# Supabase Realtime API

**Canonical:** https://apis.io/apis/supabase/realtime-api/  
**Provider:** Supabase — https://apis.io/providers/supabase/  
**Documentation:** https://supabase.com/docs/guides/realtime

Supabase Realtime API is one of 21 APIs that [Supabase](https://apis.io/providers/supabase/) publishes on the [APIs.io](https://apis.io/) network, described by an AsyncAPI event-driven specification. Tagged areas include Real-Time, WebSocket, Database, Presence, and Broadcast. The published artifact set on APIs.io includes API documentation and an AsyncAPI specification.

The Supabase Realtime API provides WebSocket-based subscriptions for real-time data changes from PostgreSQL databases. It supports three channel types: database change events (INSERT/UPDATE/DELETE on tables via logical replication), presence (track and synchronize connected users' state), and broadcast (low-latency message passing between clients). Authentication uses JWT tokens. Implemented using the Phoenix channels protocol.

## Machine-readable artifacts (3)

- **Documentation** — https://supabase.com/docs/guides/realtime
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/supabase/refs/heads/main/asyncapi/supabase-realtime-api-asyncapi.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/supabase/refs/heads/main/apis.yml

## Other Supabase APIs (12)

- [Supabase Admin API](https://apis.io/apis/supabase/supabase-admin-api/)
- [Supabase Authentication API](https://apis.io/apis/supabase/supabase-authentication-api/)
- [Supabase Buckets API](https://apis.io/apis/supabase/supabase-buckets-api/)
- [Supabase Configuration API](https://apis.io/apis/supabase/supabase-configuration-api/)
- [Supabase Database API](https://apis.io/apis/supabase/supabase-database-api/)
- [Supabase Domains API](https://apis.io/apis/supabase/supabase-domains-api/)
- [Supabase Functions API](https://apis.io/apis/supabase/supabase-functions-api/)
- [Supabase Invocation API](https://apis.io/apis/supabase/supabase-invocation-api/)
- [Supabase MFA API](https://apis.io/apis/supabase/supabase-mfa-api/)
- [Supabase Network API](https://apis.io/apis/supabase/supabase-network-api/)
- [Supabase OAuth API](https://apis.io/apis/supabase/supabase-oauth-api/)
- [Supabase Objects API](https://apis.io/apis/supabase/supabase-objects-api/)

## Tags

Real-Time, WebSocket, Database, Presence, Broadcast

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