Binary Ninja Cline MCP Server

Instructions

Implementation Reference

• bridge/bn_mcp_bridge_stdio.py:67-72 (handler)

  FastMCP stdio bridge handler for the decompile_function tool. Proxies the function name via HTTP POST to localhost:9009/decompile for decompilation by Binary Ninja server.

  @mcp.tool()
  def decompile_function(name: str) -> str:
      """
      Decompile a specific function by name and return the decompiled C code.
      """
      return safe_post("decompile", name)

• bridge/bn_mcp_bridge_http.py:368-385 (handler)

  FastMCP SSE bridge handler for the decompile_function tool. Proxies the function name via HTTP POST to localhost:9009/decompile, with error handling and JSON normalization.

  @mcp.tool()
  def decompile_function(name: str):
      """
      Decompile a function by exact name.
      """
      try:
          if not name or not name.strip():
              return {"ok": False, "error": "Function name cannot be empty"}
  
          data, err = _request("POST", "decompile", data=name.strip())
          if err:
              return {"ok": False, "error": err}
          # Normalize to JSON
          code = data if isinstance(data, str) else json.dumps(data)
          return {"ok": True, "code": code}
      except Exception as e:
          logger.error(f"Error in decompile_function: {e}")
          return {"ok": False, "error": str(e)}

• binaryninja-mcp-bridge.js:99-102 (schema)

  Input schema definition for decompile_function tool (requires path and function params) in the JS MCP bridge's list_tools handler.

    name: "decompile_function",
    description: "Decompile a function to C",
    inputSchema: zodToJsonSchema(FunctionSchema),
  }

• binaryninja-mcp-bridge.js:164-173 (handler)

  Handler case in JS MCP bridge's call_tool for decompile_function: validates arguments with Zod schema and proxies JSON-RPC call to Binary Ninja HTTP server.

  case "decompile_function": {
    try {
      const args = FunctionSchema.parse(request.params.arguments);
      result = await callBinaryNinjaServer("decompile_function", args);
    } catch (error) {
      console.error(`[ERROR] Failed to parse arguments for decompile_function: ${error.message}`);
      console.error(`[ERROR] Arguments received: ${JSON.stringify(request.params.arguments)}`);
      throw error;
    }
    break;

• binaryninja_mcp_http_server.py:70-81 (schema)

  Explicit JSON schema for decompile_function tool registered in MCP_TOOLS list for the HTTP MCP server.

      "name": "decompile_function",
      "description": "Decompile to C",
      "streaming": False,
      "inputSchema": {
          "type": "object",
          "properties": {
              "path": {"type": "string"},
              "function": {"type": "string"}
          },
          "required": ["path", "function"]
      }
  },