Bring Email Finder
to CrewAI
Create your Vinkius account to connect Hunter to CrewAI and start using all 10 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Hunter MCP Server?
Connect Hunter.io to your AI agent and power your lead generation with verified email discovery and enrichment.
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.
How it works
- Subscribe to the Hunter integration on the marketplace.
- Copy your API key from your Hunter.io dashboard (API section in the left sidebar).
- Ask your AI agent to find emails, verify addresses, or search domains.
Who is this for?
- SDR Teams — Find decision-maker emails instantly and verify them before adding to outreach sequences.
- Growth Marketers — Build targeted prospect lists by domain with verified, deliverable email addresses.
- Recruiters — Locate candidate email addresses by name and company for direct outreach.
Built-in capabilities (10)
Search emails by domain
Count emails for domain
Find specific email
Verify email address
Get account info
Get campaign details
List campaigns
List lead lists
List saved leads
List campaign recipients
Why CrewAI?
When paired with CrewAI, Hunter becomes a first-class tool in your multi-agent workflows. Each agent in the crew can call Hunter tools autonomously, one agent queries data, another analyzes results, a third compiles reports, all orchestrated through Vinkius with zero configuration overhead.
- —
Multi-agent collaboration lets you decompose complex workflows into specialized roles, one agent researches, another analyzes, a third generates reports, each with access to MCP tools
- —
CrewAI's native MCP integration requires zero adapter code: pass Vinkius Edge URL directly in the
mcpsparameter and agents auto-discover every available tool at runtime - —
Built-in task delegation and shared memory mean agents can pass context between steps without manual state management, enabling multi-hop reasoning across tool calls
- —
Sequential and hierarchical crew patterns map naturally to real-world workflows: enumerate subdomains → analyze DNS history → check WHOIS records → compile findings into actionable reports
Hunter in CrewAI
Why run Hunter with Vinkius?
The Hunter connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 10 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Hunter using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Hunter and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Hunter to CrewAI through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Hunter for CrewAI
Every request between CrewAI and Hunter is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
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.
How does CrewAI discover and connect to MCP tools?
CrewAI connects to MCP servers lazily. when the crew starts, each agent resolves its MCP URLs and fetches the tool catalog via the standard tools/list method. This means tools are always fresh and reflect the server's current capabilities. No tool schemas need to be hardcoded.
Can different agents in the same crew use different MCP servers?
Yes. Each agent has its own mcps list, so you can assign specific servers to specific roles. For example, a reconnaissance agent might use a domain intelligence server while an analysis agent uses a vulnerability database server.
What happens when an MCP tool call fails during a crew run?
CrewAI wraps tool failures as context for the agent. The LLM receives the error message and can decide to retry with different parameters, fall back to a different tool, or mark the task as partially complete. This resilience is critical for production workflows.
Can CrewAI agents call multiple MCP tools in parallel?
CrewAI agents execute tool calls sequentially within a single reasoning step. However, you can run multiple agents in parallel using process=Process.parallel, each calling different MCP tools concurrently. This is ideal for workflows where separate data sources need to be queried simultaneously.
Can I run CrewAI crews on a schedule (cron)?
Yes. CrewAI crews are standard Python scripts, so you can invoke them via cron, Airflow, Celery, or any task scheduler. The crew.kickoff() method runs synchronously by default, making it straightforward to integrate into existing pipelines.
MCP tools not discovered
Ensure the Edge URL is correct. CrewAI connects lazily when the crew starts. check console output.
Agent not using tools
Make the task description specific. Instead of "do something", say "Use the available tools to list contacts".
Timeout errors
CrewAI has a 10s connection timeout by default. Ensure your network can reach the Edge URL.
Rate limiting or 429 errors
Vinkius enforces per-token rate limits. Check your subscription tier and request quota in the dashboard. Upgrade if you need higher throughput.
Explore More MCP Servers
View all →
FastSpring
10 toolsManage digital commerce via FastSpring — track orders and subscriptions, handle accounts, and manage product catalogs directly from any AI agent.
Cohere
6 toolsAccess Cohere AI models via API — chat with Command models, generate embeddings, rerank documents and tokenize text from any AI agent.
Road511
8 toolsAccess real-time US and Canada traffic data via Road511 — track incidents, monitor cameras, check road conditions, and analyze trends from any AI agent.
John Deere
7 toolsMonitor farm operations via John Deere APIs — track machines, map fields, review planting and harvest data from any AI agent.