Brian Kuan wrote halo-record, a small Python package that sits inside an AI agent and writes down the moves it makes: tool calls, model calls, data access, approvals. Each action becomes one line in a file that only ever gets appended to, and every line carries a hash of the line before it, a hash being a short fingerprint computed from content. Edit a record later and every fingerprint after it stops matching. The code … More →

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