toolcairn_auth

toolcairn_auth is the one tool every MCP client sees on first connect. Once login succeeds and the client restarts, the full catalog of 14 tools is registered.

Input

action················································································"login" | "logout" | "status"required

What to do. Login triggers the device flow.

Login

{ "action": "login" }

{
  "ok": true,
  "verification_uri": "https://toolcairn.neurynae.com/device",
  "user_code": "ABCD-EFGH",
  "expires_in": 600,
  "message": "Open the URL, enter the code, then restart your MCP client."
}

Status

{
  "authenticated": true,
  "email": "you@example.com",
  "tier": "free",
  "expires_at": "2026-07-19T00:00:00Z"
}

Related

• Device Auth Flow — sequence diagram, token storage details.