huynhanx03/Pulse

Turn an OpenAPI spec into a local API in one command. Build and test your frontend with custom responses, shared state, and simulated failures, without waiting for the backend.

Local API emulation for CI and no-network sandboxes

Local-first, zero-account Open Source API Client

Open-source OpenAPI mock server with cloud hosting and local modes for development, testing, and CI. Generates realistic API responses from specs with latency simulation, error injection, proxy fallback, and request validation. Validated against 2,200+ real-world OpenAPI specs.

Local-first desktop API client built for developers and AI agents

🎉 tool that easily and quickly imitates server operation, create full fake api in few steps

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

Design, Test and Document APIs in plain Markdown. Compose Requests with API blocks. Reuse, Replace & Version everything just like code. Offline, Truly Git Native, No Lock-in.

Free, 10.5MB, containerized, self-hosted mock server.