Local-first API toolkit — proxy, client, mocks & flows
Free desktop app for API work on localhost: *.localhost proxying with capture, a client for REST/GraphQL/gRPC/SOAP/WebSocket/MCP & more, proxy-level mocks, git-synced workspaces, visual flows, a local mail inbox, and an agent-ready CLI. Windows, macOS, Linux.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.