curl --request PUT \
  --url https://api.gravixlayer.com/v1/vectors/indexes/{index_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "metadata": {
    "project": "recommendation-engine-v2",
    "environment": "production",
    "updated_by": "admin"
  },
  "delete_protection": true
}'

{
  "id": "idx-1234567890abcdef",
  "name": "my-embeddings-index",
  "dimension": 1536,
  "metric": "cosine",
  "vector_type": "dense",
  "cloud_provider": "AWS",
  "region": "us-east-1",
  "index_type": "serverless",
  "metadata": {
    "project": "recommendation-engine-v2",
    "environment": "production",
    "updated_by": "admin"
  },
  "delete_protection": true,
  "updated_at": "2025-10-15T12:34:56Z"
}