ProxyPin - Open Source Capture

Features
Mobile scan code connection: no need to manually configure WiFi proxy, including configuration synchronization. All terminals can scan codes to connect and forward traffic to each other.
Proxy Domain name filtering: Only intercept the traffic you need, and do not intercept other traffic to avoid interference with other applications.
Script: Support writing JavaScript scripts to process requests or responses.
Request rewrite: Support redirection, support replacement of request or response message, and can also modify request or response according to the increase.
Request mapping: Do not request remote services, use local configuration or scripts for response
Request Decryption: Configure AES decryption key to automatically decrypt HTTP message body
Request blocking: Support blocking requests according to URL, and do not send requests to the server.
Search: Search requests according to keywords, response types and other conditions
Others: Favorites, history, toolbox, etc.

Bug fixes:

• Fixed an issue where HTTPS request bodies could be lost after a CONNECT tunnel was established

What's New:
1. Added a built-in MCP server so AI assistants (e.g. Claude) can inspect and debug captured traffic;
2. Added built-in dynamic variables for environments;
3. Request rewrite rules can now be reordered with move up/down actions;
4. Fixed a crash triggered by the Windows context menu;
5. Fixed multi-value headers (e.g. multiple Set-Cookie) being incorrectly merged when handled by scripts or rewrite rules;
6. Fixed h2c (plaintext HTTP/2) capture, non-ASCII domain normalization, and certificate validation failures for IP hosts;
7. Fixed an iOS 13 crash, dropped bodies for close-delimited responses