Hunter Io MCP Server

MCP server for Hunter.io API integration. Features include finding and verifying email addresses. The hunter io mcp server wraps that behind the Model Context Protocol, so an assistant can use it through 2 defined tools rather than through you.

What it actually does

This is a Model Context Protocol (MCP) server that integrates with the Hunter.io API to provide email finding and verification capabilities.

• Find email addresses using domain and name information
• Verify email addresses for deliverability and validity

Adding it to your client

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

Its toolset

Everything the assistant can do here goes through one of these:

• hunter_find_email — Find an email address using domain and name information
• hunter_verify_email — Verify if an email address is valid and deliverable

Configuration

You will need one environment variable: HUNTER_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

Caveats

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the hunter io mcp server does with a few real requests.

When to reach for it

This sits in the team communication group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Hunter Io's toolset — hunter_find_email, hunter_verify_email — is a fair guide to whether it matches your workflow. It is maintained by Meerkats-Ai; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.