Apollo IO MCP Server + Claude.ai: Complete MCP Integration
Apollo IO MCP Server is a MCP server that apollo.io mcp server. Get/enrich contact data for people and organizations agentically..
When integrated with Claude.ai, you can:
- Enrich contact data for individuals with comprehensive profile information
- Enrich company data with detailed organizational information
- Advanced people search with extensive filtering options
This guide provides step-by-step instructions to set up Apollo IO MCP Server in Claude.ai, including configuration, examples, and troubleshooting.
What You'll Achieve
After completing this setup:
- Apollo IO MCP Server will be fully integrated and operational
- You can use Apollo IO MCP Server tools directly in Claude.ai
- All Apollo IO MCP Server capabilities will be available for your workflows
- Access to 7 different tools
Prerequisites
Before starting, ensure you have:
- Node.js
- npm
- Apollo.io API key
- Apollo.io API key for accessing enrichment services
- Claude.ai installed and configured
- Compatible operating system (Web Browser)
Installation
Step 1: Install Apollo IO MCP Server
Install using npm:
npm install @agentx-ai/apollo-io-mcp-server
Verify installation:
npm list @agentx-ai/apollo-io-mcp-server
Configuration
Step 2: Configure Claude.ai
- Open Claude.ai settings
- Navigate to MCP server configuration
- Add Apollo IO MCP Server server with appropriate settings
- Save and restart if needed
Examples
Once configured, you can use Apollo IO MCP Server in Claude.ai:
Enrich Contact Information
Enrich a person's profile using their email address
Ask Claude.ai: "Enrich the contact information for [email protected] and get their professional background"
Expected Result: Complete profile with job title, company details, social profiles, and professional background
Find Marketing Decision Makers
Search for marketing managers at technology companies
Ask Claude.ai: "Find Marketing Managers at technology companies in San Francisco with 100-500 employees"
Expected Result: List of marketing professionals with contact details, company information, and role descriptions
Company Intelligence Gathering
Get comprehensive information about a target company
Ask Claude.ai: "Get detailed information about Salesforce including employee count, recent hires, and current job openings"
Expected Result: Company profile with metrics, employee data, hiring trends, and job postings
Competitive Analysis
Analyze competitors and find key contacts
Ask Claude.ai: "Find all companies in the CRM software space and identify their VP of Sales contacts"
Expected Result: Competitive landscape with company profiles and key decision maker contact information
Testing Your Setup
- Start a new conversation in Claude.ai
- Ask Claude.ai to list available tools
- Try using Apollo IO MCP Server functionality
Test prompts:
- "What tools are available to me right now?"
- "Can you use Apollo IO MCP Server to help me with {example_task}?"
- "Show me the capabilities from my connected MCP servers"
Troubleshooting
Common Issues
Apollo.io API Key Invalid
Symptoms: 401 Authentication errors, API key not recognized, Access denied messages
Cause: Invalid, expired, or missing Apollo.io API key
Solution:
- Generate new API key from Apollo.io settings
- Verify APOLLO_IO_API_KEY environment variable is set
- Check API key has appropriate permissions
- Ensure no extra spaces or characters in key
Rate Limiting Errors
Symptoms: 429 Too Many Requests, API quota exceeded, Rate limit messages
Cause: Exceeded Apollo.io API rate limits
Solution:
- Check your Apollo.io plan limits and usage
- Implement delays between requests
- Upgrade Apollo.io plan for higher limits
- Optimize queries to use fewer API calls
Claude Desktop Not Detecting Server
Symptoms: No tools showing up, MCP server not connected, Configuration ignored
Cause: Incorrect claude_desktop_config.json setup
Solution:
- Verify JSON syntax in configuration file
- Check file is in correct location for your OS
- Restart Claude Desktop after configuration changes
- Test server with MCP inspector first
Search Results Empty or Limited
Symptoms: No search results, Limited contact data, Enrichment fails
Cause: Search criteria too restrictive or data not available
Solution:
- Broaden search criteria and filters
- Try different search parameters
- Check if company/person exists in Apollo database
- Verify search syntax and parameter format
NPM Installation Errors
Symptoms: Package not found, Installation failures, Dependency errors
Cause: NPM registry issues or network connectivity
Solution:
- Clear NPM cache: npm cache clean --force
- Try alternative registry: npm install --registry https://registry.npmjs.org/
- Check internet connectivity and proxy settings
- Update NPM: npm install -g npm@latest
Cannot Find MCP Settings
Symptoms: No MCP option in settings, Integration menu missing
Cause: Feature may not be available in current web interface version
Solution:
- Check if your account has access to MCP features
- Try accessing from different browser or clearing cache
- Contact Anthropic support for account feature access
Server Connection Failed
Symptoms: Connection timeout, Server unreachable errors
Cause: Network connectivity or server configuration issues
Solution:
- Verify server URL is correct and accessible
- Check if server requires authentication
- Ensure server supports web client connections
- Test server connectivity from other clients
Tools Not Appearing
Symptoms: Server connected but no tools available, Empty tools list
Cause: Server connected but not properly exposing tools
Solution:
- Verify server is properly configured and running
- Check server logs for tool registration issues
- Refresh connection or reconnect to server
- Ensure server implements MCP protocol correctly
Apollo IO MCP Server not appearing in Claude.ai
Symptoms: Server not listed, Tools not available
Cause: Configuration or installation issue
Solution:
- Verify configuration syntax
- Check Apollo IO MCP Server installation
- Restart Claude.ai
- Check logs for error messages
Next Steps
Now that Apollo IO MCP Server is integrated with Claude.ai:
- Explore all Apollo IO MCP Server capabilities through Claude.ai
- Check out other MCP servers that work with Claude.ai
- Join the MCP community for tips and support
- Consider contributing to Apollo IO MCP Server development
Need Help?
- Search for Apollo IO MCP Server documentation
- Check the Claude.ai MCP guide
- Join the MCP community discussions