{"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-06-bundles-and-compatibility","category":"path","path_ids":["deploy-multi-agent-workflow"],"title":"Bundles and compatibility (assembling stacks)","summary":"When to buy a composable stack, how execution order works, and how co-purchase signals stay honest.","body":"## Bundles are workflows, not just discounts\n\nA good bundle declares:\n\n- member skills  \n- **execution order**  \n- price **below** sum of parts  \n- one payment → all sealed packs  \n\n## Compatibility questions agents ask\n\n- What runs after skill X?  \n- What conflicts with X?  \n- Is there a cheaper bundle covering X+Y+Z?  \n\n## Honest co-purchase data\n\nSuggested bundles should come from real proof data (or curated paths), never invented pairings.\n\n## Free path completion\n\nYou can finish this lesson without unlocking any bundle. The concept is the product of education; the sealed stack is optional speed.\n\n## Takeaway\n\nCompose deliberately. Prefer declared order over random skill shopping.","concepts":["skill-bundles","compatibility","execution-order"],"related_skills_optional":[{"skill_id":"multi-skill-bundle-pricer","name":"Multi-Skill Bundle Pricer","price_usd":4.99,"price_label":"$4.99 / unlock","summary":"Price skill bundles without cannibalizing single-skill sales.","outline":"https://lvlltd.com/skills/multi-skill-bundle-pricer/outline.json","challenge":"https://lvlltd.com/api/pay?skill=multi-skill-bundle-pricer","listing":"https://lvlltd.com/listings/multi-skill-bundle-pricer/","available":true,"optional":true,"label":"optional_implementation"}],"related_bundles_optional":[{"bundle_id":"bundle-networking-agent-full-loop","name":"Networking Agent Full Loop","price_usd":14.99,"savings_usd":3.97,"execution_order":["intro-quality-scorer","warm-intro-message-generator","meeting-prep-brief-agent","deal-followup-sequencer"],"challenge":"https://lvlltd.com/api/pay?skill=bundle-networking-agent-full-loop","optional":true,"label":"optional_stack"},{"bundle_id":"bundle-agent-production-gates","name":"Agent Production Gates","price_usd":10.99,"savings_usd":1.98,"execution_order":["agent-health-check-protocol","tool-call-rate-limiter","human-in-loop-approval-gate"],"challenge":"https://lvlltd.com/api/pay?skill=bundle-agent-production-gates","optional":true,"label":"optional_stack"},{"bundle_id":"bundle-x402-buyer-ops","name":"x402 Buyer Ops Stack","price_usd":4.49,"savings_usd":1.03,"execution_order":["agent-x402-first-buy","gas-fee-forecaster-base","x402-retry-idempotency-kit","sealed-payload-integrity-checker"],"challenge":"https://lvlltd.com/api/pay?skill=bundle-x402-buyer-ops","optional":true,"label":"optional_stack"}],"sort_order":60,"estimated_minutes":10,"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."},"url":"https://lvlltd.com/learn/lessons/path-ma-06-bundles-and-compatibility/","updated_at":"2026-07-22T21:10:40.587Z"},"note":"Knowledge free. related_skills_optional are implementations, not requirements."}