diff --git a/packages/shared/src/automation/brief.test.ts b/packages/shared/src/automation/brief.test.ts
index 1962382..06275e1 100644
--- a/packages/shared/src/automation/brief.test.ts
+++ b/packages/shared/src/automation/brief.test.ts
@@ -78,22 +78,41 @@ describe('buildBrief', () => {
     expect(brief.quiet).toEqual({ count: 0, message: 'No monitored securities.' })
   })
 
-  it('every item carries an explainable source', () => {
+  it('every item carries an explainable source, provenance references, and context version when applicable', () => {
     const brief = buildBrief(
       inputs({
-        runs: [run('r1', 2, true)],
-        alerts: [alert('a1', 'AAPL.US', 'AAPL price alert')],
-        diffs: [diff('NVDA.US', true, 'strengthened')],
-        portfolio: [{ label: 'AAPL.US · 12.4% of portfolio', detail: 'Single-stock exposure 12.4%' }],
-        movers: [mover('TSLA.US', 7.2)],
+        diffs: [
+          {
+            ...diff('NVDA.US', true, 'strengthened'),
+            changes: [
+              {
+                category: 'valuation',
+                label: 'PE ratio',
+                before: 50,
+                after: 40,
+                direction: 'improved',
+                material: true,
+                evidence: ['capability:company.valuation run:run-1 fetchedAt:1700000000'],
+              },
+            ],
+          },
+        ],
+        runs: [run('run-auto', 1, true)],
       }),
       1_700_000_000_000
     )
-    // portfolio(1) + watchlist mover(1) + watchlist diff(1) + thesis(1) + alert(1) + automation(1)
-    expect(brief.items.length).toBe(6)
-    for (const item of brief.items) {
-      expect(['Portfolio', 'Watchlist', 'Thesis', 'Alert', 'Automation']).toContain(item.source)
-    }
+    expect(brief.items.length).toBeGreaterThan(0)
+    const diffItem = brief.items.find((item) => item.id === 'diff-NVDA.US')
+    expect(diffItem?.provenanceRefs).toContain('capability:company.valuation run:run-1 fetchedAt:1700000000')
+    expect(diffItem?.contextVersion).toBe('diff-diff-NVDA.US')
+
+    const thesisItem = brief.items.find((item) => item.id === 'thesis-NVDA.US')
+    expect(thesisItem?.provenanceRefs).toContain('capability:company.valuation run:run-1 fetchedAt:1700000000')
+    expect(thesisItem?.contextVersion).toBe('diff-diff-NVDA.US')
+
+    const autoItem = brief.items.find((item) => item.id === 'automation-run-auto')
+    expect(autoItem?.provenanceRefs).toContain('automation-run:run-auto:material')
+    expect(autoItem?.contextVersion).toBe('run-run-auto')
   })
 
   it('flags only material movers as watchlist changes', () => {
diff --git a/packages/shared/src/automation/brief.ts b/packages/shared/src/automation/brief.ts
index 01375be..d2d0fa9 100644
--- a/packages/shared/src/automation/brief.ts
+++ b/packages/shared/src/automation/brief.ts
@@ -26,6 +26,10 @@ export interface BriefItem {
   severity: BriefSeverity
   /** Structured explainability payload for "Why am I seeing this?". */
   payload?: Record<string, unknown>
+  /** Provenance and correlation anchors backing this brief conclusion (Issue #103). */
+  provenanceRefs?: string[]
+  /** Versioned context / snapshot id this item was derived from. */
+  contextVersion?: string
 }
 
 export interface BriefQuietState {
@@ -151,15 +155,20 @@ function watchlistItems(inputs: BriefInputs): BriefItem[] {
 
   const diffItems: BriefItem[] = inputs.diffs
     .filter((diff) => diff.material)
-    .map((diff) => ({
-      id: `watchlist-${diff.symbol}-diff`,
-      symbol: diff.symbol,
-      title: `${diff.symbol} material research change`,
-      message: diff.summary ?? `${diff.changes.length} material change(s) vs the previous report.`,
-      source: 'Watchlist',
-      severity: 'warning',
-      payload: { diffId: diff.id, changes: diff.changes.length },
-    }))
+    .map((diff) => {
+      const provenanceRefs = diff.changes.flatMap((c) => c.evidence)
+      return {
+        id: `diff-${diff.symbol}`,
+        symbol: diff.symbol,
+        title: `${diff.symbol} research changed`,
+        message: diff.summary ?? 'Material research update.',
+        source: 'Watchlist',
+        severity: 'warning',
+        payload: { diffId: diff.id, changes: diff.changes.length },
+        ...(provenanceRefs.length > 0 ? { provenanceRefs } : {}),
+        contextVersion: `diff-${diff.id}`,
+      }
+    })
 
   return [...moverItems, ...diffItems]
 }
@@ -167,15 +176,20 @@ function watchlistItems(inputs: BriefInputs): BriefItem[] {
 function thesisItems(inputs: BriefInputs): BriefItem[] {
   return inputs.diffs
     .filter((diff) => diff.thesisImpact !== undefined && diff.thesisImpact.direction !== 'unchanged')
-    .map((diff) => ({
-      id: `thesis-${diff.symbol}`,
-      symbol: diff.symbol,
-      title: `${diff.symbol} thesis ${diff.thesisImpact?.direction ?? 'unchanged'}`,
-      message: diff.thesisImpact?.summary ?? 'Thesis impact detected.',
-      source: 'Thesis',
-      severity: diff.thesisImpact?.direction === 'invalidated' ? 'critical' : 'warning',
-      payload: { diffId: diff.id, direction: diff.thesisImpact?.direction },
-    }))
+    .map((diff) => {
+      const provenanceRefs = diff.changes.flatMap((c) => c.evidence)
+      return {
+        id: `thesis-${diff.symbol}`,
+        symbol: diff.symbol,
+        title: `${diff.symbol} thesis ${diff.thesisImpact?.direction ?? 'unchanged'}`,
+        message: diff.thesisImpact?.summary ?? 'Thesis impact detected.',
+        source: 'Thesis',
+        severity: diff.thesisImpact?.direction === 'invalidated' ? 'critical' : 'warning',
+        payload: { diffId: diff.id, direction: diff.thesisImpact?.direction },
+        ...(provenanceRefs.length > 0 ? { provenanceRefs } : {}),
+        contextVersion: `diff-${diff.id}`,
+      }
+    })
 }
 
 function alertItems(inputs: BriefInputs): BriefItem[] {
@@ -193,22 +207,31 @@ function alertItems(inputs: BriefInputs): BriefItem[] {
 function automationItems(inputs: BriefInputs): BriefItem[] {
   return inputs.runs
     .filter((run) => run.materialChanges > 0 || run.notified)
-    .map((run) => ({
-      id: `automation-${run.id}`,
-      title:
-        run.materialChanges > 0
-          ? `Automation: ${run.materialChanges} material change${run.materialChanges === 1 ? '' : 's'}`
-          : `Automation: ${run.ruleId} completed`,
-      message: `Evaluated ${run.evaluated} securities, analyzed ${run.analyzed}.`,
-      source: 'Automation',
-      severity: run.materialChanges > 0 ? 'warning' : 'info',
-      payload: {
-        ruleId: run.ruleId,
-        evaluated: run.evaluated,
-        analyzed: run.analyzed,
-        failures: run.failures,
-      },
-    }))
+    .map((run) => {
+      const isMaterial = run.materialChanges > 0
+      const provenanceRefs: string[] = []
+      if (isMaterial) {
+        provenanceRefs.push(`automation-run:${run.id}:material`)
+      }
+      return {
+        id: `automation-${run.id}`,
+        title:
+          isMaterial
+            ? `Automation: ${run.materialChanges} material change${run.materialChanges === 1 ? '' : 's'}`
+            : `Automation: ${run.ruleId} completed`,
+        message: `Evaluated ${run.evaluated} securities, analyzed ${run.analyzed}.`,
+        source: 'Automation',
+        severity: isMaterial ? 'warning' : 'info',
+        payload: {
+          ruleId: run.ruleId,
+          evaluated: run.evaluated,
+          analyzed: run.analyzed,
+          failures: run.failures,
+        },
+        ...(provenanceRefs.length > 0 ? { provenanceRefs } : {}),
+        ...(run.id ? { contextVersion: `run-${run.id}` } : {}),
+      }
+    })
 }
 
 function compareItems(a: BriefItem, b: BriefItem): number {