Bring Phone Validation
to CrewAI
Create your Vinkius account to connect NumVerify to CrewAI and start using all 4 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 NumVerify MCP Server?
Empower your AI agent to orchestrate your entire phone validation and identity verification workflow with NumVerify, the global API for phone number intelligence. By connecting NumVerify to your agent, you transform complex validation tasks into a natural conversation. Your agent can instantly verify if a number is valid, audit carrier information, and retrieve geographic location data without you ever touching a manual lookup tool. Whether you are cleaning lead lists or verifying user identity, your agent acts as a real-time communications analyst, ensuring your phone data is always verified and accurate.
What you can do
- Phone Auditing — Verify if any international phone number is valid and retrieve detailed metadata, including country and dial codes.
- Carrier Oversight — Identify the current carrier for a phone number to maintain a clear view of network distribution.
- Location Discovery — Retrieve the geographic location (city/region) associated with a phone number instantly.
- Line-type Intelligence — Identify if a number is a mobile, landline, or VoIP line to optimize your communication strategy.
- Metadata Integrity — Retrieve official country names and formatting details to maintain strict organizational control over your contact data.
How it works
- Subscribe to this server
- Enter your NumVerify Access Key
- Start managing your phone intelligence through Claude, Cursor, or any MCP-compatible client
Who is this for?
- Sales Operations — monitor lead lists and retrieve verified phone metadata straight from your workflow.
- Marketing Managers — verify if contact numbers are valid and audit carrier distribution for SMS campaigns.
- Security Teams — perform rapid audits of user phone numbers and identify line types through natural language.
- Operations Leads — automate phone data querying to orchestrate cross-functional communications teams smoothly.
Built-in capabilities (4)
Get carrier information for a phone number
Identify if a phone number is mobile, landline, or other
Get geographic location details for a phone number
Verify if a phone number is valid and retrieve metadata
Why CrewAI?
When paired with CrewAI, NumVerify becomes a first-class tool in your multi-agent workflows. Each agent in the crew can call NumVerify tools autonomously, one agent queries data, another analyzes results, a third compiles reports, all orchestrated through Vinkius with zero configuration overhead.
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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
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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
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Sequential and hierarchical crew patterns map naturally to real-world workflows: enumerate subdomains → analyze DNS history → check WHOIS records → compile findings into actionable reports
NumVerify in CrewAI
Why run NumVerify with Vinkius?
The NumVerify 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 4 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 NumVerify using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
NumVerify and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect NumVerify 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
NumVerify for CrewAI
Every request between CrewAI and NumVerify 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 find my NumVerify Access Key?
Log in to your NumVerify dashboard, and you will find your Access Key on the main page. Copy and paste it below.
Does it support international numbers?
Yes. NumVerify covers over 232 countries and provides detailed validation and metadata for global phone numbers.
Can the agent identify if a number is mobile or landline?
Yes. The get_phone_line_type tool retrieves the line type (e.g., 'mobile', 'landline') allowing you to audit the nature of your contact data.
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.
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