Loop Engineering You Can Actually Run

Bounded Loops is a runnable harness for loop engineering. A runner proposes a change each lap; an independent gate such as pytest, JSON Schema, a command, or a security scanner verifies it; and a hexagonal engine repeats under nine enforced bounds plus an environment kill switch until the gate passes or a bound trips. The engine never trusts the agent's own claim of "done"—only the gate decides. Version 0.3.1 ships 68 loop folders across finance, legal, retail, operations, enterprise/ERP, security, testing, content, research, business, healthcare, and software. Of those, 64 run keyless out of the box; four framework examples use optional dependencies. The repository includes a deterministic three-lap convergence demo, a real Codex receipt, native plugins, clean-room release gates, and explicit credit to the prior work it builds on.