Pact website screenshot

Pact

Pact is an open source contract testing framework that verifies API consumer-provider interactions with support for Ruby, Java, .NET, JavaScript, Go, and Python. Pact Broker provides a hypermedia-driven HAL API for storing, retrieving, and verifying contracts between services.

Pact publishes 5 APIs on the APIs.io network, including Index API, Pacticipants API, Pacts API, and 2 more. Tagged areas include Contract Testing, Open Source, and Testing.

Pact’s developer surface includes authentication, documentation, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
36.0/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
6 APIs
Contract TestingOpen SourceTesting

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 36.0/100 · thin
Contract Quality 13.4 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 5.6 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
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/pact: 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 6

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

Pact Broker API

Pact Broker is a hypermedia HAL API for storing and retrieving consumer contracts created with the Pact contract testing framework. It enables teams to share, version, and verif...

Pact Index API

The Index API from Pact — 1 operation(s) for index.

Pact Pacticipants API

The Pacticipants API from Pact — 3 operation(s) for pacticipants.

Pact Pacts API

The Pacts API from Pact — 2 operation(s) for pacts.

Pact Verifications API

The Verifications API from Pact — 1 operation(s) for verifications.

Pact Webhooks API

The Webhooks API from Pact — 1 operation(s) for webhooks.

Open Collections 1

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

Pact Broker API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Pact Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Pact Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Pact Finops

FINOPS

Security Posture 2

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

Pact Authentication

http · 1 scheme

SECURITY

Pact Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Pact Agentic Access

11 operations · 4 acting

11 operations · 4 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

Slack
Slack

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: pact
name: Pact
description: Pact is an open source contract testing framework that verifies API consumer-provider interactions with support
  for Ruby, Java, .NET, JavaScript, Go, and Python. Pact Broker provides a hypermedia-driven HAL API for storing, retrieving,
  and verifying contracts between services.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/pact.png
tags:
- Contract Testing
- Open Source
- Testing
url: https://raw.githubusercontent.com/api-evangelist/pact/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-04-28'
position: Consumer
access: 3rd-Party
specificationVersion: '0.19'
apis:
- aid: pact:pact-broker
  name: Pact Broker API
  description: Pact Broker is a hypermedia HAL API for storing and retrieving consumer contracts created with the Pact contract
    testing framework. It enables teams to share, version, and verify pacts between consumers and providers.
  humanURL: https://docs.pact.io/pact_broker
  tags:
  - Contract Testing
  - Testing
  properties:
  - type: Documentation
    url: https://docs.pact.io/pact_broker
  - type: GitHubRepository
    url: https://github.com/pact-foundation/pact_broker
  - type: Hosted Service
    url: https://pactflow.io
- aid: pact:pact-index-api
  name: Pact Index API
  description: The Index API from Pact — 1 operation(s) for index.
  humanURL: https://docs.pact.io/pact_broker
  tags:
  - Index
  properties:
  - type: OpenAPI
    url: openapi/pact-index-api-openapi.yml
- aid: pact:pact-pacticipants-api
  name: Pact Pacticipants API
  description: The Pacticipants API from Pact — 3 operation(s) for pacticipants.
  humanURL: https://docs.pact.io/pact_broker
  tags:
  - Pacticipants
  properties:
  - type: OpenAPI
    url: openapi/pact-pacticipants-api-openapi.yml
- aid: pact:pact-pacts-api
  name: Pact Pacts API
  description: The Pacts API from Pact — 2 operation(s) for pacts.
  humanURL: https://docs.pact.io/pact_broker
  tags:
  - Pacts
  properties:
  - type: OpenAPI
    url: openapi/pact-pacts-api-openapi.yml
- aid: pact:pact-verifications-api
  name: Pact Verifications API
  description: The Verifications API from Pact — 1 operation(s) for verifications.
  humanURL: https://docs.pact.io/pact_broker
  tags:
  - Verifications
  properties:
  - type: OpenAPI
    url: openapi/pact-verifications-api-openapi.yml
- aid: pact:pact-webhooks-api
  name: Pact Webhooks API
  description: The Webhooks API from Pact — 1 operation(s) for webhooks.
  humanURL: https://docs.pact.io/pact_broker
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/pact-webhooks-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/pact-agentic-access.yml
- type: DomainSecurity
  url: security/pact-domain-security.yml
- type: Authentication
  url: authentication/pact-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/pact
- type: Website
  url: https://pact.io
- type: Documentation
  url: https://docs.pact.io
- type: GitHubOrganization
  url: https://github.com/pact-foundation
- type: Slack
  url: https://pact-foundation.slack.com
- type: Blog
  url: https://docs.pact.io/blog
- type: LlmsText
  url: https://docs.pact.io/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com