Breaknorm documentation
Every company on the web, ready for your agent.
41.5 million companies, described from their own websites — searchable by what they do and who they sell to. Use it from Claude, ChatGPT or Cursor through the MCP server, or from your own code over REST.
Claude · ChatGPT · Cursor
Connect your agent→
One URL, sign in once, and your agent can search, count, find lookalikes and export — in the conversation.
Exclusions
Keep your customers out→
Upload your CRM once, mark it always exclude, and it never comes back in any search, count or export.
REST · 5 minutes
API quickstart→
Create a key, size a segment, exclude your customers and export the full list — with curl.
Reference
Every endpoint and tool→
Parameters, costs, request examples and real responses — generated from the server itself.
Popular topics
Your first search
Describe the business, then narrow it.
Find & verify e-mails
From a name and a domain, or by the file.
How the allowance works
One allowance, 5-hour and weekly windows.
Coverage
41.5 million companies, country by country.
MCP tools
The 19 tools your agent sees.
I hit a limit
What each message means, what to do.
Built for agents
Hand the whole thing to your AI
Every page — API reference, MCP server and help centre. 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-full.txt. Both are plain text and always match this site.