# ListSignal MCP documentation

Research date: 2026-09-12

Documentation coverage: partial.

Reference index, not a mirror of complete vendor documentation. Retrieved pages do not prove the MCP works.

## What it does

Query 14M+ online businesses by tech stack, revenue, and hiring signals. REST API + MCP server for AI agents. Free tier: 1,000 lookups/month, no card required.

## Access and connection

MCP support: community

Access requirements: unknown

Authentication: Not recorded

Research checked: 2026-09-12

These details come from catalog research. Check vendor sources for current setup instructions; this is not proof of a tested connection.

## Sources

- https://listsignal.com/developers
- https://listsignal.com/llms.txt
- https://github.com/giushansen/listsignal-mcp

## Retrieved pages

- https://listsignal.com/developers (fetched)
- https://github.com/giushansen/listsignal-mcp (fetched)
- https://github.com/giushansen/listsignal-mcp/issues (fetched)
- https://github.com/giushansen/listsignal-mcp/tags (fetched)
- https://github.com/giushansen/listsignal-mcp/pulse (fetched)
- https://github.com/giushansen/listsignal-mcp/forks (fetched)
- https://github.com/giushansen/listsignal-mcp/blob/master/llms-install.md (fetched)
- https://github.com/giushansen/listsignal-mcp/actions (fetched)
- https://github.com/giushansen/listsignal-mcp/pulls (fetched)