# Layercode Webhooks API

**Canonical:** https://apis.io/apis/layercode/layercode-webhooks-api/  
**Provider:** Layercode — https://apis.io/providers/layercode/  
**Base URL:** https://docs.layercode.com/api-reference/webhook-sse-api  
**Documentation:** https://docs.layercode.com/api-reference/webhook-sse-api

Layercode Webhooks API is one of 5 APIs that [Layercode](https://apis.io/providers/layercode/) publishes on the [APIs.io](https://apis.io/) network, described by an AsyncAPI event-driven specification. Tagged areas include Webhook, SSE, and Event. The published artifact set on APIs.io includes API documentation, an API reference, and an AsyncAPI specification.

HMAC-signed webhook Layercode POSTs to your backend with session and transcript events (session.start, message, data, session.update, session.end); your backend streams response.tts / response.data / response.end events back as Server-Sent Events that drive the agent's speech.

## Machine-readable artifacts (3)

- **Documentation** — https://docs.layercode.com/api-reference/webhook-sse-api
- **APIReference** — https://docs.layercode.com/api-reference/webhook-sse-api
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/layercode/refs/heads/main/asyncapi/layercode-asyncapi.yml

## Other Layercode APIs (4)

- [Layercode Realtime Voice API](https://apis.io/apis/layercode/layercode-realtime-voice-api/)
- [Layercode Agents API](https://apis.io/apis/layercode/layercode-agents-api/)
- [Layercode Calls API](https://apis.io/apis/layercode/layercode-calls-api/)
- [Layercode Sessions API](https://apis.io/apis/layercode/layercode-sessions-api/)

## Tags

Webhook, SSE, Event

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/layercode/layercode-webhooks-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/layercode/.