Coresignal
Access comprehensive B2B data on companies, employees, and job postings for your LLMs and AI workflows.
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Overview
The official Model Context Protocol server for Coresignal — bring fresh B2B data on 895M+ employees, 70M+ companies, and 468M+ job postings straight into your AI assistant. Search in plain natural language, pull full records, enrich contacts with verified emails, and export large result sets as downloadable files — all from Claude, Cursor, Codex, VS Code, or any other MCP-compatible client. - OAuth 2.1 authentication — sign in with your Coresignal dashboard account; no API keys in config files. - Natural-language search with match evidence in every result row, so you can see why each record matched. - Cost transparency — every response reports credits_consumed, and expensive calls ask for confirmation before spending. - Field discovery — entity_fields finds the right field names by keyword, free, without loading the full 300+ field vocabulary into context. - File downloads — large result sets are stored server-side and returned as a download link instead of flooding the chat. - artifac
Installation
claude mcp add --transport http coresignal https://mcp.coresignal.com/mcp/v2
Configuration
{
"mcpServers": {
"coresignal": {
"url": "https://mcp.coresignal.com/mcp/v2"
}
}Capabilities
- Natural-language company and people search
Ask for B2B SaaS companies in the Nordics or senior Python developers at fintech firms using `entity_search` with plain-language queries.
- Discover field names by keyword
Use `entity_fields` to find the right field names (e.g., "salary" or "job title") without loading the full 300+ field vocabulary.
- Fetch full or projected records
Pull complete employee, company, or job profiles via `entity_fetch` using search handles (`cache_id`) or specific IDs, with per-record credit costs.
- Enrich contacts with verified emails
Use `email_enrich` to get verified business emails for up to 1,000 employee IDs, with 10 credits charged only for emails found.
- Export large result sets as files
Request `delivery="url"` to get downloadable JSONL files for big fetches, then page through them in-chat with the free `artifact_read` tool.
Tags
- data-analysis
- business-operations
- research
- crm
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