hammertime

Installation
SKILL.md

HammerTime — Behavioral Rule System

Rules live at ~/.claude/hammertime/rules.json. The hook registers as a Stop hook and fires on every assistant turn.

Two rule types:

  • Content rules — scored detection against response text (three-layer scoring + optional Haiku verification)
  • Timer rules — time-based blocking until a deadline passes (no scoring, no Haiku)

When to Create a Rule

Recognize rule intent even when the user doesn't say "hammertime":

Imperative patterns:

  • "Always fix lint errors before stopping"
  • "Never say 'everything looks good' when there are warnings"
  • "Stop summarizing what you did at the end"
  • "From now on, run tests before committing"
  • "I want you to use the visual planner for architecture decisions"
  • "Don't dismiss issues as pre-existing"
Related skills

More from b-open-io/prompts

Installs
6
GitHub Stars
12
First Seen
Mar 16, 2026