Eliminate API integration headaches with Specmatic's no-code AI-powered API development suite. Teams ship APIs 10x faster by transforming specifications into executable contracts instantly—no coding required, no integration surprises.

GRACE (Graph-RAG Anchored Code Engineering): open Agent Skills for contract-driven AI code generation with semantic markup, knowledge graphs, and support for Claude Code, Codex CLI, and Kilo Code.

SCC Verifier MultiApi Converter allows us to use Spring Cloud Contract to generate contracts from an OpenApi yaml or AsyncApi yaml document

This project demonstrates contract-first development using a spec-kit approach where OpenAPI specifications evolve organically through feature development. Each feature analyzes existing contracts for reuse before extending the API, using Specmatic MCP as intelligent guardrails throughout the process.

Set up your GitHub Actions workflow with a specific version of specmatic

Provider-side demo using consumer-driven contract testing

Convert your API specifications into automated contract tests for reliable integration

Golang DB layer for lazy

Consumer-side demo using contract driven development

Turn your contracts into executable specifications. Contract Driven Development - Collaboratively Design & Independently Deploy MicroServices & MicroFrontends.

Your users expect and deserve web applications that update automatically

Lightweight implementation of contract checking in C++ and helpers for unit testing contracts without the need for death tests.

The specmatic documentation website

Petstore SOAP consumer example

Turn your contracts into executable specifications. Contract Driven Development - Collaboratively Design & Independently Deploy MicroServices & MicroFrontends.

AI 辅助软件开发的轻量协议框架：契约驱动、状态可追踪、验证有证据

Petstore SOAP API example

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.