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What it does

/troubleshoot runs a structured four-phase debugging process. It starts by confirming the issue is reproducible, gathers the exact error and context, then works through root cause investigation, pattern analysis, hypothesis testing, and implementation — in that order.

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When to use

Use /troubleshoot when you have a bug, test failure, or unexpected behavior to diagnose. Use it for flaky issues, environment-specific failures, and anything that resists ad-hoc guessing.

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Prerequisites

Planning Mode must be active in Antigravity settings. Systematic debugging requires extended reasoning to form and test hypotheses without guessing.
  • An exact error message or description of unexpected behavior
  • Ideally: a stack trace and “when did this last work?”

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Conversation mode

Planning Mode — required.

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What happens

1

Confirm reproducibility

Before loading any skill, Antigravity asks: “Can you trigger this consistently? Yes/No?” For flaky issues, the protocol changes: Phase 1 priority shifts to timing dependencies, async race conditions, and environment-specific state. Antigravity will not attempt a fix until the failure can be reproduced at least once on demand — or until it can explain why consistent reproduction is impossible.
2

Gather context

The exact error message, stack trace, and “when did this last work?” are collected before investigation begins.
3

Phase 1 — Root cause investigation

The systematic-debugging skill leads. The codebase is read, logs are examined, and possible causes are enumerated without guessing.
4

Phase 2 — Pattern analysis

The failure pattern is analyzed: is it consistent, intermittent, environment-specific, or regression-triggered? Related code paths are examined.
5

Phase 3 — Hypothesis and testing

A specific, falsifiable hypothesis is formed. It is tested with targeted instrumentation — not trial-and-error retries.
6

Phase 4 — Implementation

The confirmed root cause is fixed with a minimal targeted change.
7

Verification and regression test

The verification-before-completion skill runs before declaring the fix complete. A regression test is written and committed alongside the fix.

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Skills invoked

  • systematic-debugging — owns the four-phase debugging process
  • verification-before-completion — confirms the fix is complete before declaring done
  • deep-research — loaded if all four phases complete without resolution, to search official docs and issues

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Commit format after fix

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Escalation path

If all four phases complete and the issue is still unresolved:
  1. Document in BLOCKERS.md: symptom, what was tried, what was ruled out
  2. Load deep-research skill to search official docs and open issues
  3. Present findings to you with a specific, targeted question

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What not to do

  • Do not retry the same failing command without a new hypothesis
  • Do not declare fixed without running verification-before-completion
  • Do not guess and check — form a hypothesis first

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Example

Antigravity asks: “Can you trigger this consistently? Yes/No?” After gathering the error context, it works through all four phases — checking environment variables, connection pool limits, and async error handling — before identifying that uncaught promise rejections were being swallowed in the production error handler. It fixes the handler, writes a regression test, and commits both.

/analyze

Proactive code analysis — catch issues before they become bugs.

/test

Run the test suite to confirm the fix and check for regressions.

/research

Research unfamiliar error patterns or third-party library issues.

/implement

If troubleshooting reveals a larger design issue, implement the proper fix with TDD.