# Flatcar Container Linux

**Canonical:** https://apis.io/providers/flatcar-container-linux/  
**Website:** https://www.flatcar.org  
**APIs profiled:** 8

Flatcar Container Linux is a CNCF incubating minimal, immutable Linux distribution designed for running containers. It provides automatic atomic updates through the Nebraska update server, ensuring nodes stay secure and consistent. Flatcar supports Kubernetes deployments on bare metal, cloud, and virtual environments with a focus on security and operational simplicity.

## Kin Score — 31.9 / 100 (thin)

Scored 2026-08-24 under rubric 0.13.0. Trend: flat (-0.3 from 32.2).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 45.3 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 26.2 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 28.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (8)

- **Flatcar Container Linux Activity API** — The Activity API from Flatcar Container Linux — 1 operation(s) for activity.
- **Flatcar Container Linux Apps API** — The Apps API from Flatcar Container Linux — 17 operation(s) for apps.
- **Flatcar Container Linux Channels API** — The Channels API from Flatcar Container Linux — 2 operation(s) for channels.
- **Flatcar Container Linux Config API** — The Config API from Flatcar Container Linux — 1 operation(s) for config.
- **Flatcar Container Linux Health API** — The Health API from Flatcar Container Linux — 1 operation(s) for health.
- **Flatcar Container Linux Instances API** — The Instances API from Flatcar Container Linux — 1 operation(s) for instances.
- **Flatcar Container Linux Login API** — The Login API from Flatcar Container Linux — 3 operation(s) for login.
- **Flatcar Container Linux Update API** — The Update API from Flatcar Container Linux — 1 operation(s) for update.

## Agentic access (1)

- **Flatcar Container Linux Agentic Access** — 40 operations · 17 acting

## Security (2)

- **Flatcar Container Linux Authentication** — apiKey/http · 3 schemes
- **Flatcar Container Linux Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Flatcar Container Linux Plans Pricing**

## Tags

Cloud-Native, Containers, Immutable Infrastructure, Incubating, Linux, Operating System

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