Hunter MCP server
Verified data and outreach tools
for any MCP client
Find and verify email addresses, segment and enrich leads, then send outreach sequences by connecting Hunter’s MCP to your LLM.
Add Hunter MCP to Claude
Works in claude.ai and the Claude apps.
Add Hunter as a custom connector in a few clicks.
- Create a free Hunter account
- Click “Add to Claude” below to fill in the connector for you.
- Click “Continue”, then “Add”.
- Connect to Hunter and allow the connection.
On Claude Team and Enterprise plans, only owners (and Enterprise roles with that permission) can add a custom connector. If you’re a member, ask an owner to add Hunter, then connect to it.
Add Hunter MCP to ChatGPT
Works in ChatGPT on the web.
Add Hunter’s MCP manually using the steps below.
- Create a free Hunter account
- Open ChatGPT, go to Plugins → Add → Add custom MCP server.
-
Fill in the form:
-
Name
Hunter -
Connection
https://mcp.hunter.io/mcp -
Authentication
OAuth
-
Name
- Check “I understand and want to continue”, then click “Create as a plugin”.
- Click “Continue to Hunter.io MCP” and allow the connection.
Custom MCP servers need ChatGPT on the web and a Business, Enterprise, or Edu workspace. On another plan, use Hunter’s ChatGPT app instead.
Add Hunter MCP to GrokBot
Works in GrokBot on the web and in the app.
Add Hunter’s plugin, then connect it with your API key.
- Create a free Hunter account
- Click “Add to GrokBot” below to add the plugin.
- Click “Connect” and add your API key.
- Click “Add Hunter” and you’re done.
Add Hunter MCP to Codex
Works in the Codex CLI and the Codex IDE extension.
Add Hunter’s MCP from your terminal.
- Create a free Hunter account
- Add the server from your terminal, then complete the authentication.
Add Hunter MCP to Cursor
Add Hunter’s plugin, then connect it with your API key.
- Create a free Hunter account
- Click “Add to Cursor” below to add the plugin.
- Click “Add to Cursor” and add your API key.
- Click “Save” and you’re done.
Add Hunter MCP to another AI tool
Works with any MCP-compatible client.
Add Hunter’s MCP to its configuration file.
- Create a free Hunter account
- Add the MCP server configuration to your AI client.
-
Set
HUNTER_API_KEYto your Hunter API key, then restart your AI client.
Trusted by thousands of companies
adopting AI for lead generation
One MCP server,
a full outreach suite
Ask an LLM for an email address and it happily invents one that is destined to bounce. Hunter’s Model Context Protocol (MCP) fixes that.
The Hunter MCP is free. All you need is a Hunter account, and your agent spends credits the same way you would in the app.
Connect Hunter to your AIOur MCP server gives your AI agent full access to the Hunter platform: verified B2B email data with the public source on every record, plus the tools to run email campaigns at volume, available whenever you chat with your agent.
“Send a follow-up sequence to last quarter’s closed-lost” becomes a chain of specific actions the agent takes inside Hunter.
Send a follow-up sequence to last quarter’s closed-lost list, but verify the addresses first.
- Email Verifier
- Requested permission
- Start Sequence
Your “Closed-lost · Q3” list has 24 leads. I verified every address first: 21 came back valid, so I added them to a new three-email sequence, “Q3 closed-lost check-in”, sending from sam@example.com over 10 days. It started once you approved it.
I left out these 3 addresses, which didn’t come back valid:
- Dana Whitfield, Northwind Logistics: Invalid, the mailbox doesn’t exist. Email: dana.whitfield@example.com.
- Omar Haddad, Brightfield Retail: Accept-all domain, so delivery can’t be confirmed. Email: omar.haddad@example.com.
- Lena Fischer, Corbin & Hale: Accept-all domain, so delivery can’t be confirmed. Email: lena.fischer@example.com.
Find the engineering managers at these 20 companies, and save them to a list called Q4 hiring.
- Domain Search
- Create Leads List
- Create Lead
I searched all 20 companies and found 23 engineering managers at 17 of them; the other 3 had no one with that title in Hunter’s data. I saved all 23 to your new “Q4 hiring” list, and each email address has a confidence score of 90% or higher.
A few of the managers now in Q4 hiring:
- Priya Raman, Lumen Analytics: Engineering Manager, Payments. Email: priya.raman@example.com.
- Marcus Okafor, Fernway: Senior Engineering Manager, Mobile. Email: marcus.okafor@example.com.
- Elena Sokolova, Tidewater Health: Engineering Manager, Platform. Email: elena.sokolova@example.com.
- Diego Alvarez, Quillstack: Engineering Manager, Data Infrastructure. Email: diego.alvarez@example.com.
Who covers fintech at Ledgerline, The Margin, and Fieldnote? Verified email only.
- Used Hunter.io MCP integration
- Requested permission
- Email Verifier
Alex Morgan covers fintech at Ledgerline; Jordan Ellis and Taylor Chen cover banking, fintech, and crypto at The Margin; and Samira Patel is Fieldnote’s dedicated fintech reporter.
Here’s how to reach them:
- Alex Morgan, Ledgerline: Covers India fintech and digital payments. Email: alex.morgan@example.com.
- Jordan Ellis, The Margin: Covers banking and financial services, including fintech. Email: jordan.ellis@example.com.
- Taylor Chen, The Margin: Covers crypto and digital assets. Email: taylor.chen@example.com.
- Samira Patel, Fieldnote: Fintech reporter and weekly fintech newsletter writer. Email: samira.patel@example.com.
Which of my sending accounts are running sequences, and which have room for more?
- List Email Accounts
- List Email Account Sequences
- Get Email Account
Three of your four accounts are running sequences. alex@example.com and jordan@example.com have room for more: Alex has a light queue and Jordan isn’t sending anything yet. sam@example.com has about 7 sending days of email queued, and taylor@example.com is still warming up, so hold new sequences on both.
Account by account:
- sam@example.com: Active, 50 emails a day. 3 sequences running, 340 emails queued. Full for now.
- alex@example.com: Active, 50 a day. 1 sequence running, 12 emails queued. Room for more.
- taylor@example.com: Warming up for 5 more days, sending reduced volume. 1 sequence running. Wait until it’s done.
- jordan@example.com: Active, 40 a day. No sequences running. Ready to use.
What the Hunter MCP can do
You connect the MCP to your agent, and it finds the right tools and data for what you’re building. No more guesswork.
AI models don’t lack judgment, they lack data. Connected to Hunter, models that once guessed an email address will return a real contact for 78% of requests.
Returned an email address
GPT-5.5 + Hunter MCP:
92%
GPT-5.5 alone:
42%
Ended with a valid email address
GPT-5.5 + Hunter MCP:
78%
GPT-5.5 alone:
19.5%
Invalid addresses returned
GPT-5.5 + Hunter MCP:
3%
GPT-5.5 alone:
45%
Works with the
AI tools you love
The remote MCP server works with any MCP-compatible client.
Add it once and start prospecting.
Add Hunter MCP to Claude
Works in claude.ai and the Claude apps.
Add Hunter as a custom connector in a few clicks.
- Create a free Hunter account
- Click “Add to Claude” below to fill in the connector for you.
- Click “Continue”, then “Add”.
- Connect to Hunter and allow the connection.
On Claude Team and Enterprise plans, only owners (and Enterprise roles with that permission) can add a custom connector. If you’re a member, ask an owner to add Hunter, then connect to it.
Add Hunter MCP to ChatGPT
Works in ChatGPT on the web.
Add Hunter’s MCP manually using the steps below.
- Create a free Hunter account
- Open ChatGPT, go to Plugins → Add → Add custom MCP server.
-
Fill in the form:
-
Name
Hunter -
Connection
https://mcp.hunter.io/mcp -
Authentication
OAuth
-
Name
- Check “I understand and want to continue”, then click “Create as a plugin”.
- Click “Continue to Hunter.io MCP” and allow the connection.
Custom MCP servers need ChatGPT on the web and a Business, Enterprise, or Edu workspace. On another plan, use Hunter’s ChatGPT app instead.
Add Hunter MCP to GrokBot
Works in GrokBot on the web and in the app.
Add Hunter’s plugin, then connect it with your API key.
- Create a free Hunter account
- Click “Add to GrokBot” below to add the plugin.
- Click “Connect” and add your API key.
- Click “Add Hunter” and you’re done.
Add Hunter MCP to Codex
Works in the Codex CLI and the Codex IDE extension.
Add Hunter’s MCP from your terminal.
- Create a free Hunter account
- Add the server from your terminal, then complete the authentication.
Add Hunter MCP to Cursor
Add Hunter’s plugin, then connect it with your API key.
- Create a free Hunter account
- Click “Add to Cursor” below to add the plugin.
- Click “Add to Cursor” and add your API key.
- Click “Save” and you’re done.
Add Hunter MCP to another AI tool
Works with any MCP-compatible client.
Add Hunter’s MCP to its configuration file.
- Create a free Hunter account
- Add the MCP server configuration to your AI client.
-
Set
HUNTER_API_KEYto your Hunter API key, then restart your AI client.
Skip the blank page,
start with a prompt.
Verify a list before a send
Here’s a CSV of 200 contacts. Verify each address with Hunter, drop anything invalid or risky, and save the valid ones to a new leads list called Q4 re-engagement.
Research an account before a call
I have a call with {{company_name}} tomorrow. Use Hunter to pull the contacts there, identify the most senior people in {{department}}, and return names, titles, and verified email addresses.
Pitch editors for a guest post
Find the editors and staff writers at {{publication}} who cover {{topic}}, verify their email addresses, save them to a list called Guest posts, and draft a 2-step pitch sequence for my review.
Find the right person at a specific company
I need to reach the person responsible for {{function_or_decision}} at {{company_name}}. Search Hunter for contacts at this company, identify the most likely decision-maker based on job title, verify their email address, and draft a short cold email referencing {{context_or_reason_for_reaching_out}}. Keep the email under 100 words and avoid generic openers.
Map a competitor’s team or hire pattern
Find everyone working at {{company_name}} in {{department}} roles. Organize them by seniority (leadership, mid-level, individual contributors) and include their verified email addresses where available. Highlight anyone whose title suggests they joined recently or were recently promoted.
Launch a campaign from research to send
I want to run an outreach campaign targeting {{ideal_customer_profile}}. Step 1: find {{number}} matching companies. Step 2: identify and verify contacts in {{job_titles}} roles at each. Step 3: save the verified contacts to a new Hunter leads list called “{{campaign_name}}”. Step 4: add them to a sequence in Hunter with the subject line “{{subject_line}}”. I’ll write the body myself. Confirm each step before moving to the next.
A Hunter account is all you need.
Create an account50 credits/month. No card needed.
Common questions
about Hunter’s MCP
If you can’t find the answer to your question here, visit the dedicated section in our Help Center.
Visit the Help CenterIt’s Hunter’s official implementation of the Model Context Protocol: a hosted server at mcp.hunter.io/mcp that exposes Hunter’s email finding, email verification, company and people search, enrichment, leads, and sequences as tools any MCP client can call. It runs against your own Hunter account.
Yes. The verification tool checks any address for deliverability and returns a status, and it works alongside the finding and enrichment tools so an agent can find, verify, and save in one pass. Verification costs 0.5 credit (one verification on Data Platform plans) and is free when Hunter can’t reach a verdict.
Any MCP-compatible client: Claude, ChatGPT, Gemini, Perplexity, Cursor, VS Code, Codex, Windsurf, n8n, and agents you build. Config snippets for the coding tools are above. See Hunter for AI & Agents for the full picture.
No. In Hunter’s study of leading models, 76% of the email addresses they produced were invalid: when a model can’t find an address it makes one up. Through the MCP, your agent gets addresses Hunter has found and verified, and when Hunter can’t confirm one, the agent says so instead of guessing.
Yes. The MCP reaches the same records through a different door. Discover, the Domain Search, the Email Finder, the Email Verifier, enrichment, Leads, and Sequences all work through it, within your plan (Data Platform plans don’t include Discover or Sequences), and anything the agent saves appears in the app right away.
No. For a few lookups, the Hunter web app or the Chrome extension is quicker than connecting anything. The MCP earns its two-minute setup when an assistant or agent is doing the work for you: building lists, verifying them, saving leads, and preparing sequences in one conversation.
No paid plan needed. The MCP works on every plan, including Free. Actions use the same credits as the app: 1 credit per email address found, 0.5 per verification, 0.2 per enrichment, and company search is free. On Data Platform plans, each search or verification uses one credit from its own balance (see pricing). You’re never charged when Hunter can’t find or verify an address, and repeating a lookup within the same billing month costs nothing.
On the API keys page of your Hunter account. Config-file clients pass it as X-API-Key on every request. You can create several keys and revoke any of them there. Claude and ChatGPT connect with OAuth and don’t need it; GrokBot and Cursor ask for it during setup.
Start a fresh chat: connections aren’t picked up mid-conversation. Then check that you finished the authorization step, that your account is active, and that your AI plan supports connectors. Still stuck? The Help Center has a checklist per client.
Same data, different interface. The MCP is for AI clients that call tools in natural language. The REST API is for code: products, scripts, and custom agents that make HTTP requests. Both use the same account and credits.
A native connector is Hunter listed inside one assistant, so you add it with a click, but it can expose fewer tools: the ChatGPT app, for example, has no Email Finder, Domain Search, or person enrichment. The MCP works everywhere and gives your agent the full toolset. Browse the available connectors if you’d rather start there.
Yes. This is Hunter’s official MCP server. It only accesses your Hunter data within the permissions you grant, over HTTPS, validates your credential on every request, and never stores it.