Give your AI agent a B2B contact search tool in one line of config

Published 18 September 2026 · TAPAC

Most agents are good at writing outreach and bad at knowing who to send it to. That gap is not a prompting problem — it is a missing tool. The Model Context Protocol (MCP) is the standard way to hand an agent a real capability instead of asking it to guess. TAPAC ships an MCP server, so the "find and verify contacts" step becomes a tool call.

The install

npx -y @tapacapi/mcp

That is the whole local install: no clone, no build, no Python. For clients that read JSON config (Claude Desktop, Cursor, Codex, Windsurf), the entry is:

{
  "mcpServers": {
    "tapac": {
      "command": "npx",
      "args": ["-y", "@tapacapi/mcp"],
      "env": { "TAPAC_API_KEY": "your_key" }
    }
  }
}

If you prefer Python, uvx tapac-mcp works the same way. There is also a hosted endpoint, and a hosted SKILL.md for agents that load skills rather than servers. Full notes: tapacapi.com/mcp.html.

What the agent can call

• tapac_find_contacts — takes criteria (industry, job titles, company size, location, source) and returns contacts with verification status.
• tapac_status — key validity and remaining searches.

Verification happens at request time, over SMTP, per address. That is the difference from a stored list: what the agent hands you is what resolved a moment ago.

What happens with no key

Nothing breaks. The server returns onboarding text pointing at /get-key instead of throwing an error into the conversation — so you can wire an agent up before you have a key, and the agent tells the user what to do. 100 searches are free and no card is required.

Why this matters with real numbers

• 23% of contacts change jobs annually (ZoomInfo, 2025) — a list is decaying the day it is bought.
• 40% of emails are dead within two years (NeverBounce).
• Fresh scraped data outperforms stale databases by 42% (Harvard Business Review, 2024).
• Personalized outreach gets 3.2× higher open rates (HubSpot, 2025) — personalization needs the right person, not just any address.
• TAPAC's own bounce rate is 2–5% against the 10–35% range typical of static databases, at $0.10–0.50 per contact.

A sane sequence

1. Install the server (one line above).
2. Ask the agent for contacts with tight criteria — narrow beats broad.
3. Use the returned verification status; do not send to anything unverified.
4. Compare with your own numbers using the free lead cost & bounce-risk calculator.

Keep reading

• TAPAC vs Apollo, ZoomInfo, Hunter and Lusha
• Verify email before sending
• What a 10–35% bounce rate actually costs you
• Comparison from the other side: Apollo alternative · ZoomInfo alternative

Get a key: tapacapi.com/get-key.

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