pyobfus — Python Obfuscator MCP Server

@zhurong2020

Basic information

About pyobfus — Python Obfuscator MCP Server

Obfuscate Python & reverse-map stack traces from your agent. AST-based, no phone-home. PyArmor alt.

#python#obfuscation#code-protection#security#pyarmor-alternative

pyobfus — Python Obfuscator MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "pyobfus": {
      "command": "uvx",
      "args": [
        "pyobfus-mcp"
      ]
    }
  }
}

pyobfus — Python Obfuscator MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is pyobfus — Python Obfuscator?

pyobfus is an AST-based Python obfuscator MCP server that lets AI agents (Claude Code, Cursor, Windsurf, Zed) protect Python source code end-to-end from a conversation. It serves as an open-source, no-phone-home alternative to PyArmor.

How to use pyobfus — Python Obfuscator?

Install via uvx pyobfus-mcp or pip install pyobfus-mcp. No API key is required. Once installed, an AI agent can call any of the 8 built-in tools to obfuscate projects, scan risks, generate configs, or reverse obfuscated tracebacks.

Key features of pyobfus — Python Obfuscator

AST-based obfuscation with no phone-home.
8 tools including protect_project, check_obfuscation_risks, and unmap_stack_trace.
All tools return structured JSON with ai_hint and next_tool for deterministic chaining.
Preflight risk scanning for eval/exec, dynamic attributes, and framework reflection.
Auto‑generates pyobfus.yaml based on detected framework.
Open‑source alternative to PyArmor with no API key required.

Use cases of pyobfus — Python Obfuscator

Obfuscate a complete Python project and verify it still runs in one MCP call.
Scan a project for obfuscation risks before applying protection.
Auto‑generate configuration files tuned to the project’s framework.
Debug deobfuscated stack traces from obfuscated code during development.

Frequently asked questions

How does pyobfus compare to PyArmor?

pyobfus is an open-source, AST-based obfuscator that does not phone home, making it a transparent alternative to PyArmor.

Does pyobfus require an API key?

No, pyobfus does not require any API key.

How do I install pyobfus?

Install using `uvx pyobfus-mcp` or `pip install pyobfus-mcp`.

What tools does pyobfus provide?

It provides 8 tools: `protect_project`, `check_obfuscation_risks`, `generate_pyobfus_config`, `unmap_stack_trace`, `list_presets`, `explain_preset`, `recommend_tier`, and `start_pro_trial`.

What format do the tools return?

All tools return structured JSON that includes an `ai_hint` and a `next_tool` field for deterministic chaining of operations.

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