Connect Cursor and Claude Desktop to Live B2B Lead Enrichment MCP API

Description and use

Connect Cursor and Claude Desktop to a live B2B Lead Enrichment MCP API to fetch structured firmographic data in real time, eliminating manual entry and reducing hallucinations.

Problem

LLMs lack real‑time firmographic and intent data, forcing manual data entry or costly RAG pipelines.

Outcome

Agents can now enrich leads in real time with validated JSON data, reducing hallucinations and manual effort while enabling cost‑effective billing.

Workflow

• 1. Obtain free API key from lead‑enrichment‑mcp.agent‑infra.workers.dev
• 2. Add MCP server config to claude_desktop_config.json or Cursor Models settings with command, args, and env variables
• 3. Start the MCP server using npx @agent‑infra/mcp‑server‑lead‑enrichment
• 4. In Claude or Cursor, invoke tools like enrich_lead or search_companies via JSON‑RPC
• 5. Receive structured JSON responses with confidence scores
• 6. Use confidence score >0.6 to trigger billing, ensuring cost‑effective workflows

Evidence

Giving LLMs like Claude 3.5 Sonnet native access to live firmographic data and intent signals is most effectively achieved by connecting your IDE or desktop client to a B2B lead enrichment MCP server.

Source

The B2B Lead Enrichment MCP API provides a comprehensive data layer designed for high-precision autonomous agents.

Source

Your account is only debited for successful enrichments that return a Confidence Score > 0.6.

Source