The two-way relay
One relay.
Both directions.
EchoRelay sits in the middle of your HTTP traffic — the target your callers hit and the source that calls your services. Four shapes, one relay. Pick where you start.
What you can build
Four shapes, one relay.
1 → N
Fan-out
One request fans out to every target — authenticated, validated, retried, delivered at-least-once with a replayable failure queue.
See howcaller ⇄ target
Streaming
Forward a target’s SSE or chunked response straight back to your caller, chunk by chunk. Built for LLM token streaming.
See how1 → live + shadow
Mirror / shadow
Deliver to your live target and a shadow copy in the same request — for migration, audit, and A/B.
See howN → 1
Origin shield / ingestion
Clients connect to us, never to your origin. Auth, validation, and rate-limits at the edge; take inbound webhooks without exposing your servers.
See howNot sure which? Delivery modes & topologies in the docs walks all three modes and four shapes, with billing.
Connect everything. Build nothing.
No credit card required.