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Crossplane

Crossplane is a graduated CNCF open-source Kubernetes add-on that transforms a cluster into a universal control plane for cloud infrastructure, services, and applications. Crossplane introduces custom resources including CompositeResourceDefinitions (XRDs), Compositions, Claims, Providers, ProviderConfigs, Configurations, Functions, and EnvironmentConfigs, allowing platform teams to author self-service platform APIs that compose managed resources across AWS, GCP, Azure, and other providers using Kubernetes-style declarative configuration.

agent ready

Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.

Kin Score

API Evangelist profiles Crossplane the way a machine reads it — 20 machine-readable artifacts across 7 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Crossplane scores 63.6/100 (strong), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 63.6/100 · strong
Contract Quality 19.7 / 25
Developer Ergonomics 8.7 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 6.8 / 13
Governance 10.4 / 12
Discoverability 10.0 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 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

How we profile Crossplane

Each block below is one kind of artifact we hold for Crossplane. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 7

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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

Crossplane CompositeResourceDefinitions API

CompositeResourceDefinitions (XRDs) extend the Kubernetes API with new custom resource types. An XRD defines the schema and API surface for a composite resource and an optional ...

Crossplane Compositions API

Compositions define how to compose a set of managed resources or Composition Functions into a higher-level composite resource. A Composition acts as a template that maps fields ...

Crossplane Configurations API

Configurations are Crossplane packages that bundle Compositions and CompositeResourceDefinitions together into a distributable unit that can be installed into a Crossplane contr...

Crossplane DeploymentRuntimeConfigs API

DeploymentRuntimeConfigs customize the runtime behavior of Provider and Function deployments, including replica counts, resource limits, service account annotations, and pod tem...

Crossplane EnvironmentConfigs API

EnvironmentConfigs provide shared configuration data that can be referenced by Compositions via environment patches, enabling reusable configuration across multiple Compositions.

Crossplane Functions API

Functions are Crossplane packages that contain Composition Functions, which are OCI container images invoked during composition to perform advanced resource templating and trans...

Crossplane Providers API

Providers are Crossplane packages that install controllers and CRDs for managing resources on a specific infrastructure platform such as AWS, GCP, or Azure.

Scroll within the panel for all 7 ·

Open Collections 1

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Crossplane Kubernetes API

OPEN COLLECTION

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Crossplane Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

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

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Crossplane Context

6 classes · 17 properties

JSON-LD

Spectral Rules 2

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Crossplane API Rules

6 rules · 4 warnings

SPECTRAL

Crossplane API Rules

7 rules · 5 errors · 2 warnings

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

Crossplane Composition

4 properties

JSON SCHEMA

Crossplane Provider Configuration

0 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Crossplane Authentication

http · 1 scheme

SECURITY

Crossplane Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Crossplane Agentic Access

31 operations · 17 acting

31 operations · 17 acting

AGENTIC

Resources

Every other property we hold for Crossplane — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 1

Portal, sign-up, and the first successful call

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 1

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Other 2

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/crossplane · machine-readable index on apis.io