{"ok":true,"kind":"lesson","integrity":{"knowledge":"free","capability":"paid_x402_optional","rule":"Every concept on a path is fully teachable without purchase. Skills are optional implementations, never required reading.","display":"Learn free. Buy only if you want a ready-to-run sealed pack."},"lesson":{"schema_version":"lvl-knowledge-lesson-v1","id":"path-ma-04-human-in-the-loop","category":"path","path_ids":["deploy-multi-agent-workflow"],"title":"Human-in-the-loop before irreversible actions","summary":"Spend, outbound messages, and deploys need structured approval — not vibes.","body":"## Irreversible actions\n\n- Spending USDC  \n- Sending email/DM as a human  \n- Writing production state  \n\n## Approval design\n\n- Payload hash of what will happen  \n- TTL so approvals expire  \n- Deny is first-class  \n- Timeout must **not** auto-approve  \n\n## Takeaway\n\nAutonomy without gates is a liability. HITL is how agent products stay shippable.","concepts":["hitl","approval-gate","least-agency"],"related_skills_optional":[{"skill_id":"human-in-loop-approval-gate","name":"Human-in-the-Loop Approval Gate","price_usd":5.99,"price_label":"$5.99 / unlock","summary":"Block irreversible agent actions until a human signs a structured approve payload.","outline":"https://lvlltd.com/skills/human-in-loop-approval-gate/outline.json","challenge":"https://lvlltd.com/api/pay?skill=human-in-loop-approval-gate","listing":"https://lvlltd.com/listings/human-in-loop-approval-gate/","available":true,"optional":true,"label":"optional_implementation"}],"sort_order":40,"estimated_minutes":8,"last_updated":"2026-07-22T12:00:00.000Z","freshness":{"last_updated_at":"2026-07-22T12:00:00.000Z","days_since_update":0,"band":"fresh","score_0_100":95,"label":"Fresh","display":"Fresh · updated 2026-07-22 (0d ago)"},"integrity":{"knowledge_free":true,"skills_optional":true,"note":"This lesson is complete without purchasing any skill."},"related_bundles_optional":[],"url":"https://lvlltd.com/learn/lessons/path-ma-04-human-in-the-loop/","updated_at":"2026-07-22T21:10:40.587Z"},"note":"Knowledge free. related_skills_optional are implementations, not requirements."}