How do I install the mcp js debugger mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

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MCP Js Debugger MCP Server

MCP server exposing Chrome DevTools Protocol debugging capabilities

Local serverstdioTypeScript

What is the MCP Js Debugger MCP Server?

MCP server exposing Chrome DevTools Protocol debugging capabilities

What it actually does

An MCP (Model Context Protocol) server that exposes Chrome DevTools Protocol debugging capabilities, enabling AI assistants to debug JavaScript and TypeScript applications.

Connect to any CDP-compatible debugger (Node.js, Chrome, Edge)
Set, list, and remove breakpoints
Step through code (over, into, out)
Inspect call stacks with source map support
Evaluate expressions in any stack frame
View and modify variables

Configuration

Node.js 18.0.0 or later - A CDP-compatible debug target (Node.js, Chrome, Edge, etc.)

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
connect_debugger	Connect to a CDP endpoint via WebSocket URL
disconnect_debugger	Disconnect from a debugging session
set_breakpoint	Set a breakpoint by URL and line number
remove_breakpoint	Remove a breakpoint by ID
list_breakpoints	List all breakpoints in a session
resume_execution	Resume execution after pause
step_over	Step over the current statement
step_into	Step into a function call
step_out	Step out of the current function
pause_execution	Pause running execution
get_call_stack	Get the current call stack with source locations
evaluate_expression	Evaluate a JavaScript expression
get_scope_variables	Get variables in a scope
set_variable_value	Modify a variable's value
set_pause_on_exceptions	Configure exception handling
get_original_location	Map generated to original source location
get_script_source	Get script source code
list_scripts	List loaded scripts

How to install the MCP Js Debugger MCP Server

{
  "mcpServers": {
    "mcp-js-debugger": {
      "command": "npx",
      "args": [
        "mcp-js-debugger"
      ]
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.

Configuration

Node.js 18.0.0 or later - A CDP-compatible debug target (Node.js, Chrome, Edge, etc.)

Example prompts to try

“Use MCP Js Debugger to connect debugger.”
“Use MCP Js Debugger to disconnect debugger.”
“Use MCP Js Debugger to set breakpoint.”

Frequently asked questions

MCP server exposing Chrome DevTools Protocol debugging capabilities Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.