[adamtagscherer]

issue: vercel-labs/ai-catalog-sdk#45

ai-catalog catalog add now finds a site's catalog using the discovery methods in the AI Catalog spec, so you can pass a domain or a site URL instead of the exact catalog URL.

export AI_CATALOG_CACHE_DIR=$(mktemp -d)

alias ac=./target/debug/ai-catalog

ac catalog add nimblebrain https://bassethound.ai
Fetching catalog from https://bassethound.ai...
Found the catalog at https://bassethound.ai/.well-known/ai-catalog.json (html-link)
✓ "nimblebrain" added (1 entries)

ac catalog add nb nimblebrain.ai
Fetching catalog from nimblebrain.ai...
Found the catalog at https://nimblebrain.ai/.well-known/ai-catalog.json (html-link)
✓ "nb" added (1 entries)

ac catalog list
NAME         URL                                                 ENTRIES  LAST UPDATED          HASH
----------------------------------------------------------------------------------------------------------
nimblebrain  https://bassethound.ai/.well-known/ai-catalog.json        1  2026-10-27T13:30:06   feb95c98
nb           https://nimblebrain.ai/.well-known/ai-catalog.json        1  2026-10-27T13:30:26   06e69ea4

ac catalog update nimblebrain
Updating "nimblebrain"... (up to date)

ac search basset
IDENTIFIER                              NAME  DESCRIPTION                                                   TYPE                              CATALOG
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
urn:air:bassethound.ai:mcp:bassethound  -     -                                                             application/mcp-server-card+json  https://bassethound.ai/.well-…
urn:air:bassethound.ai:mcp:bassethound  -     -                                                             application/mcp-server-card+json  https://bassethound.ai/.well-…

ac catalog add again bassethound.ai
Fetching catalog from bassethound.ai...
Found the catalog at https://bassethound.ai/.well-known/ai-catalog.json (html-link)
error: URL is already registered as "nimblebrain". Use `ai-catalog catalog update nimblebrain` to refresh it.

ac catalog add nope example.com
Fetching catalog from example.com...
error: no AI Catalog found for "example.com"
  https://example.com/ (direct): an HTML page, not an AI Catalog
  https://example.com/.well-known/ai-catalog.json (well-known): HTTP 404
  (there is no local file "example.com" either)

[arpad-csepi]

LGTM, needs linter cleanup