troubleshoot

What problem does it solve? When a Copilot chat agent behaves unexpectedly—slow requests, skipped tools, missing instructions, or failed tool calls—users have no easy way to find the root cause. This Skill investigates session debug logs to explain exactly what happened and why, based on evidence rather than guesswork. ## Core Features & Use Cases - Log-Based Root Cause Analysis: Parses JSONL debug logs (main.jsonl, subagent logs, system prompt and tool snapshots) to trace conversation flow, tool calls, and model requests. - Latency and Error Detection: Identifies slow events, failed tool calls, and discovery issues using grep, jq, Select-String, or Node.js one-liners across platforms. - Network Diagnostics: Runs the github.copilot.debug.collectDiagnostics command to check authentication, connectivity, and proxy configuration when network issues are suspected. - Use Case: A user asks why their custom skill did not load. The Skill searches the session log, finds a name mismatch between the folder and SKILL.md frontmatter, and explains the fix with concrete steps. ## Quick Start Ask the agent why your last Copilot request was slow or why a specific tool was not called, and it will analyze the session debug logs to explain the cause.