# CoreOS

**Canonical:** https://apis.io/providers/coreos/  
**Website:** http://coreos.com  
**APIs profiled:** 0

CoreOS was a San Francisco-based container infrastructure company founded in 2013 that built a lightweight, automatically-updating Linux distribution (Container Linux, originally CoreOS Linux) and a family of now-foundational cloud-native open source projects: etcd (the distributed key-value store at the heart of Kubernetes), the Quay container registry, the Tectonic enterprise Kubernetes platform, the rkt container engine, flannel networking, Clair image-vulnerability scanning, and Ignition provisioning. Red Hat acquired CoreOS in January 2018 for approximately $250 million. Its technologies were folded into Red Hat's portfolio — Container Linux became Red Hat CoreOS and the community Fedora CoreOS, Tectonic merged into OpenShift, Quay continues as Red Hat Quay, and etcd and rkt were donated to the Cloud Native Computing Foundation. The company no longer operates independently; coreos.com redirects to Red Hat OpenShift. The github.com/coreos organization remains active as the upstream home for Fedora CoreOS components such as Ignition, Butane, and fleetlock.

## Kin Score — 5.7 / 100 (minimal)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 5.7).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

Company, Containers, Kubernetes, Cloud Native, Linux, Container Registry, Infrastructure, Open Source, DevOps

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/coreos/). Scores are computed from the provider's own public artifacts under a published rubric.