Debugging
Find and fix bugs, error analysis
Uses and selection guide
Use these skills to move from a reproducible issue or change request to a reviewable patch. Match the language, framework and test runner to your repository; compare the proposed diff and run your own checks before accepting edits.
verification-before-completion
by bobmatnyc
Run verification commands and confirm output before claiming success
systematic-debugging
by bobmatnyc
Methodical debugging instead of random changes
render-debug
by render-oss
Debug failed Render deployments by analyzing logs, metrics, and database state. Identifies errors (missing env vars, port binding, OOM, etc.) and suggests fixes. Use when deployments fail, services won't start, or users mention errors, logs, or debugging.
debug
by Terryc21
'Systematic debugging workflow: reproduce, isolate, hypothesize, verify, fix. Triggers: "debug", "find bug", "fix crash", "why is this broken", "not working".'
scan-similar-bugs
by Terryc21
'After fixing a bug, systematically find other instances of the same pattern. Triggers: "scan for similar bugs", "find other instances", "check for similar issues", "scan similar bugs".'
verification-before-completion
by bobmatnyc
Run verification commands and confirm output before claiming success
mcp-debug
by TechNickAI
"Use when testing MCP servers, debugging MCP tool responses, exploring MCP capabilities, or diagnosing why an MCP tool returns unexpected data"
systematic-debugging
by TechNickAI
"Use when debugging bugs, test failures, unexpected behavior, or needing to find root cause before fixing"
chrome-devtools
by arlenagreer
Chrome debugging and inspection via local CDP Docker container
analyzing-outlook-pst-for-email-forensics
by mukul975
Analyze Microsoft Outlook PST and OST files for email forensic evidence including message content, headers, attachments,
analyzing-packed-malware-with-upx-unpacker
by mukul975
'Identifies and unpacks UPX-packed and other packed malware samples to expose the original executable code for
analyzing-ios-app-security-with-objection
by mukul975
'Performs runtime mobile security exploration of iOS applications using Objection, a Frida-powered toolkit that
analyzing-macro-malware-in-office-documents
by mukul975
'Analyzes malicious VBA macros embedded in Microsoft Office documents (Word, Excel, PowerPoint) to identify download
analyzing-docker-container-forensics
by mukul975
Investigate compromised Docker containers by analyzing images, layers, volumes, logs, and runtime artifacts to
analyzing-email-headers-for-phishing-investigation
by mukul975
Parse and analyze email headers to trace the origin of phishing emails, verify sender authenticity, and identify
analyzing-network-covert-channels-in-malware
by mukul975
Detect and analyze covert communication channels used by malware including DNS tunneling, ICMP exfiltration,
playwright-test
by PostHog
Write a playwright test, make sure it runs, and is not flaky.
react-doctor
by PostHog
Diagnose and fix React codebase health issues. Use when reviewing React code, fixing performance problems, auditing security, or improving code quality.
exploring-llm-traces
by PostHog
Debug and inspect LLM/AI agent traces using PostHog's MCP tools. Use when the user pastes a trace or session URL (e.g. /ai-observability/traces/<id> or /ai-observability/sessions/<id>), asks to debug a trace, figure out what went wrong, check if an agent used a tool correctly, verify context/files were surfaced, inspect subagent behavior, investigate LLM decisions, or analyze token usage and costs. Also use when raw SQL/HogQL against events.properties.$ai_input / $ai_output_choices returns empty — message content lives only on the dedicated posthog.ai_events table.
extending-personhog-test-harness
by PostHog
When and how to add scenarios, chaos events, and invariants to the personhog e2e test harness (rust/personhog-test-harness). Use after fixing a bug or regression in the personhog leader path (leader, router, writer, replica, coordination protocol) so the fix gets a permanent regression scenario; when adding a new failure mode to test (crashes, drains, zombies, lag, failover); or when a new correctness property needs asserting during runs. Trigger terms: personhog gate, chaos scenario, test harness, leader path regression, handoff bug, eviction, writer lag, acked write.
analyzing-expensive-users
by PostHog
Analyze the most expensive users in AI observability and explain why they cost so much. Use when the user asks about top spenders, expensive users, per-user LLM cost, user-level cost drivers, or patterns behind high AI observability spend.
security-audit
by PostHog
Focused security audit of code, calibrated to surface real exploitable bugs and suppress theoretical findings. Use when the user asks to "audit", "security-audit", "find vulnerabilities", "check for IDOR/SSRF/XSS/injection", or wants a security review of a file, directory, branch diff, or PR. Covers access control, injection, auth/secrets, sensitive data, business logic, web boundary, and AI agent/LLM trifecta risks. Produces calibrated findings with data flow, exploit request, fix, and confidence — no theoretical or defense-in-depth nits.
validating-and-publishing-canvases
by PostHog
Validate and publish a canvas source project safely: the source-project shape, declared capabilities, reading the current version pointer, iterating on validation diagnostics, guarded publishing with expected_current_version_id, staging a draft build and promoting it, waiting out the queued build, and recovering from a 409 version_conflict or a 429 capacity limit without overwriting concurrent work. Use whenever a canvas edit is ready to save, a draft build is wanted, a canvas publish or build returns diagnostics or a conflict, or a task needs to understand canvas version history.
debugging-local-task-agent-runs
by PostHog
'Debug the output of local PostHog task runs — the wizard cloud-run path that executes inside a Docker sandbox under the local Temporal process-task workflow (the wizard that integrates PostHog, then the coding agent that commits and opens the PR). Use when a local run looks stuck, failed, or silent, or when you need to read the wizard or agent logs. Covers the .env.local keys + ai_features intent required for cloud runs locally, finding the task UUID (docker ps, temporal CLI, Temporal UI at localhost:8081), tailing live logs inside the sandbox container (/tmp/posthog-wizard.log, /tmp/agent-server.log), and reading the durable per-run console log from object storage after the sandbox is torn down. Trigger terms: task-sandbox, run_wizard, agent-server, process-task, SANDBOX_PROVIDER, LLM_GATEWAY, cloud_run, posthog-wizard.log.'