Lookup item

Resolve a single indexed item using either a URN or a slug.

Use this when opening an item detail page from a stable identifier.

Behavior:

• Accepts query parameters for urn or slug.
• Returns the matched indexed item document when found.
• Returns 404 when no matching item exists.

Good to know:

• 200 and 404 responses are both cacheable for a short period, which helps repeated lookups.