Connect Warp to thirds.ai

Use Warp Agent to build templates and create PDFs or images. Create an API key on the API keys page first. Each successful PDF or static image costs one credit.

Install the server

Set THIRDS_API_KEY in the environment that starts Warp. Open Settings → Agents → MCP servers, click + Add, and paste this Streamable HTTP server:

{
  "mcpServers": {
    "thirds": {
      "url": "https://thirds.ai/mcp",
      "headers": {
        "Authorization": "Bearer ${THIRDS_API_KEY}"
      }
    }
  }
}

You can save the same JSON in ~/.warp/.mcp.json for every session, or in .warp/.mcp.json for one project. Warp supports Streamable HTTP, custom headers, and ${VAR} expansion. See Warp's MCP guide. Keep the key out of the file and source control.

Check the connection

Start thirds on the MCP servers page. Ask Warp Agent to list the thirds.ai tools.

Read the main MCP guide before you start paid work.

FAQ

Do I need mcp-remote?

No. Warp connects to this server with a URL and an Authorization header. Use a local command server only when you want a stdio bridge for another reason.

Why does Warp not see THIRDS_API_KEY?

Start Warp from an environment that has the variable, or paste Bearer YOUR_API_KEY in the header field in the Warp UI. Restart Warp after you change a shell environment.

Does connecting spend credits?

No. Connecting and listing tools don't spend credits. AI template work and successful renders can. Ask your agent to show the action and the cost before it starts paid work.