CircleCI

CircleCI is a continuous integration and delivery platform that automates software building, testing, and deployment. This repository is an alias of the primary `circleci` index and is preserved so historical references and links continue to resolve. The full set of REST, runner, webhook, and orbs APIs is profiled in the `circleci` repository at https://github.com/api-evangelist/circleci.

CircleCI publishes 6 APIs on the APIs.io network, including Context API, Job API, Pipeline API, and 3 more. Tagged areas include CI/CD, Continuous Deployment, Continuous Integration, DevOps, and Pipelines.

CircleCI’s developer surface includes authentication, engineering blog, and 4 more developer resources.

📡 Source on GitHub

30.6/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

8 APIs

CI/CD Continuous Deployment Continuous Integration DevOps Pipelines Workflows

Kin Score

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

Composite quality — 30.6/100 · thin

Contract Quality 12.2 / 23

Developer Ergonomics 4.3 / 18

Access Clarity 4.3 / 18

Operational Transparency 0.9 / 12

Contract Governance 0.0 / 11

Discoverability 6.5 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

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

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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/circlecis: 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 8

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

CircleCI Self-Hosted Runner API

The CircleCI Runner API is used for the management and execution of self-hosted runner jobs.

CircleCI Webhooks

Real-time event notifications for pipeline, workflow, and job lifecycle events delivered via HTTP callbacks.

CircleCI Context API

Operations for organization contexts.

CircleCI Job API

Job inspection and cancellation.

CircleCI Pipeline API

Pipeline trigger and inspection.

CircleCI Project API

Project-scoped operations.

CircleCI User API

Current user information.

CircleCI Workflow API

Workflow inspection and cancellation.

Scroll for all 8

Open Collections 8

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

API Collection

OPEN COLLECTION

CircleCI REST API V2 Context API

OPEN COLLECTION

CircleCI REST API V2 Context Job API

OPEN COLLECTION

CircleCI REST API V2 Context Pipeline API

OPEN COLLECTION

CircleCI REST API V2 Context Project API

OPEN COLLECTION

CircleCI REST API V2 Context User API

OPEN COLLECTION

CircleCI REST API V2 Context Workflow API

OPEN COLLECTION

CircleCI REST API V2

OPEN COLLECTION

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Circlecis Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Circlecis Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Circlecis Finops

FINOPS

Security Posture 4

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

Circlecis Authentication

apiKey/http · 2 schemes

SECURITY

Circlecis Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Circlecis Vulnerability Disclosure

security.txt · contact published

SECURITY

Circlecis Trust Center

SOC 2, FedRAMP, GDPR, CSA STAR

SECURITY

Agentic Access 1

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

Circlecis Agentic Access

9 operations · 5 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

aid: circlecis
url: https://raw.githubusercontent.com/api-evangelist/circlecis/refs/heads/main/apis.yml
name: CircleCI
tags:
- CI/CD
- Continuous Deployment
- Continuous Integration
- DevOps
- Pipelines
- Workflows
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/circlecis.png
access: 3rd-Party
created: '2025-01-08'
modified: '2026-05-19'
position: Consuming
description: CircleCI is a continuous integration and delivery platform that automates software building, testing, and deployment.
  This repository is an alias of the primary `circleci` index and is preserved so historical references and links continue
  to resolve. The full set of REST, runner, webhook, and orbs APIs is profiled in the `circleci` repository at https://github.com/api-evangelist/circleci.
apis:
- aid: circlecis:runner-api
  name: CircleCI Self-Hosted Runner API
  tags:
  - CI/CD
  - Runners
  - Self-Hosted
  humanURL: https://circleci.com/docs/runner-api/
  properties:
  - url: https://circleci.com/docs/runner-api/
    type: Documentation
  description: The CircleCI Runner API is used for the management and execution of self-hosted runner jobs.
- aid: circlecis:webhooks
  name: CircleCI Webhooks
  tags:
  - CI/CD
  - Event
  - Webhook
  tags_raw:
  - CI/CD
  - Events
  - Webhooks
  humanURL: https://circleci.com/docs/webhooks/
  properties:
  - url: https://circleci.com/docs/webhooks/
    type: Documentation
  description: Real-time event notifications for pipeline, workflow, and job lifecycle events delivered via HTTP callbacks.
- aid: circlecis:circlecis-context-api
  name: CircleCI Context API
  description: Operations for organization contexts.
  humanURL: https://circleci.com/docs/api/v2/
  tags:
  - Context
  properties:
  - type: OpenAPI
    url: openapi/circlecis-context-api-openapi.yml
  - type: Documentation
    url: https://circleci.com/docs/api/v2/
- aid: circlecis:circlecis-job-api
  name: CircleCI Job API
  description: Job inspection and cancellation.
  humanURL: https://circleci.com/docs/api/v2/
  tags:
  - Job
  properties:
  - type: OpenAPI
    url: openapi/circlecis-job-api-openapi.yml
  - type: Documentation
    url: https://circleci.com/docs/api/v2/
- aid: circlecis:circlecis-pipeline-api
  name: CircleCI Pipeline API
  description: Pipeline trigger and inspection.
  humanURL: https://circleci.com/docs/api/v2/
  tags:
  - Pipeline
  properties:
  - type: OpenAPI
    url: openapi/circlecis-pipeline-api-openapi.yml
  - type: Documentation
    url: https://circleci.com/docs/api/v2/
- aid: circlecis:circlecis-project-api
  name: CircleCI Project API
  description: Project-scoped operations.
  humanURL: https://circleci.com/docs/api/v2/
  tags:
  - Project
  properties:
  - type: OpenAPI
    url: openapi/circlecis-project-api-openapi.yml
  - type: Documentation
    url: https://circleci.com/docs/api/v2/
- aid: circlecis:circlecis-user-api
  name: CircleCI User API
  description: Current user information.
  humanURL: https://circleci.com/docs/api/v2/
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/circlecis-user-api-openapi.yml
  - type: Documentation
    url: https://circleci.com/docs/api/v2/
- aid: circlecis:circlecis-workflow-api
  name: CircleCI Workflow API
  description: Workflow inspection and cancellation.
  humanURL: https://circleci.com/docs/api/v2/
  tags:
  - Workflows
  tags_raw:
  - Workflow
  properties:
  - type: OpenAPI
    url: openapi/circlecis-workflow-api-openapi.yml
  - type: Documentation
    url: https://circleci.com/docs/api/v2/
common:
- type: AgenticAccess
  url: agentic-access/circlecis-agentic-access.yml
- type: TrustCenter
  url: security/circlecis-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/circlecis-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/circlecis-domain-security.yml
- type: Authentication
  url: authentication/circlecis-authentication.yml
- url: https://circleci.com/blog/feed.xml
  type: Blog
integrations:
- name: GitHub
- name: GitLab
- name: Bitbucket
- name: AWS
- name: GCP
- name: Azure
- name: Kubernetes
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

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