Cheolsu Proxy
Cheolsu Proxy: A macOS-focused proxy with deep traffic controls and AI-assistant integration. Ranked #13 of 27 in Web Debugging Proxies by our editors (8.0/10); pricing: Open source; best for macOS developers using AI-assisted debugging.
At a glance
- Editor score8.0 / 10
- PricingOpen source
- Best formacOS developers using AI-assisted debugging
- Paid fromNone
- Facts checked20 Sep 2026
Where it wins
- Interactive breakpoints, request editing, and response modification
- WebSocket inspection with message injection and protocol detection
- MCP server integrates with Claude Code, Cursor, and Claude Desktop
Where it doesn't
- Current installation documentation lists only an Apple Silicon macOS build
- Windows and Linux builds are marked as coming soon
- Its wide feature set is focused on developer debugging workflows
Our verdict on Cheolsu Proxy
Cheolsu Proxy is an open-source debugging proxy for developers who need to inspect, intercept, modify, and replay HTTP, HTTPS, and WebSocket traffic. It is aimed especially at macOS developers working with AI-assisted debugging, with a desktop GUI, terminal interface, and MCP server included in the project. The proxy covers both request and response workflows, making it suitable for investigating application behavior, testing traffic changes, and examining real-time messages.
Its standout capability is the depth of traffic control in a single tool. Developers can use interactive request and response breakpoints, automatic intercept rules, saved-response server replay, and TypeScript traffic scripting. WebSocket inspection and message injection extend the workflow beyond standard HTTP debugging, while Socket.IO and MQTT protocol detection help identify related traffic. HAR export supports sharing or retaining captured sessions. Upstream proxy chaining with authentication support adds flexibility for environments that route traffic through another proxy.
The main product decision is platform fit. The published installation documentation currently lists an Apple Silicon macOS build, while Windows and Linux builds are marked as coming soon. For compatible macOS systems, the combination of GUI, terminal access, and MCP integration fits developers who want conventional proxy controls alongside Claude Code, Cursor, or Claude Desktop workflows. Teams seeking a cross-platform deployment today should choose an alternative. Cheolsu Proxy is also more specialized than a general-purpose API client: its value is concentrated in debugging live traffic, replaying responses, editing requests, and working with AI assistants through MCP.
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Cheolsu Proxy pricing
Cheolsu Proxy fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | None |
| Platforms | Not verified |
| Request/response editing | Yes |
| Breakpoint rules | Yes |
| Traffic replay | Yes |
| Response mocking | Yes |
| WebSocket inspection | Yes |
| Proxy chaining | Yes |
| Deployment | Desktop |
| Platforms | macOS |
| Support | Docs, Community |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 4 integrations: Claude Code, Cursor, Claude Desktop, MCP |
| Pricing | Open source |
| Website | ohah.github.io |
| Facts checked | 20 Sep 2026 |
Cheolsu Proxy integrations
Cheolsu Proxy lists 4 integrations on its own site.
- Claude Code
- Cursor
- Claude Desktop
- MCP
Alternatives to Cheolsu Proxy
- mitmproxyA broad, programmable proxy for debugging HTTP, HTTPS, WebSockets, and related traffic.9.4
- FluxzyA broad debugging proxy with a capable free personal tier and €49 perpetual Pro access.9.3
- HTTP ToolkitA broad HTTP debugging proxy for teams working across browsers, apps, containers, and APIs.9.2
See all Cheolsu Proxy alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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