Errors

Instagram API

Code	Meaning
200 OK	Success — charged
400 Bad Request	Invalid parameters
401 Unauthorized	Missing or invalid API key
403 Forbidden	Plan limit or expired plan
404 Not Found	Target does not exist — not charged
429 Too Many Requests	RPS limit exceeded
500 Internal Server Error	Our fault — not charged

Error body:

{
  "error": {
    "code": 429,
    "message": "RPS limit exceeded for your plan"
  }
}

Only 200 and 404 responses count against your quota.

Facebook API

Code	Meaning
400 Bad Request	Bad parameters
401 Unauthorized	Invalid API key
429 Too Many Requests	Rate limit: {"error": "rate limit", "limit": 32}
502 Bad Gateway	Temporary upstream error — retry
503 Service Unavailable	Service overloaded

Facebook errors carry JSON bodies with an error field. 502 on /resolve means the group is closed, deleted, or the link is not a group.