Files
531431cd77 docs: document MCP cost confirmation via elicitations (#50017)
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

Docs update for the MCP cost confirmation launch
([AI-1161](https://linear.app/supabase/issue/AI-1161/write-the-docs)).

## What is the current behavior?

The MCP server guide lists `get_cost` / `confirm_cost` but doesn't
describe the elicitation-based cost confirmation flow that
`@supabase/mcp-server-supabase` 0.12.0 introduces for `create_project`
and `create_branch` on form-capable clients.

## What is the new behavior?

- New **Cost confirmation** section in the MCP server guide: how the
elicitation flow works (accept / decline / expiry / rate-change
outcomes, all side-effect-free except accept), the zero-cost skip,
client support, and how to tell which cost flow a connection uses.
- New troubleshooting entry: "Cost confirmations do not appear in your
MCP client".
- Three `supa-mdx-lint` dictionary additions the new prose needs
(`elicitation(s)`, `dialogs`, `pauses`).

## Additional context

**Draft — hold until launch.** Merge gates before publishing:

1. The feature is enabled for hosted connections.
2. The client support table is re-verified against launch verification
results (there's a matching `{/* ... */}` reviewer note above the
table). Client support moves quickly; the table reflects verification as
of 2026-09-04.

Needs review:

- **Rate-change behavior follows the shipped code, not the spec docs**:
on any change to the computed cost between confirmation and creation
(including a decrease), the server reissues a fresh confirmation rather
than proceeding (`account-tools.ts` redemption path in supabase/mcp).
Flagging in case the intent was lower-or-equal proceeds.
- No exact confirmation expiry is stated because the TTL is
deployment-configured (`ttlSeconds`).
- Wording deliberately says "client-mediated" style confirmation and
avoids claiming a person approved each action, since clients can answer
elicitations via hooks.

Test plan: `supa-mdx-lint` clean on both files; Prettier (repo config)
clean. No runnable snippets, so no sandbox verification needed. Vercel
preview link will appear below.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added advanced options to hosted MCP connections for skipping selected
cost or destructive-SQL confirmations when supported. Available options
depend on connection scope, enabled features, and read-only settings.
* The configuration panel explains when skip selections are unavailable
or ignored by certain client configurations.

* **Documentation**
* Added guidance on cost and SQL confirmation prompts, Edge Function
secret entry, and troubleshooting missing prompts or unavailable secret
collection. This includes client requirements, fallback behavior, and
relevant security considerations.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: Barry Roodt <barry.roodt@supabase.io>
2026-10-02 08:58:34 +02:00
..
2026-07-01 12:59:00 +02:00

Reference Docs

Supabase Reference Docs

Maintainers

If you are a maintainer of any tools in the Supabase ecosystem, you can use this site to provide documentation for the tools & libraries that you maintain.

DocSpec

We use documentation specifications which can be used to generate human-readable docs.

  • OpenAPI: for documenting API endpoints.
  • SDKSpec (custom to Supabase): for SDKs and client libraries.
  • ConfigSpec (custom to Supabase): for configuration options.
  • CLISpec (custom to Supabase): for CLI commands and usage.

The benefit of using custom specifications is that we can generate many other types from a strict schema (eg, HTML and manpages). It also means that we can switch to any documentation system we want. On this site we use Next.js, but on Supabase's official website, we use a custom React site and expose only a subset of the available API for each tool.

Contributing

To contribute to docs, see the style guide for how to write a page, and the developers' guide and contributing guide for repo mechanics. If you write with an AI coding agent, use the /write-the-docs skill to draft and /edit-the-docs to revise an existing page.