api-contract

Prevent OpenAPI Generator from redefining your Java contract. Contract-preserving client generation for Spring Boot — available on Maven Central.

Backend-native API workbench that detects when your running implementation disagrees with OpenAPI.

A lightweight, Git-friendly tool for designing and collaborating on API contracts

通用系统工程化的系统架构搭建流程助手 Skill / A reusable system architecture builder skill for AI coding agents

clawsgo.cn 完整复刻：前端原样产物 + 零依赖 Node 复刻后端（211 条命令）+ 219 项端到端验收全绿。MIT.

Efficient expense tracking app for individuals and businesses. Log daily expenses, generate monthly reports, categorize spending, and integrate with a database. Check out the API contract: https://petstore.swagger.io/?url=https://raw.githubusercontent.com/pradipmudi/expensys/main/src/main/java/com/expensys/openapi/expensys_openapi.yml

Runtime-validated contracts, status-typed clients, and OpenAPI for Nuxt server routes.

Design a format-agnostic internal IDL with a form-based console, live-compiling to OpenAPI 3.1 (REST) and protobuf/gRPC (RPC) contracts, with a built-in mock debugger.可视化表单设计IDL，实时编译生成 OpenAPI 3.1（REST）与 protobuf/gRPC（RPC）契约，内置 mock 调试台方便前后端验收调试.

API workspace in plain markdown. Design specs, send requests, validate contracts from CLI, browser, and coding agents.

OpenAPI 3.1 definition and Assurance Graph for the Heyrafiki API.

A CLI tool that does health and idempotency checks for your REST APIs

Compact, validated data-layer manifests for token-efficient AI development — entities, endpoints, components and the requirements they serve, in one file your build can check.

Vue 2 and Element UI admin dashboard practice with routing, CRUD pages and API contract documentation.

Document QA prototype with upload workflow, question-answering interface, and AI application engineering notes.

API (or Service) Contract example (for my own reference)

Contracts and TypeScript clients generated from a running ASP.NET Core 10 API. The client reads and writes exactly the JSON the server does — int64, decimal and date offsets intact — and what cannot be described is reported, never guessed.

lenscheck-contract — your Django backend keeps a list of what it does, and can't lie about it. Runtime companion to pryti-semantic-reviewer.

Detect API schema drift before your integrations break.

A Python framework for contract testing in CI/CD pipelines. Validates communication boundaries between services without requiring a shared environment.

Challenge Brain Agriculture