KCL

KCL (Kusion Configuration Language) is a constraint-based record and functional programming language designed for configuration and policy scenarios. It provides features like type safety, automation, and validation for cloud-native configurations.

KCL publishes 1 API on the APIs.io network. Tagged areas include Cloud Native, Configuration Language, Infrastructure as Code, and Policy as Code.

KCL’s developer surface includes documentation, engineering blog, and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.9/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessFreemium

1 APIs

Cloud NativeConfiguration LanguageInfrastructure as CodePolicy as Code

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 19.9/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.2 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 4.8 / 13

Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/kcl: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

KCL

KCL constraint-based record and functional programming language for configuration and policy scenarios in cloud-native environments.

Pricing Plans 1

Published pricing tiers and plan structures.

Kcl Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Kcl Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: kcl
name: KCL
description: KCL (Kusion Configuration Language) is a constraint-based record and functional programming language designed
  for configuration and policy scenarios. It provides features like type safety, automation, and validation for cloud-native
  configurations.
type: Index
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/kcl.png
tags:
- Cloud Native
- Configuration Language
- Infrastructure as Code
- Policy as Code
url: https://raw.githubusercontent.com/api-evangelist/kcl/refs/heads/main/apis.yml
created: '2025-01-01'
modified: '2026-03-16'
specificationVersion: '0.19'
apis:
- aid: kcl:kcl
  name: KCL
  description: KCL constraint-based record and functional programming language for configuration and policy scenarios in cloud-native
    environments.
  humanURL: https://kcl-lang.io/
  tags:
  - Cloud Native
  - Configuration Language
  properties:
  - type: Documentation
    url: https://kcl-lang.io/docs/user_docs/getting-started/intro
  - type: GettingStarted
    url: https://kcl-lang.io/docs/user_docs/getting-started/kcl-quick-start
common:
- type: DomainSecurity
  url: security/kcl-domain-security.yml
- type: Website
  url: https://kcl-lang.io/
- type: Documentation
  url: https://kcl-lang.io/docs/user_docs/getting-started/intro
- type: GitHubOrganization
  url: https://github.com/kcl-lang
- url: https://kcl-lang.io/blog/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

KCL