ApiArk – Local-first, lightweight open-source API client with git-native YAML collections

Summary: ApiArk is a local-first API client built with Tauri and Rust, using about 60MB RAM and under 2 seconds startup. It supports REST, GraphQL, gRPC, WebSocket, SSE, and MQTT in one interface, storing collections as plain YAML files compatible with Git. It requires no login, cloud, or telemetry and is MIT licensed.

What it does

ApiArk manages API requests locally with collections saved as YAML files on the filesystem, enabling offline use and git-diffable version control. It supports multiple protocols and includes a native MCP server for AI agents.

Who it's for

Developers seeking a lightweight, privacy-focused API client without cloud dependencies or heavy resource usage.

Why it matters

It reduces memory usage and eliminates login requirements while providing a git-native, offline-first API testing environment.