Jetty.Io MCP Server

Work on dataset metadata with MLCommons Croissant validation and creation.

Local serverstdioPython

What is the Jetty.Io MCP server?

If you want an AI assistant working directly with Jetty.Io, the jetty.io mcp server is the bridge. Work on dataset metadata with MLCommons Croissant validation and creation.

What Jetty.Io does

A Python-based service for managing ML model provenance and lineage, built with FastAPI and SQLAlchemy. Support for Croissant metadata validation.

Key capabilities

  • Dataset management with collection support
  • Entity tracking
  • Activity logging
  • Provenance relationships tracking
  • RESTful API endpoints

Tools it exposes

Once connected, the assistant can call these 5 tools directly:

  • ReDochttp://bakery.localhost/redoc
  • ADMIN_AUTH_TOKEN — A fixed value that is the token a user would need to provide to have admin permissions (unrestricted access to all resources)
  • JWT_VERIFICATION_STRATEGY — The URL of a trusted JWT token issuer, such as Clerk. We have a development instance of Clerk running that you can use. You can sign up for an account via
  • Prerequisites — The Prerequisites tool exposed by this server
  • Authentication — The Bakery is setup to authenticate requests with two methods: JWT Tokens and a "Master Admin Token". Both are configured in the ENV variables (.env file)

Installing the jetty.io mcp server

The server is distributed via PyPI as poetry, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.

Configuration

Before the server will start you need to supply 2 environment variables: DATABASE_URL, ADMIN_AUTH_TOKEN. Keep credentials in your client's env block or a secrets manager rather than committing them.

Requirements

  • Python 3.12+ - uv (Python package manager)

Where it fits

Developer-tool servers are usually the first ones people connect, because they turn "help me with this code" into an assistant that can actually read the repo and act on it. Jetty.Io sits in that group, and the shape of its toolset — ReDoc, ADMIN_AUTH_TOKEN, JWT_VERIFICATION_STRATEGY among others — tells you what it is really for. Worth comparing against the other developer tools servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.

Practical notes

  • This server runs locally, so it operates with whatever access your machine and its credentials already have. Scope that deliberately rather than by default.
  • It will not start until its required credentials are present, so set those before wondering why the tools never appear.
  • Written in Python.
  • MCP clients ask for confirmation before each tool call by default. Keep that on while you learn what the jetty.io mcp server actually does with your data.
  • Every entry in this directory is reviewed by hand before it goes live, and details are checked against the project's own documentation.

Available tools

ToolWhat it does
ReDochttp://bakery.localhost/redoc
ADMIN_AUTH_TOKENA fixed value that is the token a user would need to provide to have admin permissions (unrestricted access to all resources).
JWT_VERIFICATION_STRATEGYThe URL of a trusted JWT token issuer, such as Clerk. We have a development instance of Clerk running that you can use. You can sign up for an account via flows.jetty.io (alpha), or contact dev@jetty.io for access to Jet
PrerequisitesThe Prerequisites tool exposed by this server.
AuthenticationThe Bakery is setup to authenticate requests with two methods: JWT Tokens and a "Master Admin Token". Both are configured in the ENV variables (.env file). Both JWT tokens and the Master Admin Token should be provided as

How to install the Jetty.Io MCP server

{
  "mcpServers": {
    "mlcbakery": {
      "command": "uvx",
      "args": ["poetry"],
      "env": {
        "DATABASE_URL": "your-value",
        "ADMIN_AUTH_TOKEN": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • Python 3.12+ - uv (Python package manager)
VariableDescriptionRequired
DATABASE_URLEndpoint or connection string the server talks to.Yes
ADMIN_AUTH_TOKENCredential the server authenticates with.Yes

Example prompts to try

  • Use Jetty.Io to ReDoc.
  • Use Jetty.Io to ADMIN AUTH TOKEN.
  • Use Jetty.Io to JWT VERIFICATION STRATEGY.

Frequently asked questions

It connects Jetty.Io to MCP-compatible AI assistants such as Claude and Cursor, exposing 5 tools (ReDoc, ADMIN_AUTH_TOKEN, JWT_VERIFICATION_STRATEGY, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Jetty.Io directly.