Specmatic

Specmatic is an AI-powered, no-code platform for API contract testing, service virtualization, and governance. It transforms API specifications (OpenAPI, AsyncAPI, gRPC, GraphQL, WSDL) into executable contracts for contract-driven development, enabling teams to ship APIs 10x faster with zero contract drift. Specmatic supports HTTP/REST, Kafka, JMS, SOAP, Redis, Google Pub/Sub, RabbitMQ, ActiveMQ, AWS SNS/SQS/EventBridge, IBM MQ, MQTT, WebSocket, and MCP protocols.

Specmatic publishes 1 API on the APIs.io network. Tagged areas include API Contract Testing, API Governance, API Mocking, Backward Compatibility, and Contract-Driven Development.

The Specmatic catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Specmatic’s developer surface includes documentation, pricing, engineering blog, GitHub presence, code examples, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

26.4/100 thin ▬ flat Agent 10/100 agent aware Front door AI 6/6 dominant open core · MIT Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemium

1 APIs 1 MCP Servers 3 Agent Skills

API Contract TestingAPI Governance API Mocking Backward CompatibilityContract-Driven DevelopmentService Virtualization

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 26.4/100 · thin

Contract Quality 5.2 / 21

Developer Ergonomics 4.3 / 17

Access Clarity 4.5 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.4 / 10

Discoverability 5.5 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 10/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/specmatic: 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.

Specmatic

Specmatic provides contract testing, intelligent service virtualization, and API mocking by transforming API specifications into executable contracts. It supports backward compa...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

debug-specmatic-failures

AGENT SKILL

fix-openapi-spec

AGENT SKILL

specmatic-openapi-spec-extractor

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Specmatic Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Specmatic Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Specmatic Finops

FINOPS

Semantic Vocabularies 1

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

Specmatic Context

9 classes · 9 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Specmatic API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

Specmatic Contract

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Specmatic Contract Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Specmatic Contract Example

10 fields

EXAMPLE

Security Posture 1

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

Specmatic Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

AgentSkills

AgentSkills

Build 6

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

GitHubOrganization

SDKs

SDKs

Examples

GitHubAction

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ContactUs

ContactUs

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CaseStudies

CaseStudies

Source (apis.yml)

aid: specmatic
name: Specmatic
description: Specmatic is an AI-powered, no-code platform for API contract testing, service virtualization, and governance.
  It transforms API specifications (OpenAPI, AsyncAPI, gRPC, GraphQL, WSDL) into executable contracts for contract-driven
  development, enabling teams to ship APIs 10x faster with zero contract drift. Specmatic supports HTTP/REST, Kafka, JMS,
  SOAP, Redis, Google Pub/Sub, RabbitMQ, ActiveMQ, AWS SNS/SQS/EventBridge, IBM MQ, MQTT, WebSocket, and MCP protocols.
type: Index
deliveryModel:
  model: open-core
  license: MIT
  license_evidence:
    repo: specmatic/specmatic
    spdx: MIT
    stars: 396
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: medium
  source:
  - pricing
  - repository-license
  generated: '2026-09-25'
  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/specmatic.png
tags:
- API Contract Testing
- API Governance
- API Mocking
- Backward Compatibility
- Contract-Driven Development
- Service Virtualization
url: https://raw.githubusercontent.com/api-evangelist/specmatic/refs/heads/main/apis.yml
created: '2025-01-25'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: specmatic:specmatic
  name: Specmatic
  description: Specmatic provides contract testing, intelligent service virtualization, and API mocking by transforming API
    specifications into executable contracts. It supports backward compatibility checking, API coverage reports, resiliency
    testing, and CI/CD pipeline integration across HTTP/REST, Kafka, gRPC, GraphQL, WSDL, and MCP protocols.
  humanURL: https://specmatic.io
  baseURL: https://app.specmatic.io
  tags:
  - API Contract Testing
  - API Governance
  - API Mocking
  - Backward Compatibility
  - Contract-Driven Development
  - Service Virtualization
  properties:
  - type: Documentation
    url: https://docs.specmatic.io
  - type: GettingStarted
    url: https://specmatic.io/getting-started/
  - type: Pricing
    url: https://specmatic.io/pricing/
  - type: Blog
    url: https://specmatic.io/specmatic-updates/
  - type: GitHub
    url: https://github.com/specmatic/specmatic
  - type: X
    url: https://twitter.com/specmatic
  - type: LinkedIn
    url: https://www.linkedin.com/company/specmatic
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/specmatic/refs/heads/main/json-schema/specmatic-contract-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/specmatic/refs/heads/main/json-structure/specmatic-contract-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/specmatic/refs/heads/main/json-ld/specmatic-context.jsonld
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/specmatic/refs/heads/main/vocabulary/specmatic-vocabulary.yml
common:
- type: DomainSecurity
  url: security/specmatic-domain-security.yml
- type: Website
  url: https://specmatic.io
- type: Documentation
  url: https://docs.specmatic.io
- type: Pricing
  url: https://specmatic.io/pricing/
- type: Blog
  url: https://specmatic.io/specmatic-updates/
- type: GitHub
  url: https://github.com/specmatic/specmatic
- type: GitHubOrganization
  url: https://github.com/specmatic
- type: ContactUs
  url: https://specmatic.io/contact-us/
- type: CaseStudies
  url: https://specmatic.io/case-studies/
- type: SDKs
  url: https://github.com/specmatic/specmatic-node
  x-name: Specmatic Node.js SDK
  x-language: TypeScript
- type: SDKs
  url: https://github.com/specmatic/specmatic-python-extensions
  x-name: Specmatic Python Extensions
  x-language: Python
- type: Examples
  url: https://github.com/specmatic/specmatic-order-contracts
- type: GitHubAction
  url: https://github.com/specmatic/specmatic-insights-build-reporter-github-action
- name: MCP Server
  url: https://github.com/specmatic/specmatic-mcp-server
  type: MCPServer
- name: Agent Skills
  url: https://github.com/specmatic/skills
  type: AgentSkills
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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