"JSR" matching MCP tools:

• plantuml_versionA

  @plantuml/mcp-jsA

  Retrieve the version of the embedded PlantUML library (TeaVM JS build). Use this to verify the exact PlantUML release powering diagram generation.

  LGPL 3.0

• check_syntaxA

  @plantuml/mcp-jsA

  Validate PlantUML diagram syntax before rendering. Get a clear valid/invalid result, diagram type, line count, warnings, and precise error details with line number when syntax fails.

  LGPL 3.0

• render_diagramA

  @plantuml/mcp-jsA

  Renders PlantUML source into a deterministic SVG, reporting validity, diagram type, and line count. On syntax errors, returns the exact line number, message, and context for quick debugging.

  LGPL 3.0

• explain_diagramA

  @plantuml/mcp-jsA

  Trace how a PlantUML diagram is parsed line by line, receiving a JSON breakdown with source lines, human-readable explanations, and line numbers to debug or learn PlantUML syntax.

  LGPL 3.0

• remove_breakpointA

  JS Reverse MCPA

  Removes a code breakpoint, XHR/Fetch breakpoint, or all MCP-managed breakpoints after confirmation. Use breakpointId or URL pattern to target; removal does not resume a paused page.

  Apache 2.0

  Destructive

• clear_network_requestsA

  JS Reverse MCPA

  Clear captured HTTP(S) request history and cached response bodies for a clean network capture window. Use before reproducing an action to get fresh evidence, while leaving cookies and browser state untouched.

  Apache 2.0

  Destructive

• click_elementA

  JS Reverse MCPA

  Perform one verified, auditable click on a known button or link in the selected frame via CSS selector. Confirmation required to authorize navigation, submission, or external side effects.

  Apache 2.0

  Destructive

• get_paused_infoA

  JS Reverse MCPA

  Inspect the paused call stack, source locations, and variable scopes at a breakpoint or explicit pause to understand where execution stopped and access local values.

  Apache 2.0

• get_websocket_messagesA

  JS Reverse MCPA

  Inspect captured WebSocket connections and frame payloads to debug live-update, push, streaming, or realtime message flows. Group frames by payload pattern to identify message types.

  Apache 2.0

• list_console_messagesA

  JS Reverse MCPA

  Retrieve captured console messages and uncaught errors from the current page to diagnose runtime issues. Filter by message type, paginate, or use a stable ID for focused inspection.

  Apache 2.0

• new_pageA

  JS Reverse MCPA

  Open a URL in a separate browser tab, preserving the current page and existing cookies, storage, and cache. Use this to keep the selected page intact while making the new tab the target for subsequent debugging actions.

  Apache 2.0

• search_in_sourcesA

  JS Reverse MCPA

  Locate JavaScript functions, endpoints, string literals, or code patterns in loaded external, inline, and minified sources without executing or pausing the page, returning precise line numbers.

  Apache 2.0

• select_pageA

  JS Reverse MCPA

  List open browser tabs or pick one as the active target for later debugging tools. Pass a page index to switch the selection, or omit it to view available pages without changing the current choice.

  Apache 2.0

• set_breakpoint_on_textA

  JS Reverse MCPA

  Set a breakpoint directly from a distinctive source code snippet and inspect runtime values at the paused execution. Use URL or occurrence filters to disambiguate when the text matches multiple scripts.

  Apache 2.0

• clear_site_dataA

  JS Reverse MCPA

  Clear cookies, persistent storage, and sessionStorage for the selected page's frames to create a clean replay environment before state-dependent flows like login or session initialization. Requires explicit confirmation to proceed.

  Apache 2.0

  Destructive

• evaluate_scriptA

  JS Reverse MCPA

  Run a focused JavaScript function to inspect DOM state, web storage, page globals, or process a local file during browser debugging.

  Apache 2.0

  Destructive

• get_script_sourceA

  JS Reverse MCPA

  Read the code near a match, paused location, or statement without running or pausing the page. Select by URL to resolve reliably after navigation, or scriptId for inline/eval; use line ranges or offset/length for minified code.

  Apache 2.0

• list_network_requestsA

  JS Reverse MCPA

  Inspect captured HTTP(S) traffic for the current page, filter requests by method or URL, trace cookie-set responses, and export request/response details for replay or signing.

  Apache 2.0

• list_copilot_seatsA

  github-mcp-server-jsB

  List all GitHub Copilot seat assignments in an organization to track user access, including assignee details, access source, and last activity. Requires org owner permissions.

  MIT

• break_on_xhrA

  JS Reverse MCPA

  Set a URL-substring breakpoint on future XHR/Fetch requests to inspect request arguments, local variables, and payload construction. Set before reproducing the action, then step or resume.

  Apache 2.0

• list_breakpointsA

  JS Reverse MCPA

  Retrieve all current code and XHR/Fetch breakpoints to prepare for cleanup or action reproduction. Returns breakpoint IDs and exact URL patterns needed for precise removal.

  Apache 2.0