Flannel

Flannel is a simple overlay network that satisfies the Kubernetes networking requirements. It runs a small single binary agent called flanneld on each host and is responsible for allocating a subnet lease to each host out of a larger preconfigured address space. Flannel does not expose its own HTTP/REST API; it stores network configuration in either the Kubernetes API or etcd directly and is managed via configuration files, kubectl, and Helm.

Flannel publishes 1 API on the APIs.io network. Tagged areas include CNI, Cloud-Native, Containers, Kubernetes, and Networking.

Flannel’s developer surface includes documentation, getting-started guide, and 3 more developer resources.

📡 Source on GitHub

14.7/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs

CNI Cloud-Native Containers Kubernetes Networking Open-SourceOverlay Network

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 14.7/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 4.3 / 20

Access Clarity 3.2 / 20

Operational Transparency 1.4 / 13

Contract Governance 0.0 / 12

Discoverability 5.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/flannel: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Flannel

Flannel is a simple overlay network that satisfies the Kubernetes networking requirements. It allocates subnet leases to each host and provides a layer 3 IPv4 network between mu...

Pricing Plans 1

Published pricing tiers and plan structures.

Flannel Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Flannel Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Flannel Finops

FINOPS

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Helm Chart

Helm Chart

Source (apis.yml)

aid: flannel
name: Flannel
description: Flannel is a simple overlay network that satisfies the Kubernetes networking requirements. It runs a small single
  binary agent called flanneld on each host and is responsible for allocating a subnet lease to each host out of a larger
  preconfigured address space. Flannel does not expose its own HTTP/REST API; it stores network configuration in either the
  Kubernetes API or etcd directly and is managed via configuration files, kubectl, and Helm.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/flannel.png
tags:
- CNI
- Cloud-Native
- Containers
- Kubernetes
- Networking
- Open-Source
- Overlay Network
tags_raw:
- CNI
- Cloud Native
- Containers
- Kubernetes
- Networking
- Open Source
- Overlay Network
url: https://raw.githubusercontent.com/api-evangelist/flannel/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-04-28'
specificationVersion: '0.23'
apis:
- aid: flannel:flannel
  name: Flannel
  description: Flannel is a simple overlay network that satisfies the Kubernetes networking requirements. It allocates subnet
    leases to each host and provides a layer 3 IPv4 network between multiple nodes in a cluster. It is configured via the
    Kubernetes API or etcd and exposes no REST API of its own.
  humanURL: https://github.com/flannel-io/flannel
  tags:
  - CNI
  - Containers
  - Kubernetes
  - Networking
  - Overlay Network
  properties:
  - type: Documentation
    url: https://github.com/flannel-io/flannel/blob/master/Documentation/kubernetes.md
  - type: GettingStarted
    url: https://github.com/flannel-io/flannel/blob/master/Documentation/running.md
  - type: Configuration
    url: https://github.com/flannel-io/flannel/blob/master/Documentation/configuration.md
common:
- type: Website
  url: https://github.com/flannel-io/flannel
- type: Documentation
  url: https://github.com/flannel-io/flannel/blob/master/Documentation/kubernetes.md
- type: GettingStarted
  url: https://github.com/flannel-io/flannel/blob/master/Documentation/running.md
- type: GitHubOrganization
  url: https://github.com/flannel-io
- type: Helm Chart
  url: https://flannel-io.github.io/flannel/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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