Common causes and solutions for API errors:

1. Authentication Issues:

• Verify API key format and validity

• Check API key is being passed correctly in headers

• Ensure API key hasn't expired

• Confirm proper Authorization header format (Authorization: <API_KEY>)
  
  

2. Rate Limiting:

• Watch for 429 status codes

• Implement proper retry logic

• Space out requests appropriately

• Consider upgrading plan if consistently hitting limits
  
  

3. Request Format:

• Validate JSON syntax

• Check required fields are present

• Ensure proper content-type headers

• Verify endpoint URLs are correct