# Hubble API

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

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

The Hubble API is a gRPC-based observability API built on top of Cilium and eBPF that provides deep visibility into network flows, DNS queries, HTTP requests, and service communication within Kubernetes clusters. It exposes Observer and Peer gRPC services for querying flows, nodes, namespaces, and server status across single nodes or entire clusters via Hubble Relay.

## Machine-readable artifacts (6)

- **Documentation** — https://docs.cilium.io/en/stable/observability/hubble/index.html
- **Reference** — https://docs.cilium.io/en/stable/internals/hubble/
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/cilium/refs/heads/main/asyncapi/cilium-hubble-asyncapi.yml
- **GitHubRepository** — https://github.com/cilium/hubble
- **ChangeLog** — https://github.com/cilium/hubble/releases
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/cilium/refs/heads/main/apis.yml

## Other Cilium APIs (10)

- [Tetragon API](https://apis.io/apis/cilium/tetragon-api/)
- [Hubble Relay API](https://apis.io/apis/cilium/hubble-relay-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

eBPF, Kubernetes, Networking, Observability

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