The two-way relay
One runtime.
Both directions.
EchoRelay sits in the middle of your HTTP traffic — the target your callers hit and the source that calls your services. Three shapes, one runtime. Pick where you start.
What you can build
Three shapes, one runtime.
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 howN → 1
Origin shield / ingestion
Callers get your EchoRelay URL, never the address of your servers. Auth, validation, and rate-limits at the edge; take inbound webhooks on one screened endpoint.
See howNot sure which? Delivery modes & topologies in the docs walks all three modes and three shapes, with billing.
Connect everything. Deploy nothing.
No credit card required.