API & MCP — Breaknorm Docs

API & MCP

One product, two doors — the hosted MCP server for agents and the REST API for your code.

Breaknorm is a company database built from the companies’ own websites: what they do, what they sell, who they sell to, size, location, technology — searchable by meaning, not only by keywords.

MCP — https://mcp.breaknorm.co/mcp for Claude, ChatGPT, Cursor and any agent.
REST — https://api.breaknorm.co/v1 for your code.

Both expose the same operations with the same arguments, errors and limits; the MCP tools and the REST endpoints are generated from one definition.

Built for agents

Hand the whole thing to your AI

Authentication, every endpoint, every field, the MCP tools and the rate-limit rules. Paste it into Claude, Cursor or ChatGPT and let it write the integration for you — no copying endpoint by endpoint.

Or point your agent straight at /llms/api.txt · /llms.txt. Both are plain text and always match this site.

You want to…	Use
Find companies by what they do and who they sell to	`search_companies`
Find companies like your best customers	`find_similar`
Know how big a segment is	`count_companies`
Split a list into segments	`segment_companies`
Never see your existing customers again	an exclusion list with always exclude
Get the whole list	`start_export` → `get_job`
Enrich domains you already have	`get_companies`
Find or verify e-mail addresses	`find_email`, `verify_email`, `start_email_job`

Start with the quickstart, or go straight to the tools or the REST reference.