Investigate
Find the root cause of Elixir/Phoenix bugs, crashes, exceptions, stack traces, compile...
Install
npx skills add oliver-kriska/claude-elixir-phoenix --skill investigate -g -a claude-code -y- Repository
- oliver-kriska/claude-elixir-phoenix572
- Category
- Engineering
- Updated
- 5d ago
- License
- MIT
- Context cost
- Lightabout 1,322 tokens
- Runs scripts
- No, instructions only
What it does
Find the root cause of Elixir/Phoenix bugs, crashes, exceptions, stack traces, compile errors, LiveView that won't update, silent failures. Use when something is broken or misbehaves. --parallel for 4 tracks.
Investigate Bug
Investigate bugs using the Ralph Wiggum approach: check the obvious, read errors literally.
Usage
/phx:investigate Users can't log in after password reset
/phx:investigate FunctionClauseError in UserController.show
/phx:investigate Complex auth bug --parallel
Arguments
$ARGUMENTS = Bug description or error message. Add --parallel
for deep 4-track investigation.
Mode Selection
Use parallel mode (spawn deep-bug-investigator) when:
bug mentions 3+ modules, spans multiple contexts, is intermittent
or involves concurrency, or user says --parallel/deep.
Before spawning it, determine the effective maximum nesting depth. Use an
explicit positive-integer CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH value first;
when it is unset, inspect claude --version (the default is 1 in 2.1.217, 2.1.218
and 3 in 2.1.219+). If the version is unavailable, conservatively use 1. At
depth 3+, use the deep-bug-investigator orchestrator. At depth 1 or 2, keep
orchestration in this main session: spawn the four
focused tracks (reproduction, root cause, impact, fix strategy) directly in
one parallel batch, wait for all four, then synthesize their evidence. Never
spawn an orchestrator that cannot delegate.
Otherwise: Run the sequential workflow below.
Avoid confirmatory subagents: once Steps 3-4 identify the root cause with high confidence, present it directly, four subagents (~80K tokens) re-verifying a finding already made in this context add cost, not evidence.
