Changelog

Shipped changes to SignalBin worth knowing about if you integrate against the API or watch a workspace evolve, newest first. It isn't every commit.

2026-08-21: Documentation site, and MCP tools for destinations and replay

This site went live at /docs. The MCP server picked up the destination and replay tools it had been missing, so an AI client can now list, create, update, and delete an endpoint's destinations, trigger a replay, and read a capture's replay history.

• See MCP Integration for the full tool list

2026-08-20: Destinations replace forward rules

Endpoint forward rules gave way to destinations. An endpoint now fans each captured request out to up to 10 destinations unconditionally, rather than matching against rule conditions. Destinations carry their own method override and header transforms, the latter inherited from the forward-rule transforms added the day before, along with delivery health tracking and retry with backoff. The forward_url column and the single-destination model are gone.

• GET/POST /api/v1/endpoints/{id}/destinations, PATCH/DELETE .../destinations/{destinationID}
• See Endpoints & Destinations

2026-08-19: Real-time event stream for the CLI

A bearer-authed GET /api/v1/events lets signalbin-cli's listen command, and any other API client, watch captures arrive live instead of polling.

2026-08-19: Replay history

GET/POST /api/v1/webhooks/{id}/replays records and lists past replay attempts against a capture, so the history is visible rather than just the most recent attempt.

2026-08-19: Sample payload library

A library of sample webhook payloads you can send to an endpoint, plus custom payloads of your own written in an in-app code editor.

2026-08-19: Per-endpoint mock responses

Mock response rules let an endpoint return a canned status, content type, and body instead of the default 202 Accepted. They live on an endpoint's Mock response tab.

2026-08-18: Webhook replay

Any captured webhook can be replayed against its destinations on demand, which saves waiting on the original sender to fire again after you fix a downstream bug.

2026-08-18: Clerk authentication

SignalBin's custom cookie and CSRF auth was replaced with Clerk. Sign-in, sessions, and identity now run through Clerk end to end.

2026-08-17: Public REST API and scoped tokens

The versioned /api/v1 REST API arrived, along with scoped API tokens and the OpenAPI-generated reference at signalbin.work/api/docs. The same release added SignalBin's own MCP server and agent skill doc, letting AI clients drive a workspace directly. See MCP Integration.

2026-05-17: Rate limits

Per-endpoint webhook rate limiting to protect workspaces from runaway senders, plus encrypted deploy secrets for production configuration.

INFO

For API-level detail on any of this, the API Reference points to the endpoint-by-endpoint documentation.