MCP Events brings webhooks to ChatGPT agents

MCP Events supplies the missing push layer for agents, but it remains a draft protocol whose security and lifecycle details demand careful implementation.

• –Servers expose event types and filters through `events/list`, then manage subscriptions with `events/subscribe` and `events/unsubscribe`
• –ChatGPT currently supports webhook delivery and callback verification, while polling and streaming remain unsupported
• –Persistent subscriptions, outbound HTTPS, signing secrets, and permission checks make this closer to production infrastructure than a simple notification API
• –Event payloads are untrusted input, so prompt injection and stale permissions require server-side safeguards
• –The draft’s broader promise is significant: agents can monitor CI failures, feedback channels, incidents, and long-running jobs without constant polling