setup-agent-config

name	setup-agent-config
description	Token-efficient AI agent hooks -- env vars, test flag optimization, output truncation, NODE_OPTIONS. Use when optimizing Claude Code for fewer tokens or reducing context waste.

Setup LLM Optimization

What This Sets Up

• SessionStart: AI_AGENT=1, CLAUDECODE=1, NODE_OPTIONS=--max-old-space-size=8192
• UserPromptSubmit: inject project state (git branch, dirty files, scripts, violations, config) -> Claude know state, no tool calls
• PreToolUse (Bash): optimize vitest commands -- strip --verbose, suggest --pool=forks, --bail=1, --teardownTimeout=5000. Also handle jest/bun test (back-compat)
• PostToolUse (Bash): truncate verbose output, cut context bloat

Steps

1. Copy scripts/llm-env.sh, scripts/llm-test-flags.sh, scripts/llm-truncate.sh -> .claude/hooks/. chmod +x.
2. Configure in .claude/settings.json:
   • SessionStart: llm-env.sh
   • PreToolUse (Bash): llm-test-flags.sh
   • PostToolUse (Bash): llm-truncate.sh

Verify

• AI_AGENT/CLAUDECODE set after session start
• vitest --verbose rewrite to vitest
• Long output truncated

See REFERENCE.md for vitest config optimizations.