diff --git a/plugin/skills/sandboxes/SKILL.md b/plugin/skills/sandboxes/SKILL.md
index 8e1f9d3..2823ce6 100644
--- a/plugin/skills/sandboxes/SKILL.md
+++ b/plugin/skills/sandboxes/SKILL.md
@@ -1,26 +1,56 @@
 ---
 name: sandboxes
 description: |
-  Azure Container Apps sandboxes let you run untrusted code, agents,
-  MCP servers, and web apps in hardware-isolated microVMs.
-  Supports snapshot/resume, scale-to-zero, deny-default egress, and is
-  managed with `aca` CLI using `az login`.
+  Azure Container Apps Sandboxes (ACA Sandboxes) let a developer run
+  untrusted code, agents, MCP servers, and web apps in their OWN
+  hardware-isolated microVM. Long-lived (hours-to-days), developer-owned,
+  programmatically controlled via the `aca` CLI (which uses
+  `aca auth login`, delegating to `az login` under the hood).
 
   Use when the user wants to: create/manage sandbox groups and
   sandboxes; exec or open a shell; read/write files; expose ports;
   snapshot, stop, resume, commit to disk; mount volumes; tighten
   egress; manage secrets, identity, labels; apply YAML; or run
-  scenarios like web apps, coding agents, code interpreter, swarms,
+  scenarios like web apps, coding agents, agent swarms,
   computer-use, or MCP hosting.
 
+  **Do NOT activate for:**
+  - **Container Apps Dynamic Sessions** (the LLM "code interpreter"
+    product — ephemeral seconds-long sessions, Hyper-V isolation, used
+    for executing untrusted code GENERATED BY an LLM tool/agent at
+    runtime). Different product in the same family. If the user mentions
+    "code interpreter", "execute LLM-generated code", "untrusted code
+    from my agent", "session pool", "ephemeral seconds", point them at
+    Container Apps Dynamic Sessions instead.
+  - Kubernetes / AKS "sandbox" namespaces or pods.
+  - Cosmos DB "sandbox" containers / databases.
+  - Windows Sandbox, Linux namespace sandboxes, Salesforce Sandbox,
+    Playwright sandbox, browser sandboxes.
+  - Generic "VM in Azure" without ACA / microVM / dev-loop context
+    (could be Azure VM, Dev Box, Codespaces).
+
+  **When the prompt is ambiguous, ASK ONE clarifying question before
+  provisioning anything.** Specifically:
+  - Single-word prompts ("sandbox", "microVM", "VM") — ask which product
+    family (ACA Sandboxes, Dynamic Sessions, Azure VM, Dev Box, …).
+  - "Ephemeral VM" / "I need a VM for testing" — ask expected lifetime
+    (seconds → Dynamic Sessions; hours-to-days → ACA Sandboxes; long-lived
+    workstation → Dev Box / Azure VM).
+  - "Set up a sandbox for my coding agent" / "What should I use to run
+    my AI agent?" — ask whether (a) the agent needs its OWN dev
+    environment (ACA Sandboxes is the strong fit) or (b) the agent needs
+    to execute end-user / LLM-generated code (Dynamic Sessions).
+
   If `aca` is missing, read `references/install.md` first. `aca`
   ships ONLY via GitHub Releases (microsoft/azure-container-apps);
   not npm/pip/winget/brew. Don't guess.
 
-  Triggers: install aca, install aca cli, setup aca, aca doctor, aca
-  login, command not found: aca, create sandbox, sandbox group, aca
-  cli, aca sandbox, exec in sandbox, microVM, code interpreter, agent
-  swarm, host mcp.
+  Triggers (must have ACA / microVM / dev-loop context — bare keywords
+  alone are NOT enough; ask first per above): install aca, install aca
+  cli, setup aca, aca doctor, aca auth login, aca login, command not
+  found: aca, create ACA sandbox, sandbox group, aca cli, aca sandbox,
+  exec in ACA sandbox, ACA microVM, host mcp in sandbox, personal agent
+  sandbox.
 ---
 
 # Sandboxes
@@ -38,7 +68,8 @@ folder.
 - **Startup:** sub-second from a prewarmed pool; suspend/resume preserves
   full memory + disk.
 - **Scale:** zero to thousands; pay nothing when idle.
-- **Auth:** `aca` delegates to `az login` — same identity, same MFA.
+- **Auth:** `aca auth login` — delegates to `az login` under the hood,
+  same identity, same MFA.
 
 > ⚠️ **The `az` CLI has no sandbox commands.** Sandbox groups and
 > sandboxes are managed by `aca` — **not** by `az containerapp …`. The
@@ -46,6 +77,21 @@ folder.
 > do not touch sandboxes. If you see `az containerapp sandbox …` in a
 > snippet, it's wrong.
 
+## ACA Sandboxes vs. adjacent products (don't confuse them)
+
+| | **ACA Sandboxes** | **Container Apps Dynamic Sessions** | **Regular Container App** |
+|---|---|---|---|
+| Audience | Developer / agent owner | LLM tool runtime | Production HTTP service |
+| Lifetime | Hours → days, snapshot/resume | Seconds → minutes, ephemeral | Indefinite, auto-scale 0→N |
+| Isolation | microVM (hardware) | Hyper-V (hardware, per-session) | Shared container runtime |
+| Managed via | `aca` CLI, YAML manifests | Dynamic Sessions API / SDK | `az containerapp`, Bicep |
+| Use it for | Personal dev env, MCP host, agent dev loop, swarms | LLM-generated untrusted code, code interpreter as a service | Web apps, APIs, jobs |
+| Portal | `https://containerapps.azure.com/sandbox-groups` | Azure portal `Microsoft.App/sessionPools` | Azure portal `Microsoft.App/containerApps` |
+
+If the user's intent matches the middle column, **stop and point them
+at Container Apps Dynamic Sessions** — don't try to make ACA Sandboxes
+fit.
+
 ## Get started
 
 | | Where |
@@ -55,6 +101,7 @@ folder.
 | **Quick start** | [references/quickstart.md](references/quickstart.md) |
 | **Full CLI reference** | [references/reference.md](references/reference.md) |
 | **Scenario recipes** | [references/scenarios.md](references/scenarios.md) |
+| **Portal** | [`https://containerapps.azure.com/sandbox-groups`](https://containerapps.azure.com/sandbox-groups) — exploration, visual inspection of groups/sandboxes/ports/logs. The CLI is primary; the portal complements it for one-off ops. |
 
 After install, always confirm setup with `aca doctor` — it resolves
 subscription / RG / group / region / role and tells you which check
@@ -98,8 +145,10 @@ in [references/scenarios.md](references/scenarios.md).
 - **Web apps** — start a server, expose a port anonymously, hit the URL.
 - **Coding agents in a sandbox** — run Copilot CLI / Claude Code / Codex
   with deny-default egress and (optionally) token-swap rules.
-- **Code interpreter** — LLM generates → exec → observe → iterate;
-  snapshot between turns for rewind.
+- **Developer code-interpreter loop** — your OWN agent generates code,
+  execs it inside YOUR sandbox, snapshots between turns for rewind.
+  For LLM tools / managed code-interpreter-as-a-service used by end-user
+  agents at runtime, use **Container Apps Dynamic Sessions** instead.
 - **Swarms** — orchestrator fans work across N worker sandboxes by
   label selector.
 - **Sandbox inception** — orchestrator runs *inside* a sandbox and uses