Trillion MCP MCP server

Trillion provides an MCP server that allows AI agents to access Trillion's decision-making framework. It enables agents to walk through a set of questions to identify key factors and recommend choices, with runs saved as documents on paid plans. The server facilitates integration with AI apps like Grok and Claude, allowing users to delegate decision support tasks directly within their AI workflows.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

OAuth sign-inEndpoint checked 2026-10-05Operated by Trillion

MCP endpoint (Streamable HTTP)

https://app.gettrillion.ai/mcp

Vendor documentation

What you can do with it

Help AI decide what to focus on this week
Walk through questions to recommend a choice
Save decision runs as shareable documents
Connect Trillion to AI apps like Grok or Claude

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 trillion-mcp https://app.gettrillion.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 trillion-mcp --url https://app.gettrillion.ai/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "trillion-mcp": {
      "url": "https://app.gettrillion.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": {
    "trillion-mcp": {
      "type": "streamableHttp",
      "url": "https://app.gettrillion.ai/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "trillion-mcp": {
      "type": "http",
      "url": "https://app.gettrillion.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 trillion-mcp https://app.gettrillion.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": {
    "trillion-mcp": {
      "url": "https://app.gettrillion.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": {
    "trillion-mcp": {
      "serverUrl": "https://app.gettrillion.ai/mcp"
    }
  }
}

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