36721243910
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develop: 67%

Ran 30 Sep 2026 01:24PM UTC

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Run time 1min

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Committed 30 Sep 2026 01:22PM UTC coverage: 66.737%. Remained the same

Build # 36721243910

Build Type

push

github

Committed by

web-flow

Commit Message

feat(stack): serve Studio's MCP server at /mcp on the API listener (CLI-2546) (#6898)

## Summary

With the stack backend, the local MCP server is not reachable at the API
URL: the shared API listener has no `/mcp` route, so MCP is only served
on Studio's own port under its internal `/api/mcp` path. The legacy
stack exposes it at `<API_URL>/mcp` (Kong maps `/mcp` to Studio's
`/api/mcp`), which is the documented local address,
`http://127.0.0.1:54321/mcp` with the default configuration.

- Studio's HTTP endpoint contributes a join-only `/mcp` → `/api/mcp`
route to the shared API listener. It never claims or asserts the API
port, is queued until a claiming endpoint binds, and is removed when
Studio's namespace closes or is released.
- The route is derived when Studio registers, so nothing is persisted
and existing stacks gain it on their next start. A request to `/mcp`
wakes a sleeping Studio.
- Exact-prefix requests now map to the upstream prefix itself instead of
gaining a trailing slash (`/mcp` → `/api/mcp`), matching how the legacy
gateway strips route paths.

A follow-up to #6894 will report `MCP_URL` as `<API_URL>/mcp`.

---------

Co-authored-by: Julien Goux <Julien@supabase.io>

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ID	Job ID	Ran	Files	Coverage
1	36721243910.1	30 Sep 2026 01:24PM UTC	79	66.74	GitHub Action Run

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