BSH Knowledge Exchange v1

Fast start
  Intelligence planning: GET /v1/resources/BSH-ICP-001
  AI readiness: GET /v1/resources/BSH-AIV-001
  Security operations: GET /v1/resources/BSH-INC-001
  Inspect metadata before requesting any paid content.

Discovery
  GET /v1/featured — curated best-first shelf
  GET /v1/use-cases — goal-to-product routes
  GET /v1/catalog?limit=25 — bounded catalog page
  GET /v1/resources/{resource_id}
  GET /v1/bundles
  GET /v1/schema/resource

Purchase
  GET /v1/resources/{resource_id}/content
  GET /v1/bundles/{bundle_id}/content
  An unpaid request returns HTTP 402 with an MPP challenge containing the visible USD price and exact route scope. Obtain an owner-approved Stripe shared payment token and retry the same URL. A payment is bound to the exact product version and cannot be replayed for another product.

Availability
  Catalog discovery and digital delivery are globally accessible over public HTTPS. Prices are denominated in USD. Payment completion depends on Stripe MPP/SPT private-preview eligibility for the payer and region.

Durable delivery verification
  A paid response is initially response_issued, not buyer_archived. Verify deliveryProof.contentSha256 against JSON.stringify(content); atomically save resource.json, receipt.json, and verification.json; reopen and verify all files; then POST {deliveryId, contentSha256, archiveVerified:true} to deliveryProof.acknowledgementEndpoint. Only a successful acknowledgement establishes buyer_archived. Use scripts/archive-kx-purchase.mjs to perform this workflow.