsert = Database["public"]["Tables"]["identifications"]["Insert"];
-export type IdentificationUpdate = Database["public"]["Tables"]["identifications"]["Update"];
+export type PlantRow = Database["public"]["Tables"]["opensprout_plants"]["Row"];
+export type PlantInsert = Database["public"]["Tables"]["opensprout_plants"]["Insert"];
+export type PlantUpdate = Database["public"]["Tables"]["opensprout_plants"]["Update"];
+export type PlantSpeciesRow = Database["public"]["Tables"]["opensprout_plant_species"]["Row"];
+export type CareScheduleRow = Database["public"]["Tables"]["opensprout_care_schedules"]["Row"];
+export type CareLogRow = Database["public"]["Tables"]["opensprout_care_logs"]["Row"];
+export type TaskInstanceRow = Database["public"]["Tables"]["opensprout_task_instances"]["Row"];
+export type JournalEntryRow = Database["public"]["Tables"]["opensprout_journal_entries"]["Row"];
+export type JournalEntryInsert = Database["public"]["Tables"]["opensprout_journal_entries"]["Insert"];
+export type JournalEntryUpdate = Database["public"]["Tables"]["opensprout_journal_entries"]["Update"];
+export type JournalPhotoRow = Database["public"]["Tables"]["opensprout_journal_photos"]["Row"];
+export type JournalPhotoInsert = Database["public"]["Tables"]["opensprout_journal_photos"]["Insert"];
+export type KnowledgeArticleRow = Database["public"]["Tables"]["opensprout_knowledge_articles"]["Row"];
+export type KnowledgeArticleInsert = Database["public"]["Tables"]["opensprout_knowledge_articles"]["Insert"];
+export type KnowledgeArticleUpdate = Database["public"]["Tables"]["opensprout_knowledge_articles"]["Update"];
+export type DiagnosisEntryRow = Database["public"]["Tables"]["opensprout_diagnosis_entries"]["Row"];
+export type DiagnosisEntryInsert = Database["public"]["Tables"]["opensprout_diagnosis_entries"]["Insert"];
+export type DiagnosisEntryUpdate = Database["public"]["Tables"]["opensprout_diagnosis_entries"]["Update"];
+export type IdentificationRow = Database["public"]["Tables"]["opensprout_identifications"]["Row"];
+export type IdentificationInsert = Database["public"]["Tables"]["opensprout_identifications"]["Insert"];
+export type IdentificationUpdate = Database["public"]["Tables"]["opensprout_identifications"]["Update"];
 
 export type Client = SupabaseClient<Database>;
diff --git a/supabase/migrations/20260628000000_prefix_opensprout_tables.sql b/supabase/migrations/20260628000000_prefix_opensprout_tables.sql
new file mode 100644
index 0000000..4a5c0b0
--- /dev/null
+++ b/supabase/migrations/20260628000000_prefix_opensprout_tables.sql
@@ -0,0 +1,63 @@
+-- Rename OpenSprout primary tables to opensprout_ prefix
+-- These share the project with OpenSend (which already uses opensend_ prefix)
+
+ALTER TABLE IF EXISTS public.profiles RENAME TO opensprout_profiles;
+ALTER TABLE IF EXISTS public.plants RENAME TO opensprout_plants;
+ALTER TABLE IF EXISTS public.care_schedules RENAME TO opensprout_care_schedules;
+ALTER TABLE IF EXISTS public.task_instances RENAME TO opensprout_task_instances;
+ALTER TABLE IF EXISTS public.care_logs RENAME TO opensprout_care_logs;
+ALTER TABLE IF EXISTS public.journal_entries RENAME TO opensprout_journal_entries;
+ALTER TABLE IF EXISTS public.journal_photos RENAME TO opensprout_journal_photos;
+ALTER TABLE IF EXISTS public.data_transfers RENAME TO opensprout_data_transfers;
+ALTER TABLE IF EXISTS public.sync_devices RENAME TO opensprout_sync_devices;
+ALTER TABLE IF EXISTS public.plant_species RENAME TO opensprout_plant_species;
+ALTER TABLE IF EXISTS public.knowledge_articles RENAME TO opensprout_knowledge_articles;
+ALTER TABLE IF EXISTS public.diagnosis_entries RENAME TO opensprout_diagnosis_entries;
+ALTER TABLE IF EXISTS public.identifications RENAME TO opensprout_identifications;
+ALTER TABLE IF EXISTS public.mcp_tokens RENAME TO opensprout_mcp_tokens;
+
+-- Update table comments
+COMMENT ON TABLE public.opensprout_profiles IS 'OpenSprout: user profiles';
+COMMENT ON TABLE public.opensprout_plants IS 'OpenSprout: user-owned plant records';
+COMMENT ON TABLE public.opensprout_care_schedules IS 'OpenSprout: recurring care rules';
+COMMENT ON TABLE public.opensprout_task_instances IS 'OpenSprout: generated care-task due-dates';
+COMMENT ON TABLE public.opensprout_care_logs IS 'OpenSprout: completed care actions';
+COMMENT ON TABLE public.opensprout_journal_entries IS 'OpenSprout: plant journal entries';
+COMMENT ON TABLE public.opensprout_journal_photos IS 'OpenSprout: photo metadata';
+COMMENT ON TABLE public.opensprout_data_transfers IS 'OpenSprout: export/import job tracking';
+COMMENT ON TABLE public.opensprout_sync_devices IS 'OpenSprout: offline-sync device registry';
+COMMENT ON TABLE public.opensprout_plant_species IS 'OpenSprout: species knowledge base';
+COMMENT ON TABLE public.opensprout_knowledge_articles IS 'OpenSprout: care/diagnosis articles';
+COMMENT ON TABLE public.opensprout_diagnosis_entries IS 'OpenSprout: symptom→cause→solution';
+COMMENT ON TABLE public.opensprout_identifications IS 'OpenSprout: AI identification results';
+COMMENT ON TABLE public.opensprout_mcp_tokens IS 'OpenSprout: MCP server auth tokens';
+
+-- Update the delete_account() function to use new table names
+-- Table RENAME does not update hardcoded table names in function bodies
+CREATE OR REPLACE FUNCTION public.delete_account()
+RETURNS void
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+DECLARE
+  v_user_id uuid;
+BEGIN
+  v_user_id := auth.uid();
+  IF v_user_id IS NULL THEN
+    RAISE EXCEPTION 'Not authenticated';
+  END IF;
+
+  DELETE FROM public.opensprout_journal_photos WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_journal_entries WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_care_logs WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_task_instances WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_care_schedules WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_identifications WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_mcp_tokens WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_sync_devices WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_data_transfers WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_plants WHERE user_id = v_user_id;
+  DELETE FROM public.opensprout_profiles WHERE id = v_user_id;
+END;
+$$;