# Server-Sent Events (SSE)

**Canonical:** https://apis.io/apis/streaming/server-sent-events/  
**Provider:** Streaming — https://apis.io/providers/streaming/  
**Documentation:** https://html.spec.whatwg.org/multipage/server-sent-events.html

Server-Sent Events (SSE) is one of 21 APIs that [Streaming](https://apis.io/providers/streaming/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Streaming, HTTP, Protocol, and Standard. The published artifact set on APIs.io includes API documentation.

One-directional HTTP-based streaming from server to client using the `text/event-stream` media type. Defined by the HTML Living Standard EventSource API; widely used for LLM token streams, dashboards, and live feeds where bidirectionality is not required.

## Machine-readable artifacts (2)

- **Documentation** — https://html.spec.whatwg.org/multipage/server-sent-events.html
- **Documentation** — https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events

## Other Streaming APIs (12)

- [Apache Kafka](https://apis.io/apis/streaming/apache-kafka/)
- [Apache Pulsar](https://apis.io/apis/streaming/apache-pulsar/)
- [Redpanda](https://apis.io/apis/streaming/redpanda/)
- [NATS JetStream](https://apis.io/apis/streaming/nats-jetstream/)
- [Amazon Kinesis](https://apis.io/apis/streaming/aws-kinesis/)
- [Google Cloud Pub/Sub and Dataflow](https://apis.io/apis/streaming/gcp-pubsub/)
- [Azure Event Hubs](https://apis.io/apis/streaming/azure-event-hubs/)
- [Confluent Cloud](https://apis.io/apis/streaming/confluent-cloud/)
- [StreamNative](https://apis.io/apis/streaming/streamnative/)
- [WebSocket](https://apis.io/apis/streaming/websocket/)
- [gRPC Streaming](https://apis.io/apis/streaming/grpc-streaming/)
- [GraphQL Subscriptions](https://apis.io/apis/streaming/graphql-subscriptions/)

## Tags

Streaming, HTTP, Protocol, Standard

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