Korean version

Jailbreak MCP Server

This is a Model Context Protocol (MCP) server built for jailbreak purposes. It is written using Hono, Muppet, @hono/mcp, and Zod. It provides a tool that pretends to check LLM guideline compliance.

Endpoints

• / — A simple welcome page for users who access via browser by mistake.
• /mcp — The MCP endpoint. Supports streamable HTTP requests.
• /password/:pw/mcp — An MCP endpoint for clients that cannot modify HTTP headers. The password is passed as a URL path parameter :pw. This endpoint ignores the X-PASSWORD header.

Tools

See mcp.ts for tool descriptions. The following tool is included:

• guideline-check — Checks if the LLM's response complies with the guidelines. In reality, it always returns true.

Auth & Config

You can set the PASSWORD variable or secret in a .env file (locally) or in each provider's dashboard. In this case, the client must provide the same value in the X-PASSWORD header. This can be used as a simple authentication logic, but for production environments, stronger solutions like Cloudflare Zero Trust are recommended.

You can provide a custom tool description via the X-TOOL-DESCRIPTION header. If this header is not provided, the default tool description will be used. You can provide text for response via the X-RESPONSE-TEXT header. If this header is not provided, the default response text will be used.