Catalyst MCP MCP server

An official read-only MCP server for the Catalyst evidence graph, allowing AI assistants to query curated findings on compounds, supplements, and outcomes. It provides evidence strength, study design, verbatim quotes, and paper citations to support research and simulation in human biology without requiring user authentication.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Catalyst

MCP endpoint (Streamable HTTP)

https://catalystproject.ai/mcp

Vendor documentation

What you can do with it

Query evidence strength for specific supplements or drugs
Search the knowledge graph by compound or outcome name
Retrieve curated study findings with verbatim quotes
Get detailed explanations of evidence levels for claims

Tools advertised by the last live check:

find_evidence
search_nodes
get_findings
get_finding
get_relations
get_reactions
reach

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http catalyst-mcp https://catalystproject.ai/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add catalyst-mcp --url https://catalystproject.ai/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable catalyst-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "catalyst-mcp": {
      "url": "https://catalystproject.ai/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "catalyst-mcp": {
      "type": "streamableHttp",
      "url": "https://catalystproject.ai/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start catalyst-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "catalyst-mcp": {
      "type": "http",
      "url": "https://catalystproject.ai/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http catalyst-mcp https://catalystproject.ai/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "catalyst-mcp": {
      "url": "https://catalystproject.ai/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "catalyst-mcp": {
      "serverUrl": "https://catalystproject.ai/mcp"
    }
  }
}

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