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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? 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>
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 | supabase_auth | supabase_realtime | supabase_storage | supabase_functions |
| 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>
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- List of translations