Mcp Enrichment

@opafex/mcp-enrichment

MCP server for multi-source entity enrichment — company data, contact lookup, email verification, phone validation, and email discovery.

Uses Clearbit, Hunter.io, and Twilio APIs. Works in mock mode with no API keys configured.

Installation

# Clone and build from sourcegit clone https://github.com/opafex/opafex-mcps.gitcd opafex-mcpsnpm install && npm run build

Requires Node.js 20+.

Quick Start

Add to Claude Code / Claude Desktop

Create or edit .mcp.json in your project root:

{  "mcpServers": {    "enrichment": {      "command": "node",      "args": ["/path/to/opafex-mcps/packages/enrichment/dist/index.js"],      "env": {        "CLEARBIT_API_KEY": "sk-...",        "HUNTER_API_KEY": "...",        "TWILIO_ACCOUNT_SID": "...",        "TWILIO_AUTH_TOKEN": "..."      }    }  }}

Omit the env block to run in mock mode.

Tools

enrich_company

Enrich company data from a domain name or company name. Returns industry, employee count, funding, tech stack, social profiles, and more.

Provider: Clearbit

{  "success": true,  "company": {    "name": "Company for stripe.com",    "domain": "stripe.com",    "description": "A leading technology company specializing in innovative solutions.",    "industry": "Technology",    "sector": "Software",    "employees": 150,    "employeesRange": "101-250",    "founded": 2015,    "location": { "city": "London", "country": "United Kingdom" },    "socialProfiles": { "linkedin": "https://linkedin.com/company/example" },    "techStack": ["React", "Node.js", "PostgreSQL", "AWS"],    "type": "private"  },  "provider": "mock",  "cached": false,  "timestamp": "2026-03-15T00:00:00.000Z"}

enrich_contact

Enrich contact/person data from an email address or LinkedIn URL.

Provider: Clearbit

verify_email

Verify an email address for deliverability. Returns validity, deliverability score, disposable/free provider detection, role-based detection, and SMTP validation.

Provider: Hunter.io

{  "success": true,  "email": "[email protected]",  "valid": true,  "deliverable": true,  "disposable": false,  "freeProvider": false,  "role": false,  "score": 95,  "provider": "mock",  "cached": false}

verify_phone

Validate and look up a phone number. Returns validity, formatted number, line type (mobile/landline/voip), carrier info, and location.

Provider: Twilio

find_email

Find the email address for a specific person at a company.

Provider: Hunter.io

{  "success": true,  "email": "[email protected]",  "score": 85,  "sources": ["LinkedIn", "Company Website"],  "provider": "mock",  "cached": false}

server_info (built-in)

Returns server metadata: name, version, registered tools, and resources. Added automatically by @opafex/mcp-shared.

Resources

Mock Mode

When no API keys are configured, all tools return realistic mock data. This is great for development and testing — you can build against the MCP without any API accounts.

Mock mode activates automatically:

• Globally when none of CLEARBIT_API_KEY, HUNTER_API_KEY, or TWILIO_ACCOUNT_SID are set
• Per-tool when the specific provider key is missing (e.g. if you only set CLEARBIT_API_KEY, company/contact tools use real data while email/phone tools fall back to mock)

Check enrichment://status resource or the server_info tool to see which providers are active.

Environment Variables

Development

npm run build    # Compile TypeScriptnpm run dev      # Run with tsx (no build needed)npm test         # Run testsnpm start        # Run compiled server

Library Usage

The enrichment service can be used programmatically (not just as an MCP server):

import { EnrichmentService } from '@opafex/mcp-enrichment/service';import type { CacheProvider } from '@opafex/mcp-enrichment/service';
const service = new EnrichmentService({  clearbitApiKey: 'sk-...',  hunterApiKey: '...',});
const result = await service.enrichCompany({ domain: 'stripe.com' });

Custom Cache Provider

The default in-memory cache works out of the box. For Redis, SQLite, or any custom store, implement the CacheProvider interface:

import { EnrichmentService } from '@opafex/mcp-enrichment/service';import type { CacheProvider } from '@opafex/mcp-enrichment/service';
const redisCache: CacheProvider = {  async get(key) { /* ... */ },  async set(key, data, ttlMs) { /* ... */ },  async delete(key) { /* ... */ },  async clear() { /* ... */ },};
const service = new EnrichmentService({  clearbitApiKey: '...',  cache: redisCache,});

Contributing

Found a bug or have a feature request? Open an issue.

Pull requests welcome — see the main repo for development setup.

License

MIT — see LICENSE.