Add 13F.ai to your AI.

From each company's own help pages. Their rules change, and each guide links its source.

• Claude. Works on every Claude plan, Free included (a Free account can add one custom connector). On Team and Enterprise, an Owner adds it for the organization first, and each member then connects.
• ChatGPT. Install it from ChatGPT's plugins directory, where 13F.ai is listed for the United States. In a work or school workspace an administrator decides which plugins members can install. Where it can't be installed, adding it as a custom MCP server works with developer mode (ChatGPT Pro, Business, Enterprise and Edu; we also used it on the free plan in October 2026).
• Microsoft 365 Copilot (coming soon). Work or school accounts only. Each person needs a Microsoft 365 Copilot license (Microsoft lists federated connectors for the Copilot add-on and Microsoft 365 E7, not for Copilot Chat on its own), and an administrator turns the connector on. The free Copilot app with a personal Microsoft account isn't covered.
• Gemini. Google offers custom apps to people 18 or over in the US, in English, with a personal Google Account (not work or school) and Keep Activity on. You add the app on the web, and it then works in the Gemini mobile app. Google doesn't say which Gemini plans qualify.

Server address. https://13f.ai/api/mcp

Claude Code (Premium): one line, then type /mcp inside Claude Code to sign in.

claude mcp add --transport http 13f-ai https://13f.ai/api/mcp

Prefer an API key? API keys are part of Premium. Tools that can't sign in send one from your account page in an Authorization: Bearer header.

claude mcp add --transport http 13f-ai https://13f.ai/api/mcp --header "Authorization: Bearer <your key>"

Everything else is on the developers page. Developers →