How do I get my Hunter.io API key?

Log in to your Hunter.io account at **hunter.io**. In the left sidebar, click the **API** section (or go directly to **hunter.io/api-keys**). Your API key is displayed on this page. Click the **copy** button to copy it. Paste it into the configuration field below. Free plans include 25 searches and 50 verifications per month.

Can I find the email of a specific person at a company?

Yes. Give your AI agent a person's first name, last name, and company domain, and it returns their most likely professional email address with a confidence score. Perfect for reaching out to specific decision-makers.

How accurate is the email verification?

Hunter's verification checks MX records, SMTP responses, and catch-all configurations — returning a status of 'valid', 'invalid', 'accept_all', or 'unknown'. Valid emails have over 95% deliverability. Always verify before sending cold outreach to protect your sender reputation.

Does it work with free plans?

Yes. Hunter offers a free plan with 25 email searches and 50 verifications per month. The API key works the same regardless of plan — the only difference is quota limits. Upgrade to a paid plan for higher volumes.

Hunter MCP Server for AutoGen 10 tools — connect in under 2 minutes

Name: Hunter
Availability: InStock
Author: Vinkius

microsoft.github.io/autogen/docs/tools/mcp-tools

Built by Vinkius GDPR 10 Tools Framework

Microsoft AutoGen enables multi-agent conversations where agents negotiate, delegate, and execute tasks collaboratively. Add Hunter as an MCP tool provider through Vinkius and every agent in the group can access live data and take action.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.tools.mcp import McpWorkbench

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with McpWorkbench(
        server_params={"url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"},
        transport="streamable_http",
    ) as workbench:
        tools = await workbench.list_tools()
        agent = AssistantAgent(
            name="hunter_agent",
            tools=tools,
            system_message=(
                "You help users with Hunter. "
                "10 tools available."
            ),
        )
        print(f"Agent ready with {len(tools)} tools")

asyncio.run(main())

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Hunter MCP Server

Connect Hunter.io to your AI agent and power your lead generation with verified email discovery and enrichment.

AutoGen enables multi-agent conversations where agents negotiate, delegate, and collaboratively use Hunter tools. Connect 10 tools through Vinkius and assign role-based access. a data analyst queries while a reviewer validates, with optional human-in-the-loop approval for sensitive operations.

What you can do

Domain Search — Find all professional email addresses associated with any company domain.
Email Finder — Locate a specific person's email using their name and company domain.
Email Verification — Verify if an email address is valid, deliverable, and safe to send to.
Lead Lists — Create and manage lead lists with verified contacts for outreach campaigns.

The Hunter MCP Server exposes 10 tools through the Vinkius. Connect it to AutoGen in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Hunter to AutoGen via MCP

Follow these steps to integrate the Hunter MCP Server with AutoGen.

Install AutoGen

Run pip install "autogen-ext[mcp]"

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Integrate into workflow

Use the agent in your AutoGen multi-agent orchestration

Explore tools

The workbench discovers 10 tools from Hunter automatically

Why Use AutoGen with the Hunter MCP Server

AutoGen provides unique advantages when paired with Hunter through the Model Context Protocol.

Multi-agent conversations: multiple AutoGen agents discuss, delegate, and collaboratively use Hunter tools to solve complex tasks

Role-based architecture lets you assign Hunter tool access to specific agents. a data analyst queries while a reviewer validates

Human-in-the-loop support: agents can pause for human approval before executing sensitive Hunter tool calls

Code execution sandbox: AutoGen agents can write and run code that processes Hunter tool responses in an isolated environment

Hunter + AutoGen Use Cases

Practical scenarios where AutoGen combined with the Hunter MCP Server delivers measurable value.

Collaborative analysis: one agent queries Hunter while another validates results and a third generates the final report

Automated review pipelines: a researcher agent fetches data from Hunter, a critic agent evaluates quality, and a writer produces the output

Interactive planning: agents negotiate task allocation using Hunter data to make informed decisions about resource distribution

Code generation with live data: an AutoGen coder agent writes scripts that process Hunter responses in a sandboxed execution environment

Hunter MCP Tools for AutoGen (10)

These 10 tools become available when you connect Hunter to AutoGen via MCP:

domain_search

Search emails by domain

email_count

Count emails for domain

email_finder

Find specific email

email_verifier

Verify email address

get_account

Get account info

get_campaign

Get campaign details

list_campaigns

List campaigns

list_lead_lists

List lead lists

list_leads

List saved leads

list_recipients

List campaign recipients

Example Prompts for Hunter in AutoGen

Ready-to-use prompts you can give your AutoGen agent to start working with Hunter immediately.

"Find all email addresses at stripe.com."

"Find the email for Sarah Johnson at Acme Corp."

"Verify if contact@oldstartup.io is still valid."

Troubleshooting Hunter MCP Server with AutoGen

Common issues when connecting Hunter to AutoGen through the Vinkius, and how to resolve them.

McpWorkbench not found

Install: pip install "autogen-ext[mcp]"

Hunter + AutoGen FAQ

Common questions about integrating Hunter MCP Server with AutoGen.

How does AutoGen connect to MCP servers?

Create an MCP tool adapter and assign it to one or more agents in the group chat. AutoGen agents can then call Hunter tools during their conversation turns.

Can different agents have different MCP tool access?

Yes. AutoGen's role-based architecture lets you assign specific MCP tools to specific agents, so a querying agent has different capabilities than a reviewing agent.