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## 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? Feature — a new UI Library block. Bottom of a two-PR stack; #49579 builds on it. ## What is the new behavior? Adds an `mcp-server` block: a Supabase Edge Function that exposes MCP tools scoped to the signed-in user. It is backend-only, so every file has an explicit target and no `components.json` is needed. - `withSupabase({ auth: 'user' })` verifies the access token and gives each tool an RLS-scoped client. Both product session tokens and OAuth tokens work; only the latter carry `client_id`. - `withOAuthProtectedResource` serves RFC 9728 metadata and adds a `WWW-Authenticate` challenge to `401`s, so external MCP clients can discover the authorization server. - Tools are composed in `tools/index.ts`. One is included, `whoami`, which shows the caller's identity and OAuth client. Docs at `/library/docs/headless/mcp-server`, under a new MCP group in the sidebar. `BlockItem` gained a `showOpenInV0` flag (v0 cannot take Deno functions), and the file-tree viewer now picks a language per file instead of always TypeScript. ## To test 1. `npx shadcn@latest add http://localhost:3004/library/r/mcp-server.json` into a Supabase project or empty directory. 2. Add `[functions.mcp-server] verify_jwt = false` to `supabase/config.toml`, then: ```bash supabase start supabase functions serve mcp-server --env-file supabase/functions/.env ``` 3. **Unauthenticated:** `curl -i localhost:54321/functions/v1/mcp-server` returns `401` with a `WWW-Authenticate` header, and `/functions/v1/mcp-server/oauth-protected-resource` returns the metadata document. 4. **Product session:** sign up a user, then call the endpoint with `Authorization: Bearer <their access token>`. `tools/list` shows `whoami`; calling it returns that user's id and `client_id: null`. 5. **External client:** enable `[auth.oauth_server]` with `allow_dynamic_registration = true`, install the OAuth Consent block, point an MCP client (Claude Code, Codex) at the function URL, approve the consent screen, and call `whoami` again. `client_id` is now populated. 6. Confirm RLS holds: add a table with a user-scoped policy and a tool that reads it, then check a second user cannot see the first user's rows. 7. Docs page renders at `/library/docs/headless/mcp-server`, and `deno.json` / `.env.example` in the folder tree highlight as JSON and bash rather than TypeScript. <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit - **New Features** - Added an installable Supabase MCP Server block with user-scoped authentication and a read-only identity tool. - Added MCP Blocks to documentation navigation and setup guidance. - Code blocks now automatically detect syntax highlighting from file names. - Added an option to hide the “Open in v0” button. - **Documentation** - Expanded MCP Server guidance covering installation, configuration, validation, deployment, OAuth, and security. <!-- end of auto-generated comment: release notes by coderabbit.ai --> --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Saxon Fletcher <SaxonF@users.noreply.github.com>
Supabase
Supabase is the Postgres development platform. We're building the features of Firebase using enterprise-grade open source tools.
- Hosted Postgres Database. Docs
- Authentication and Authorization. Docs
- Auto-generated APIs.
- Functions.
- File Storage. Docs
- AI + Vector/Embeddings Toolkit. Docs
- Dashboard
Watch "releases" of this repo to get notified of major updates.
Documentation
For full documentation, visit supabase.com/docs
To see how to Contribute, visit Getting Started
Community & Support
- Community Forum. Best for: help with building, discussion about database best practices.
- GitHub Issues. Best for: bugs and errors you encounter using Supabase.
- Email Support. Best for: problems with your database or infrastructure.
- Discord. Best for: sharing your applications and hanging out with the community.
How it works
Supabase is a combination of open source tools. We’re building the features of Firebase using enterprise-grade, open source products. If the tools and communities exist, with an MIT, Apache 2, or equivalent open license, we will use and support that tool. If the tool doesn't exist, we build and open source it ourselves. Supabase is not a 1-to-1 mapping of Firebase. Our aim is to give developers a Firebase-like developer experience using open source tools.
Architecture
Supabase is a hosted platform. You can sign up and start using Supabase without installing anything. You can also self-host and develop locally.
- Postgres is an object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
- Realtime is an Elixir server that allows you to listen to PostgreSQL inserts, updates, and deletes using websockets. Realtime polls Postgres' built-in replication functionality for database changes, converts changes to JSON, then broadcasts the JSON over websockets to authorized clients.
- PostgREST is a web server that turns your PostgreSQL database directly into a RESTful API.
- GoTrue is a JWT-based authentication API that simplifies user sign-ups, logins, and session management in your applications.
- Storage a RESTful API for managing files in S3, with Postgres handling permissions.
- pg_graphql a PostgreSQL extension that exposes a GraphQL API.
- postgres-meta is a RESTful API for managing your Postgres, allowing you to fetch tables, add roles, and run queries, etc.
- Envoy is a cloud-native, high-performance edge and service proxy.
Client libraries
Our approach for client libraries is modular. Each sub-library is a standalone implementation for a single external system. This is one of the ways we support existing tools.
| Language | Client | Feature-Clients (bundled in Supabase client) | ||||
|---|---|---|---|---|---|---|
| Supabase | PostgREST | GoTrue | Realtime | Storage | Functions | |
| ⚡️ Official ⚡️ | ||||||
| JavaScript (TypeScript) | supabase-js | postgrest-js | auth-js | realtime-js | storage-js | functions-js |
| Flutter | supabase-flutter | postgrest-dart | gotrue-dart | realtime-dart | storage-dart | functions-dart |
| Swift | supabase-swift | postgrest-swift | auth-swift | realtime-swift | storage-swift | functions-swift |
| Python | supabase-py | postgrest-py | gotrue-py | realtime-py | storage-py | functions-py |
| 💚 Community 💚 | ||||||
| C# | supabase-csharp | postgrest-csharp | gotrue-csharp | realtime-csharp | storage-csharp | functions-csharp |
| Go | - | postgrest-go | gotrue-go | - | storage-go | functions-go |
| Java | - | - | gotrue-java | - | storage-java | - |
| Kotlin | supabase-kt | postgrest-kt | auth-kt | realtime-kt | storage-kt | functions-kt |
| Ruby | supabase-rb | postgrest-rb | - | - | - | - |
| Rust | - | postgrest-rs | - | - | - | - |
| Godot Engine (GDScript) | supabase-gdscript | - | - | - | - | - |
Badges
[](https://supabase.com)
<a href="https://supabase.com">
<img
width="168"
height="30"
src="https://supabase.com/badge-made-with-supabase.svg"
alt="Made with Supabase"
/>
</a>
[](https://supabase.com)
<a href="https://supabase.com">
<img
width="168"
height="30"
src="https://supabase.com/badge-made-with-supabase-dark.svg"
alt="Made with Supabase"
/>
</a>
Translations
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- List of translations