List available bundle purchases that can still be used for cards

List active, successful bundle purchases that still have remaining card capacity.

Use this endpoint before creating a card so you can select the correct bundle_purchase_id.

Typical flow:

1. Generate credentials at POST /account/api-access/credentials/rotate.
2. Exchange them at POST /account/api-access/token.
3. Call this endpoint with your bearer token.
4. Pick one returned bundle_purchase_id.
5. Use that purchase id in POST /api/cards.

Example:

curl "$BASE_URL/api/bundle-purchases/available" \
  -H "Authorization: Bearer <access_token>"

Authentication for this endpoint requires this header:

• Authorization: Bearer <access_token>

Generate the bearer token by:

1. rotating credentials at POST /account/api-access/credentials/rotate
2. exchanging them at POST /account/api-access/token