API reference
The Firmable API
Programmatic access to the leading B2B database - 135M+ contacts across 15M+ companies, enriched with buying signals. Authenticate once and enrich companies and people data directly from your own product.
Base URL — all requests go to
https://api.firmable.com. The full machine-readable index lives at https://docs.firmable.com/llms.txt.The Firmable API is your entry point to the premier AI sales platform. It delivers local verified B2B data for the United States, Canada, Australia, New Zealand, and Asia markets, combined with purchasing signals and AI-driven agents, giving you direct access to decision-makers across the globe.
What you can do
- Enrich a company — look up a full company profile by ID, LinkedIn, domain, or ABN. See Company.
- Enrich a person — resolve a person by ID, LinkedIn, or email. See People.
- Search people in a company — filter by position, seniority, and department. See People Search.
Get started
Three steps to your first call: create an API key, authenticate with a bearer token, then call an endpoint.