Changelog

Graph tool

• Visualize HTTP data using a network graph.
• Select source and destination node types to find connections.
• Use cluster, radial and grid layouts to view data.

Other changes

• Improvements to auto decode in Transform tool.
• Fixes to handling of text encodings.
• Visual fixes and other improvements.

Changes in this version

• Fixes to Zstandard decompression.
• Fixes to decoding of binary formats.

Bug fixes and minor improvements.

Client app based TLS proxy

• Include and exclude specific client apps from TLS proxying.

Status bar item

• Status bar item that indicates proxy status and shows system HTTP/HTTPS proxy configuration.

Other changes

• New Xcode color theme.
• Allows using {{variable}} syntax in input fields of Authentication and Rewrite rules.
• New transform operations for data decoding, string escaping and converting charset.
• Improved logic for automatic system HTTP/HTTPS proxy configuration.
• Improvements to auto decoding of data in Transform tool.
• Visual fixes and other improvements.

Authenticate to remote servers

• Set up authentication rules that match to specific requests.
• Authentication headers are added to proxied traffic as well as requests sent from Test and Editor tools.
• Basic Auth, API Key, Bearer Token, JWT, Digest and NTLMv1/v2 are available.

More binary formats

• Adds support for decoding PHP serialize, Java serialization, Ruby Marshal, Python pickle, ASN.1 BER/DER and WBXML.

Other changes

• Message history timestamps show milliseconds.
• Other visual fixes and improvements.

Auto decode of data

• Redesigned Transform tool that finds a decoding chain for current input data.
• Allows organizing transform recipes into folders.
• Renders binary formats in tree view representation.

Binary formats

• Message history now decodes various binary formats.
• Amazon Ion, BSON, CBOR, FlexBuffers, gRPC, Keyed Archive, MessagePack, Property List, Protobuf, Smile, Thrift, and UBJSON are currently supported.

Beautified code

• View HTML and JavaScript in tree view or beautified code.
• Automatic JavaScript deobfuscation for some known formats.

Other changes

• Other visual fixes and improvements.

Matching requests by client app

• Rewrites and scripting can now match requests by client app.

Other changes

• JSON and XML rendering with tree view in Sockets tool.
• Keyboard shortcuts for editor font size.
• Fixes an issue in table view rendering.
• Other visual fixes and improvements.

More inspection power

• Target address override in rewrite actions to redirect specific requests to a new destination.
• Enable transparent proxying in listener options. It allows inspecting traffic of applications that are not proxy-aware.
• TLS Key Logging that allows you to decrypt proxied TLS traffic in Wireshark.

Polished viewing experience

• XML tree view with expandable nodes and inline search.
• Image metadata overlay with format, dimensions and color profile.
• Many monospace fonts like Fira Code, Monaspace and Noto are now available in appearance settings.

Other changes

• Backup and restore all Proxygen configurations. This allows moving your setup to another computer.
• Add menu action to copy transaction (request and response) as text.
• Visual fixes and improvements.

MCP Server

• Give AI agents access to Proxygen features using Model Context Protocol.
• MCP server runs on localhost and requires a per-session authentication token.
• AI agents can inspect traffic, send requests, manage rewrites and scripts, run tests — all against your live Proxygen document.

Other changes

• Send to Mac now handles transmission of large body data like video.

New Test tool

• Redesigned Test tool that supports per request scripting, test assertions, and variable extraction.
• Insert variable values in requests using {{name}} syntax.
• Organize your tests in collections.

Variables

• Store values such as auth tokens and identifiers in environment variables. Then use them in requests in Test and Editor tools using {{name}} syntax.
• New getVariable and setVariable utility functions in scripting.

Sitemap

• Get an hierarchical overview of proxied HTTP traffic in a tree like sitemap.
• Use sitemap to quickly filter to matching traffic in History tool.

New color themes

• Many new editor themes such as Dracula, Nord and Monokai.

Here's what's new:

• Adds capture of SSE message in Sockets tool.

Bug fixes and minor improvements.

Here's what's new:

• Write JavaScript code to modify proxied traffic. Scripts have access to URL, headers and body data. Use your local files as body data.
• Improved console with event filtering and search.
• Various small fixes and improvements.

Here's what's new:

• New reimplemented Diff tool with new split and unified views.
• Message filtering using JSON and XML paths.
• Transform operations that query a JSON or XML path.
• Various small fixes and improvements.

Here's what's new:

• Add schemaless Protobuf decoding to message viewer and as a new transform operation.
• Update Tree-sitter syntax highlighter to latest version.
• Various small fixes and improvements.

Here's what's new:

• Add context menu items to transform and diff selected text in message editors.
• Add keyboard navigation to uneditable message editors.
• Fix text layout in message editors.

Here's what's new:

• Add text case transformation menu items.
• Add more keyboard shortcuts for editing text.
• Fix text selection by dragging cursor and shift clicking.
• Fix text selection by double and triple clicking.

Here's what's new:

• Add a Help Book that can be browsed while offline.
• Fix potential crash when viewing JSON data.

Here's what's new:

• Add appearance option to show or hide images in menu items.

Here's what's new:

• Add support for HAR (HTTP Archive), Charles Proxy, Proxyman and Mitmproxy file formats. Proxygen can now open documents, and import or export in any of these formats.
• Allow dragging messages from History to export to HAR file.
• Fix applying filter rules for opened document.
• Small visual improvements.

Here's what's new:

• Fix scroll edge appearance on macOS Tahoe.

Here's what's new:

• Use wildcards in match and replace request URI field.
• Fix an issue that prevented connecting through the proxy.

Here's what's new:

• Add client certificate support for mTLS connections.
• Add syntax highlighting to Test tool request editor.
• Small bug fixes and visual improvements.

Here's what's new:

• Preview selected message using Quick Look.
• Add search and replace to all message editors.

Here's what's new:

• Add client app lookup that finds application that sent each request.
• Add privileged helper tool that automatically configures system HTTP/HTTPS proxy address.
• Add automatic Proxygen CA certificate installation to keychain.
• Add automatic installation of Proxygen CA certificate to all booted iOS Simulators.
• Add proxy setup window to set up helper tool and install CA certificate.
• Add option for automatically enabling proxy at launch.
• Add option for autosaving of documents.
• Add coloring to hex bytes.
• Add instructions to all tools.
• Fix editor using current system HTTP/HTTPS proxy.
• Several other improvements and bug fixes.
• Update all app dependencies.
• Add large test suite to NIOProxy.

Here's what's new:

• Built with Xcode 26 using a compatibility mode for UI.

Bug fixes and minor improvements.

Here's what's new:

• More efficient HTTP message sorting in memory.
• Improved HTTP data handling in Swift NIO proxy.

Here's what's new:

• Add menu item to follow redirection in Editor.
• Bug fixes.

Here's what's new:

• Add search to JSON tree view.
• Fix issue in copying data to clipboard.

Bug fixes and minor improvements.

Here's what's new:

• Add tree view for JSON data with option to toggle between text and tree view mode.
• Allow following redirection responses in Editor tool.
• Fix default message viewing mode selection.
• Other improvements and bug fixes.
• Update dependencies to latest version.

Here's what's new:

• Add more help links and fix existing links.

Here's what's new:

• Proxygen app has a new website at Proxygen.app.
• Add help buttons that link to documentation on website.
• Add menu item that links to documentation on website.
• Update AppCast URL.

Bug fixes and minor improvements.

Bug fixes and minor improvements.

Bug fixes and minor improvements.

Bug fixes and minor improvements.

Bug fixes and minor improvements.

Proxygen update 3.0 is here! Here's what's new:

• Send iOS device traffic to a paired Mac. Just pair your iOS app with a remote Proxygen Mac app. Then select Send to Mac in the iOS app launch screen to start a remote session with the Mac app. iOS device traffic will be sent to the Mac even when then app is in the background. Intercept and edit requests and responses in the Mac app before they are forwarded by the iOS device. It works like magic.
• Proxygen has an integrated test tool that automates sending of requests. Modify your requests by replacing placeholders with test payloads. Insert numbers, dates or character combinations. Flip bits and bytes. All with the power or tens of parallel worker threads.

Other improvements:

• Redesigned Editor tool which has a rewritten network engine.
• Transform tool has new operations and supports binary data.
• Diff tool now supports both text and binary content.
• Automatic handling of binary messages across the app.
• Reworked keyboard shortcuts across the app.
• Many bugs fixes and performance improvements.

Changes:

• Lifetime purchase option is now available.
• WebSocket traffic inspection does not require a purchase.