Register a Catalog in the Portolan Registry

You are helping a user add their Portolan catalog to the portolan-registry by opening a pull request. The registry crawls and validates submitted catalogs, then exports their metadata. (Portolan uses STAC to organize its catalog.json, but a Portolan catalog is its own thing — don't call it a STAC catalog.)

Key fact: submitters provide only the URL

A registry entry is a single YAML file with one field:

url: https://example.com/stac/catalog.json

CI auto-extracts everything else (title, description, bbox, license, counts, etc.) by crawling the catalog. Never add other fields or invent metadata — the schema forbids it (additionalProperties: false).

Step 1: Validate the catalog URL

The URL must end in catalog.json and point to a reachable Portolan catalog root.

curl -fsSL "$CATALOG_URL" | python3 -c "
import sys, json
c = json.load(sys.stdin)
assert c.get('type') == 'Catalog', f\"not a catalog root (type={c.get('type')})\"
print('OK:', c.get('id'), '-', c.get('title', '(no title)'))
"

If the URL doesn't end in catalog.json, isn't reachable, or isn't a catalog root, stop and tell the user. Do not proceed with an invalid entry.

Step 2: Derive the slug

The slug is the directory that contains catalog.json — the last path segment before the filename. No need to invent one.

# .../source-coop/nlebovits/ide-pergamino/catalog.json  ->  ide-pergamino
SLUG=$(basename "$(dirname "$CATALOG_URL")")
echo "$SLUG"

The file will be catalogs/$SLUG.yaml.

Step 3: Open the PR

Use gh to fork (if needed), branch, add the file, and open the PR — all without leaving the working directory:

# CATALOG_URL and SLUG carry over from the steps above

# Fork (no-op if already forked) and clone to a temp dir
TMP=$(mktemp -d)
gh repo fork portolan-sdi/portolan-registry \
  --clone "$TMP/portolan-registry" --remote
cd "$TMP/portolan-registry"

# Create the entry on a new branch
git checkout -b "add-$SLUG"
printf 'url: %s\n' "$CATALOG_URL" > "catalogs/$SLUG.yaml"
git add "catalogs/$SLUG.yaml"
git commit -m "Add $SLUG catalog"
git push -u origin "add-$SLUG"

# Open the PR against the upstream repo
gh pr create \
  --repo portolan-sdi/portolan-registry \
  --title "Add $SLUG catalog" \
  --body "Registers \`$CATALOG_URL\` in the Portolan registry."

Step 4: Report

Give the user the PR URL (printed by gh pr create) and explain that CI will crawl and validate the catalog, then export its metadata to exports/catalogs.json once merged.

Alternative: web submission

If the user prefers not to use GitHub, they can submit the same catalog.json URL through the web form at portolan-sdi.org.