The request is a general 'debugging' query with no named product, language, or platform, so the most direct answer depends on what is being debugged. Sentry is the most broadly applicable option for finding and fixing application errors, with an MCP server, SDK and CLI 1; Microsoft's Playwright MCP Server and debug-session tools help when debugging source files or tests 2; GitHub offers debugging skills such as chrome-devtools and webapp-testing 3.
A question back: What are you debugging: an application error in production, a failing test, a web front end, or an AI/LLM application? Tell me the language or platform and I can narrow this down.
- 1
Sentrysentry.ioverified and signed
Error monitoring that exposes issues, stack traces and breadcrumbs through an MCP server, SDK and CLI to find and fix errors 1.
official:MCP server · @sentry/mcp-serverSDK · @sentry/nodelibrary · debugidCLI · sentry-clipackage · @sentry/junior-amplitude+49 community tools built for it
for agents: sentry · sentry-debug-issue · sentry-instrument
- 2
Microsoftmicrosoft.comfound in code, not yet checked
Offers start_debugging, restart_debugging and stop_debugging actions to run a debug session on a source file or a single test method 2.
official:MCP server · Playwright MCP ServerSDK · markitdownlibrary · windows-sysCLI · playwright-mcppackage · Azure DevOps (ADO)+151 community tools built for it
for agents: start_debugging · restart_debugging · stop_debugging
- 3
GitHubgithub.comverified and signed
Provides debugging skills including chrome-devtools for browser debugging and performance analysis, and webapp-testing for local web app verification 3.
official:MCP server · @github/mcp-registrySDK · @github/copilot-sdklibrary · CodeQL: StubCLI · specifyrepository · copilot-engine-sdk+2,577 community tools built for it
for agents: phoenix-cli · chrome-devtools · webapp-testing
Sources
- 1Sentry Docs | Application Performance Monitoring & Error Tracking Softwaredocs.sentry.io · read 2026-10-29
- 2Microsoft – AI, Cloud, Productivity, Computing, Gaming & Appsmicrosoft.com · read 2026-10-29
- 3GitHub · Change is constant. GitHub keeps you ahead. · GitHub · GitHubgithub.com · read 2026-10-29
For agents: the 10 actions behind this answer
sentry · sentry verified and signed
Sentry error monitoring integration. Access error reports, analyze stack traces, search issues by fingerprint, and debug production errors directly from your development environment.
start_debugging · DebugMCP found in code, not yet checked
Start a debug session for a source file or for a single test method.
phoenix-cli · phoenix-cli verified and signed
Debug LLM applications using the Phoenix CLI. Fetch traces, analyze errors, structure trace review with open coding and axial coding, inspect datasets, review experiments, query annotation configs, and use the GraphQL API. Use whenever the user is analyzing traces or spans, investigating LLM/agent f
ghidra · ghidra verified and signed
Reverse engineer binaries using Ghidra's headless analyzer. Decompile executables, extract functions, strings, symbols, and analyze call graphs without GUI.
nemoclaw-user-monitor-sandbox · nemoclaw-user-monitor-sandbox verified and signed
Inspects sandbox health, traces agent behavior, and diagnoses problems. Use when monitoring a running sandbox, debugging agent issues, or checking sandbox logs. Trigger keywords - monitor nemoclaw sandbox, debug nemoclaw agent issues.
react-doctor · react-doctor verified and signed
Diagnose and fix React codebase health issues. Use when reviewing React code, fixing performance problems, auditing security, or improving code quality.
agents-sdk · agents-sdk verified and signed
Build, debug, or review Cloudflare Agents SDK applications using the agents package.
tracing · langfuse verified and signed
analyzing-mlflow-trace · analyzing-mlflow-trace verified and signed
Analyzes a single MLflow trace to answer a user query about it. Use when the user provides a trace ID and asks to debug, investigate, find issues, root-cause errors, understand behavior, or analyze quality. Triggers on "analyze this trace", "what went wrong with this trace", "debug trace", "investig
debugging-streamlit · debugging-streamlit verified and signed
Debug Streamlit frontend and backend changes using make debug with hot-reload. Use when testing code changes, investigating bugs, checking UI behavior, or needing screenshots of the running app.
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.