# Hubble Relay API

**Canonical:** https://apis.io/apis/cilium/hubble-relay-api/  
**Provider:** Cilium — https://apis.io/providers/cilium/  
**Documentation:** https://docs.cilium.io/en/stable/observability/hubble/index.html

Hubble Relay API is one of 11 APIs that [Cilium](https://apis.io/providers/cilium/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include gRPC, Kubernetes, Networking, and Observability. The published artifact set on APIs.io includes API documentation, an API reference, a GitHub repository, and a changelog.

The Hubble Relay API is a gRPC service that aggregates and relays network flow data from multiple Hubble agents running across Kubernetes cluster nodes. It provides a single cluster-wide endpoint for the Hubble Observer service, enabling centralized queries of flow data, DNS events, and HTTP metrics from all nodes through Hubble Relay without connecting to each node individually.

## Machine-readable artifacts (4)

- **Documentation** — https://docs.cilium.io/en/stable/observability/hubble/index.html
- **Reference** — https://github.com/cilium/cilium/tree/main/api/v1/relay
- **GitHubRepository** — https://github.com/cilium/cilium
- **ChangeLog** — https://github.com/cilium/cilium/releases

## Other Cilium APIs (10)

- [Hubble API](https://apis.io/apis/cilium/hubble-api/)
- [Tetragon API](https://apis.io/apis/cilium/tetragon-api/)
- [Cilium BGP API](https://apis.io/apis/cilium/cilium-bgp-api/)
- [Cilium Daemon API](https://apis.io/apis/cilium/cilium-daemon-api/)
- [Cilium Endpoint API](https://apis.io/apis/cilium/cilium-endpoint-api/)
- [Cilium IPAM API](https://apis.io/apis/cilium/cilium-ipam-api/)
- [Cilium Lrp API](https://apis.io/apis/cilium/cilium-lrp-api/)
- [Cilium Policy API](https://apis.io/apis/cilium/cilium-policy-api/)
- [Cilium Prefilter API](https://apis.io/apis/cilium/cilium-prefilter-api/)
- [Cilium Service API](https://apis.io/apis/cilium/cilium-service-api/)

## Tags

gRPC, Kubernetes, Networking, Observability

---

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