Coming soon: Packages are not yet published to npm, PyPI, or crates.io. This page documents the finished SDK spec. Use the REST API and signature test vectors until packages ship.
Install (when published)
REST client
Inbound webhook signing
WebSocket signal client
Connect towss://mcp.echozero.app/ws/signals with x-api-key in the Socket.IO handshake. Emit signal events with the same JSON schema as the inbound webhook.
Verify outbound webhooks
SDK helpers implementverifyInboundWebhook and outbound signal.execution verification. Golden vectors are in Signature test vectors.
Postman collection
Every public REST and MCP endpoint, ready to import — 182 requests across 24 folders.Download the Postman collection
EchoZero API.postman_collection.json
Every credential in the collection is a
{{variable}} placeholder — no keys are bundled. Requests that need HMAC follow the scheme in Webhook security; the signature test vectors let you confirm your signing before you send a live signal.