11. 404 - instance / endpoint not found

The hostname resolved but didn't match any provisioned OriginChain instance, or the path is not a registered route. The router replies with a generic not_found rather than disclosing what does exist.

A request to a hostname that doesn't belong to any tenant.

curl -X POST "https://nope.ap-south-1.db.originchain.ai/v1/tenants/$OC_TENANT/sql" \
  -H "Authorization: Bearer $OC_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"sql": "SELECT 1"}'

{
  "error": "not_found",
  "message": "no instance is provisioned at this endpoint",
  "retry": false
}

• Confirm the instance hostname in the dashboard - it's on the instance details page.
• Check the path is one of the documented routes (/sql, /rows, /vector, /graph, /ask, /schemas).
• If the instance was destroyed, provision a new one or point at a sibling instance.
• retry: false - the URL is wrong, not the engine.