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Include your API key in the X-API-KEY header with every request. Requests without a valid key are rejected with a 401 Unauthorized error. See Authentication for examples in cURL, Python, and Node.js.
Yes. Every endpoint page in this documentation includes an interactive playground. Enter your API key, experiment with parameters, and view live JSON responses directly in your browser.
Pagination is currently available on POST /v1/ucc/debtor and POST /v1/ucc/secured_party. Use the page and per_page parameters (max 50 records per page) and iterate using the pagination metadata in each response. See Pagination for details.
The API responds with a 429 Too Many Requests error, and further requests are temporarily blocked until the time window resets. Rate limits are tracked by client IP address. See Rate Limiting for details.
Most endpoints return errors in a standardized format with error.code, error.message, error.status, and an error.request_id you can reference when contacting support. See Troubleshooting and Error Codes for the full reference.
Yes. LeadX provides bulk endpoints for enriching contacts, finding emails, and finding mobile numbers.
Email info@leadx.com or book a demo to talk with the team. Include the request_id from any error response to help us troubleshoot faster.