All companies

Overview

Hunter finds and verifies professional email addresses: it lists the people and emails behind a company domain, finds one person's email, checks deliverability, discovers companies that match a profile, enriches people and companies, and runs outreach sequences from saved leads. The hosted MCP server covers all of it; Claude, ChatGPT and Gemini sign in with OAuth, and other clients send the API key in an `X-API-Key` header. The REST API accepts the key in that header, as a Bearer token, or as the `api_key` query parameter. Every plan, including the free one, can use the API and the MCP server. Usage counts against the plan's credits: a search uses 1 credit and a verification half a credit, while Discover (company search) is free.