Other apps

Mr. Market works with any app that supports remote MCP servers over Streamable HTTP with OAuth sign-in. The steps on this site for Claude, Claude Code, ChatGPT, Codex, Cursor and VS Code are the tested ones; the configurations below follow each app's documented format.


Server address	`https://mrmarket.fyi/mcp`
Transport	Streamable HTTP
Auth	OAuth 2.1 with PKCE and dynamic client registration
Protected resource metadata	`https://mrmarket.fyi/.well-known/oauth-protected-resource/mcp`
Authorization server metadata	`https://mrmarket.fyi/.well-known/oauth-authorization-server`

There are no API keys for members: every app signs in through the browser.

Windsurf#

In ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "mr-market": {
      "serverUrl": "https://mrmarket.fyi/mcp"
    }
  }
}

Zed#

In Zed's settings.json (the root key is context_servers):

{
  "context_servers": {
    "mr-market": {
      "url": "https://mrmarket.fyi/mcp"
    }
  }
}

Gemini CLI#

gemini mcp add --transport http mr-market https://mrmarket.fyi/mcp

Then run /mcp auth mr-market inside Gemini CLI to sign in.

Apps that only run local servers#

Some apps can only start local (stdio) servers. Bridge them with mcp-remote, which handles the browser sign-in:

{
  "mcpServers": {
    "mr-market": {
      "command": "npx",
      "args": ["-y", "mcp-remote@latest", "https://mrmarket.fyi/mcp"]
    }
  }
}

Use mcp-remote 0.1.16 or later; earlier versions had a security flaw (CVE-2025-6514).

Agent frameworks#

Frameworks such as the OpenAI Agents SDK, LangChain or the Vercel AI SDK can connect to https://mrmarket.fyi/mcp as a remote MCP server, but they need an OAuth flow to get a sign-in. Mr. Market doesn't issue API keys to members during the beta, so these are best driven from an app above.