Bring Contact Discovery
to Claude Desktop
Learn how to connect ContactOut to Claude Desktop and start using 7 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
What is the ContactOut MCP Server?
Connect your ContactOut account to any AI agent to streamline your B2B lead generation and talent acquisition workflows through natural conversation. ContactOut provides a powerful intelligence layer for discovering verified contact information and enriching professional profiles at scale.
What you can do
- Contact Discovery Orchestration — Instantly retrieve verified email addresses and direct phone numbers using LinkedIn profile URLs programmatically
- Professional Enrichment — Enrich contact and company data with detailed attributes, including job titles, locations, and social links to maintain a high-fidelity CRM
- Deep Semantic Search — Programmatically search the ContactOut database of 300M+ people using advanced filters for skills, titles, and locations
- Identity Resolution — Find the LinkedIn profile associated with a specific email address to perfectly coordinate your multichannel outreach
- Administrative Visibility — Programmatically track your credit balance and API usage statistics to coordinate your recruitment and sales budgets
How it works
1. Subscribe to this server
2. Retrieve your API Key from your ContactOut dashboard (Settings > API)
3. Start finding decision-makers and enriching your lead lists from Claude, Cursor, or any MCP client
No more manual profile scraping or guessing email formats. Your AI acts as your dedicated sales associate and recruitment coordinator.
Who is this for?
- Sales Development (SDRs) — build highly targeted outreach lists with verified contact info using natural language commands
- Technical Recruiters — search for candidates with specific skills and retrieve contact details without leaving your workspace
- Growth Marketers — automate lead enrichment and identify LinkedIn profiles from email lists through simple AI queries
Built-in capabilities (7)
Enrich company data
Enrich contact data
Find email by LinkedIn profile
Find LinkedIn profile by email
Get API usage statistics
Search for companies
Search for people
Why Claude Desktop?
Claude Desktop is the definitive way to connect ContactOut to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 7 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.
- —
Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available
- —
Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface
- —
Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions
- —
Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network
ContactOut in Claude Desktop
ContactOut and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect ContactOut to Claude Desktop through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for ContactOut in Claude Desktop
The ContactOut 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. All 7 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Claude Desktop only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* 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
How Vinkius secures
ContactOut for Claude Desktop
Every tool call from Claude Desktop to the ContactOut MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
How do I find my ContactOut API Key?
Log in to your account, navigate to Settings > API, and copy your unique access token.
Can I search for people by skills and location?
Yes! The search_people tool accepts a JSON object with filters like skills, location, and job_title programmatically.
How do I find an email using a LinkedIn URL?
Use the find_email_by_linkedin tool and provide the full LinkedIn profile URL to retrieve verified contact details.
How does Claude Desktop discover MCP tools?
When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.
What happens if the MCP server is temporarily unavailable?
Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.
Can I connect multiple MCP servers simultaneously?
Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.
Is there a limit on the number of tools per server?
Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.
Does Claude Desktop support Streamable HTTP transport?
Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.
Server not appearing after restart
Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).
Authentication error
Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.
Tools not showing in chat
Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.