JS REVERSE MCP TOOLS

22 tools from the JS Reverse MCP MCP Server, categorised by risk level.

// ALL 22 JS REVERSE MCP TOOLS

READ 11 tools

Read get_paused_info Gets information about the current paused state including call stack, current location, and scope variables... Read get_request_initiator Gets the JavaScript call stack that initiated a network request. This helps trace which code triggered an A... Read get_script_source Gets a small snippet of a JavaScript script source by URL (recommended) or script ID. Supports line range (... Read get_websocket_messages Lists WebSocket connections or gets messages for a specific connection. Without wsid, lists all connections... Read list_breakpoints Lists active code breakpoints and XHR/Fetch URL breakpoints in the current debugging session. Breakpoints a... Read list_console_messages List all console messages for the currently selected page since the last navigation. Pass msgid to get a si... Read list_network_requests List network requests for the currently selected page. By default this includes requests retained from befo... Read list_scripts Lists all JavaScript scripts loaded in the current page. Returns script ID, URL, and source map information... Read search_in_sources Searches for a string or regex pattern in all loaded JavaScript sources. Returns matching lines with script... Read take_screenshot Take a screenshot of the currently selected page. By default captures the visible viewport; set fullPage=tr... Read select_page Lists all open pages in the browser. Pass pageIdx to select a page as context for future tool calls.

WRITE 2 tools

Write save_script_source Saves the full source code of a JavaScript script to a local file. PREFERRED over get_script_source wheneve... Write select_frame Lists all frames (including iframes) in the current page. Pass frameIdx to switch the execution context use...

DESTRUCTIVE 2 tools

Destructive clear_site_data Clear browser state to create a clean replay environment for the currently selected page. This clears cooki... Destructive remove_breakpoint Removes breakpoints. Pass breakpointId to remove a code breakpoint, url to remove an XHR breakpoint, or nei...

EXECUTE 7 tools

Execute navigate_page Navigates the currently selected page to a URL, or performs back/forward/reload navigation. This tool only ... Execute new_page Opens a browser page and navigates to the specified URL. If an existing about:blank startup tab is still av... Execute break_on_xhr Sets a breakpoint that triggers when an XHR/Fetch request URL contains the specified string. Execute evaluate_script Evaluate a JavaScript function inside the currently selected page. Returns the response as JSON so returned... Execute step Steps JavaScript execution. Use direction Execute pause_or_resume Toggles JavaScript execution. If paused, resumes execution. If running, requests a pause at the next JavaSc... Execute set_breakpoint_on_text Sets a breakpoint on specific code (function name, statement, etc.) by searching loaded scripts and automat...

// FAQ

How many tools does the JS Reverse MCP MCP server have? +

The JS Reverse MCP MCP server exposes 22 tools across 4 categories: Read, Write, Destructive, Execute.

How do I enforce policies on JS Reverse MCP tools? +

Route the JS Reverse MCP server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do JS Reverse MCP tools fall into? +

JS Reverse MCP tools are categorised as Read (11), Write (2), Destructive (2), Execute (7). Each category has a recommended default policy.

Enforce policy on every JS Reverse MCP tool call.

Start from JS Reverse MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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