One URL connects every AI you use.
MythOS speaks MCP — the open protocol Claude, ChatGPT, and Cursor use to reach outside tools. Add the server once, sign in, and your AI can search, read, and write your library mid-conversation.
Your MCP server URL
Every client below connects to the same endpoint:
https://mythos.one/api/mcp
Authentication is a normal sign-in — when your client asks, log in with your MythOS account. No keys to copy.
Claude
- Open Settings → Connectors (on claude.ai or in Claude Desktop).
- Click Add custom connector and paste
https://mythos.one/api/mcp. - Click Connect and sign in with your MythOS account.
Then ask Claude to “search my MythOS for…” or “write that up as a memo” — it files the result in your library.
Claude Code
claude mcp add --transport http mythos https://mythos.one/api/mcp
Run /mcp inside Claude Code to authenticate the first time. Your agent can now read context from your library before it works and write reports back when it finishes.
ChatGPT
- In ChatGPT, open Settings → Connectors and enable Developer mode (Plus/Pro/Business plans).
- Choose Add connector and paste
https://mythos.one/api/mcp. - Sign in with your MythOS account when prompted.
Cursor
- Open Cursor Settings → MCP and choose Add new MCP server.
- Set the type to HTTP and the URL to
https://mythos.one/api/mcp. - Complete the sign-in window that opens.
Any agent, any script
Clients without MCP support can use the agent API directly. Generate a personal API key under Settings → API and send it as an x-mythos-key header — see Integrations for endpoints. Agents that discover on their own can start from /llms.txt.
What a connected AI can do
- Search your memos by title or meaning, and read any memo in full.
- Create and update memos, daily journal entries, and tasks.
- Chat with your library — answers grounded in your own writing.
- Browse your tags, templates, and communities.
Access follows your permissions: private memos stay private to you and the agents you sign in.