The guardrail layer of Kete, extracted as a standalone open-source tool (Apache-2.0 / MIT). Ārai parses your instruction files into structured rules, runs as an MCP server so agents can author their own guardrails mid-session, and logs every firing locally so you can inspect what rules fired, on which tools, for which prompts — all running on your machine, no hosted service required.
- Static (AST/regex) code extraction — no LLM cost
- Instruction files → structured, queryable rules
- Pre-flight guardrail enforcement via Claude Code hooks
- MCP server — agents register their own rules mid-session
- Local audit log of every firing (JSONL, no network egress)
- Apache-2.0 / MIT — free for internal and commercial use