Show HN: Shotoku – Local-first action governance and budget caps for AI agents

Shotoku is an open-source, local-first tool that enforces budgets, approval gates and a tamper-evident audit trail for AI agent spending before payments occur, using policy rules in a YAML file and a TypeScript authorize function. It holds no funds or credentials, stores decisions in a local JSONL file, and offers MCP wrapping, signed receipts, and Telegram-based approvals. It is in beta and runs end to end against PayPal's sandbox.