Cheolsu Proxy

Spec sheet

Purpose

Cheolsu Proxy is an HTTP/HTTPS debugging proxy for capturing, analyzing, and modifying network traffic in real time.Read 9 Oct 2026 · ohah.github.io

Intended users

The installation guide recommends the desktop GUI as the starting point for most users and describes the TUI as suited to developers who prefer the command line.Read 9 Oct 2026 · ohah.github.io

License

The project is distributed under the MIT and Apache 2.0 licenses.Read 9 Oct 2026 · ohah.github.io

AI integrations

Its MCP Server integrates with AI assistants including Claude Code and Cursor.Read 9 Oct 2026 · ohah.github.io

Available build

The published desktop build is for Apple Silicon (M1/M2/M3/M4); an Intel x64 build is not provided.Read 9 Oct 2026 · ohah.github.io

Download limitation

The published download is an Apple Silicon build, and an Intel x64 build is not provided.Read 9 Oct 2026 · ohah.github.io

Filtering and export

Cheolsu Proxy provides the Cheolsu-Query traffic-filtering language and exports traffic in HTTP Archive 1.2 format.Read 9 Oct 2026 · ohah.github.io

Intercept rules

Its five intercept actions are Block, Modify Request/Response, Map Local, and Map Remote.Read 9 Oct 2026 · ohah.github.io

Interfaces

It provides a desktop GUI, terminal TUI, and MCP Server interface, all powered by the same proxy daemon.Read 9 Oct 2026 · ohah.github.io

Multiple clients

Multiple clients can connect to the same proxy daemon simultaneously.Read 9 Oct 2026 · ohah.github.io

Platform availability

The installation guide lists macOS Apple Silicon as supported; Intel macOS is not built, and Windows and Linux are marked coming soon.Read 9 Oct 2026 · ohah.github.io

Project origin and license

The project says it was forked from Proxelar and is distributed under the MIT and Apache 2.0 licenses.Read 9 Oct 2026 · ohah.github.io

Proxy interfaces

It provides a Tauri desktop GUI, a terminal TUI, and an MCP Server, all powered by the same proxy daemon.Read 9 Oct 2026 · ohah.github.io

Replay and export

Server Replay caches captured responses for identical requests, and the proxy supports HAR export in HTTP Archive 1.2 format.Read 9 Oct 2026 · ohah.github.io

Scripting

JavaScript and TypeScript hooks based on Deno Core can handle requests, responses, and WebSocket traffic.Read 9 Oct 2026 · ohah.github.io

Server replay

Server Replay caches captured responses and automatically returns them for identical requests.Read 9 Oct 2026 · ohah.github.io

Signing status

The current build is not Apple-notarized or signed, and macOS Gatekeeper may block its first launch.Read 9 Oct 2026 · ohah.github.io

System requirements

The installation page lists Apple Silicon macOS as supported, macOS Intel/x64 as not built, and Windows and Linux as coming soon.Read 9 Oct 2026 · ohah.github.io

TLS

The proxy uses a hybrid TLS engine that switches between rustls and native-tls.Read 9 Oct 2026 · ohah.github.io

Upstream proxy

It supports proxy chaining through an upstream proxy with authentication.Read 9 Oct 2026 · ohah.github.io

WebSocket

It supports plain text, Socket.IO, and MQTT detection, with message injection.Read 9 Oct 2026 · ohah.github.io

WebSocket support

It supports WebSocket traffic, including Plain Text, Socket.IO, and MQTT protocol detection and message injection.Read 9 Oct 2026 · ohah.github.io

Where Specifiction places it

• Web Debugging Proxies#23 of 277.5