Sign-in for AI agent apps

For developers building AI agent apps: CorroborateMe gives your agent a sign-in link to show the user, then the user's id once they sign in. $5.99 a month or $55 a year.

Who this is for

Any agent that can make HTTPS calls, or connect to a remote MCP server with a bearer token, can use CorroborateMe. That includes Claude, ChatGPT, Cursor and Grok Bot. We aren't partnered with any of them, and we don't cover their settings.

Grok Bot has its own page: sign-in for Grok Bot agents, and a setup guide at Grok Bot agent sign-in.

The call any of those agents can make

Create a login link

This call needs an active Pro plan. Without one it returns 402. POST /api/login-links with the company API key (aa_). Polling and server-sent events work with no extra setup. The default lifetime is 900 seconds.

curl -s -X POST https://corroborateme.com/api/login-links \
  -H "Authorization: Bearer aa_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"state":"job-42"}'

The response includes sessionId and loginUrl. Show loginUrl to the person. It opens the hosted sign-in page.

Read who signed in

curl -s https://corroborateme.com/api/login-links/SESSION_ID \
  -H "Authorization: Bearer aa_YOUR_KEY"

Replace SESSION_ID with sessionId from the create call. status is pending, completed, consumed, or expired. user_id (a cu_ id) and email are present after the person finishes, and null while the link is still pending.

To wait instead of polling, open GET /api/login-links/{id}/events. It streams for about 25 seconds and ends with a pending or done event.

Full walkthrough: authentication for AI agents. Pro is $5.99 a month or $55 a year.