AT Protocol

AT Protocol Relay & Firehose

The Relay aggregates the com.atproto.sync.subscribeRepos firehose across PDS hosts and re-broadcasts the combined event stream over WebSocket. AppViews and indexers subscribe to a Relay to get a near-real-time view of every public record written on the network without polling individual PDS instances.

GitHub

Specifications

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AsyncAPI
https://raw.githubusercontent.com/api-evangelist/at-protocol/refs/heads/main/asyncapi/at-protocol-asyncapi.yml

Other Resources

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Specification
https://atproto.com/specs/sync
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Reference
https://github.com/bluesky-social/indigo

AsyncAPI Specification

at-protocol-asyncapi.yml Raw ↑