Files
coder/docs/ai-coder/agents
Cian Johnston 2a990ce758 feat: show friendly alert for missing agents-access role (#23831)
Replaces the generic red `ErrorAlert` ("Forbidden.") with a proactive
permission check and friendly info alert when a user lacks the
`agents-access` role.

- Add `createChat` permission check to `permissions.json` using
`owner_id: "me"`
- Handle `"me"` owner substitution in `renderPermissions` (SSR path)
- Pass `canCreateChat` from `useAuthenticated().permissions` into
`AgentCreateForm`
- Show `ChatAccessDeniedAlert` and disable input immediately (no need to
trigger a 403 first)
- Also catch 403 errors as a fallback in case permissions aren't yet
loaded
- Add `ForbiddenNoAgentsRole` Storybook story with `play` assertions
- Add `TestRenderPermissionsResolvesMe` Go test to pin the `"me"`
sentinel substitution

<details><summary>Implementation plan & decision log</summary>

- Uses the existing `permissions.json` + `checkAuthorization` system
rather than a separate API call
- `owner_id: "me"` is resolved to the actor's ID by both the auth-check
API endpoint and the SSR `renderPermissions` function
- Go test uses a real `rbac.StrictCachingAuthorizer` (not a mock) so it
verifies both the sentinel substitution and the RBAC role evaluation
end-to-end
- Alert follows the exact same `Alert` pattern as the 409 usage-limit
block
- Uses `severity="info"` and links to the getting-started docs Step 3
- Textarea is disabled proactively so the user never sees the scary
generic error

</details>

> 🤖 Created by a Coder Agent and will be reviewed by a human.
2026-03-31 17:26:58 +01:00
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