Arai
Arai enforces AI coding assistant instruction files (CLAUDE.md, AGENTS.md, .cursorrules, and others) via native hooks. Rules derived from prohibitive language block the tool call outright; advisory rules inject the relevant constraint at the point it applies.
Quick Start
curl -sSf https://arai.taniwha.ai/install | sh
cd your-project
arai initThat's it. Arai discovers your instruction files, extracts the rules, classifies their intent, scans your codebase for context, and sets up native hooks so guardrails fire at the right moment.
What It Does
When your AI coding assistant (Claude Code or Grok TUI) is about to do something your rules cover, Arai injects the relevant guardrail — right when it matters. Rules derived from prohibitive predicates (never, forbids, must_not) actually block the tool call instead of just advising.
You: "Create a new database migration"
PreToolUse: Write migrations/versions/001_add_users.py
→ Arai: deny
reason: "Alembic never: hand-write migration files"
[from your rules:12, layer-1 imperative]
Assistant: "I should use alembic revision --autogenerate instead..."
