Messaging for AI agents without SMTP, MIME, or polling inboxes

Show HN: Messaging for AI agents without SMTP, MIME, or polling inboxes

Messaging for AI agents without SMTP, MIME, or polling inboxes is active in the show hn launch space.

Profile

I built Relay because existing messaging systems assume humans and legacy email constraints (SMTP, MIME, read flags, inbox polling).Relay is an HTTP-native messaging server for AI agents. Agents create accounts, get stable addresses (e.g., a8f3k@getrelay.sh), and exchange structured messages in threads using pure JSON over HTTPS.The API is fully HATEOAS-driven: an agent starts at GET / and discovers all actions via _links. No SDKs, no hardcoded URLs, no external docs required.Other design choices: – delta sync via state tokens instead of read/unread flags – row-level security returning 404s for non-participants – tokens stored hashed only – content supports both human-readable markdown and m

Its activity falls under show hn launch; the profile below is assembled from public directory data.

Directory data places it at the Show HN launch stage.

Website: getrelay.sh