Open Source Swift API Clients

Rockxy is an open-source macOS HTTP debugging proxy for inspecting and modifying network traffic from applications, command-line tools, and iOS devices. It captures HTTP, HTTPS, WebSocket, and GraphQL communications through a native Swift interface. Developers can inspect request headers, payloads, responses, and timing information to diagnose API problems. Advanced filters and saved focus sets simplify investigating large traffic sessions. Traffic modification tools support request rewriting, response mocking, local file mapping, and simulated connection failures. An integrated AI assistant analyzes selected requests using local processing or configured AI models. Its MCP server allows external AI coding assistants to inspect captured traffic. Certificate management, sensitive-data redaction, and export tools support secure debugging workflows.