API Key & Account Access
Why is 'Developer Tools' greyed out or missing?
I lost my API key. How can I view it again?
Why am I seeing an error when creating a new API key?
API Authentication & Authorization (Scopes)
What does a 401 Unauthorized error mean?
What does a 403 Forbidden (INSUFFICIENT_PERMISSIONS) error mean
Endpoint-Specific API Troubleshooting
Why Does My Bulk Domain or TLD Search API Request Fail?
Why Does My Bulk Domain Search Return an invalid Array?
Why Does the API Return 404 NOT_FOUND for a Domain That Exists?
Why did the API return 422 VALIDATION_ERROR for my web forwarding request?
Why Does the DNS Records Endpoint Return an Empty Array or Error?
General API Rate Limiting & Errors
Why did I receive a 429 Rate Limit Exceeded error from the API?
What does a 500 SERVER_ERROR mean, and what should I do next?
MCP Server & AI Client Troubleshooting
What Should I Do If My MCP Client Cannot Connect to the 101domain MCP Server?
What Causes 429 Rate Limit Errors in My n8n or Zapier MCP Workflow?
How Can I Stop My AI Agent from Making Unintended Changes to Domains or DNS?
Why is my AI tool returning UNAUTHORIZED errors after using my 101domain API key?