# SKU.md v0.10 Publisher Guide

Publish the root catalog Manifest at the exact HTTPS `/sku.md` URL declared by its `canonical` field. Serve every SKU.md document directly with HTTP 200, no redirects, and `Content-Type: text/markdown`.

Validate syntax, the Publisher Schema, semantics, canonical equality, same-origin graph links, and Markdown body parity before publishing. Product facts require reviewed source evidence. Prices, availability, shipping, tax, totals, and payment remain dynamic commerce state and must not be asserted as durable Knowledge.

For larger catalogs, the root may declare Markdown partition entrypoints. Partitions may declare Markdown Product Document entrypoints. Keep each `parent` chain same-origin and terminating at the root. Non-Markdown indexes can aid general discovery, but they are outside the bounded SKU.md graph verified by the Conformance service.

Publishing is performed by the publisher's own hosting system. The Conformance service is read-only and never writes, deploys, or changes a storefront.