Anti-Laziness Guard

Stop hook that detects and blocks work-skipping rationalizations at stop time. Fires automatically on every Stop event when the workflow-toolkit plugin is enabled.

How It Works

Three hooks run in parallel every time the agent tries to stop. Any one blocking prevents the stop.

Layer 1: Command Hook (always runs, <1s)

Deterministic regex matching against the agent's last_assistant_message. Detects Tier 1-2 laziness phrases with >75% confidence.

Blocks on phrases like:

• "skip the remaining review stages"
• "in the interest of time"
• "context constraints" / "running low on context"
• "accelerate through the remaining"
• "consolidate the remaining"
• "not worth the complexity"
• "to save time" / "for brevity"

See references/phrase-taxonomy.md for the complete taxonomy with sources.

Layer 2: Prompt Hook (always runs, ~2-3s)

Haiku evaluates the agent's final message for intent-level patterns that regex cannot catch:

1. Premature victory — declaring success while work remains incomplete
2. Offering instead of doing — "Let me know if you'd like me to..." for assigned work
3. Silent omission — summarizing completed work without mentioning skipped items
4. Rationalized shortcuts — framing incomplete work as "a good start" or "sufficient"

Layer 3: Agent Hook (conditional, 10-30s)

Evidence-based deep verification that reads task lists and plan files. Only activates when the flag file exists:

touch .claude/anti-laziness-deep-check

When active, a subagent with Read/Grep/Glob access:

1. Checks ~/.claude/tasks/ and .claude/tasks/ for incomplete tasks
2. Reads plan files in .claude/plans/ and cross-references against the agent's claims
3. Searches the transcript for TodoWrite entries with pending/in_progress status
4. Blocks if it finds incomplete work that the agent didn't acknowledge

Remove the flag file to deactivate: rm .claude/anti-laziness-deep-check

Infinite Loop Prevention

The command hook checks stop_hook_active — if the agent was already blocked by a stop hook and is trying to stop again, it is allowed through. This prevents the hook from blocking indefinitely.

Configuration

Enable/disable the entire hook: Enable or disable the workflow-toolkit plugin in Claude Code settings.

Enable deep verification (Layer 3):

# Before a critical session
touch .claude/anti-laziness-deep-check

# After the session
rm .claude/anti-laziness-deep-check

Disable just the command hook: Not possible without modifying hooks.json. If you experience false positives, please report them so we can refine the phrase taxonomy.

Tier Summary

Background

This hook was designed based on research across 10+ verified GitHub issues (anthropics/claude-code #26691, #21604, #23368, #16506, #1632, #24129, #6159, #8738, #20270, #1113), the Columbia DAPLab "Vibe Coding Needs Policy Enforcement" research, the Cognition/Anthropic "context anxiety" discovery, and analysis of real session logs showing agents using euphemistic language ("accelerate," "consolidate," "streamline") to disguise work-skipping as productivity optimization.