Leadenrich MCP Server

Waterfall lead enrichment for AI agents. Cascades through Apollo, Clearbit, and Hunter to build the most complete lead profile in a single call.

Local serverstdioPython

What is the Leadenrich MCP MCP server?

Waterfall lead enrichment for AI agents. Cascades through Apollo, Clearbit, and Hunter to build the most complete lead profile in a single call. Exposed over MCP by the leadenrich mcp mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.

Its toolset

Everything the assistant can do here goes through one of these:

  • enrich_lead — Full waterfall enrichment for a single lead (email, domain, or name+domain)
  • find_email — Discover an email from first name + last name + company domain
  • enrich_company — Company firmographic data by domain (industry, size, revenue, etc.)
  • enrich_batch — Batch enrich up to 25 leads concurrently
  • check_usage — Quota, cost tracking, and remaining lookups
  • health_check — Server status, configured providers, and cache stats
  • Smithery — This repo includes smithery.yaml for Smithery deployment

Configuration

You will need 4 environment variables: APOLLO_API_KEY, CLEARBIT_API_KEY, HUNTER_API_KEY, LEADENRICH_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

  • Python 3.11+ - pip

Adding it to your client

Installation goes through your MCP client rather than a global install: point it at leadenrich-mcp on PyPI and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

When to reach for it

Among the team communication options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Leadenrich MCP's toolset — enrich_lead, find_email, enrich_company and 4 more — is a fair guide to whether it matches your workflow. It is maintained by carsonlabs; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Leadenrich MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Caveats

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the leadenrich mcp mcp server does with a few real requests.

Available tools

ToolWhat it does
enrich_leadFull waterfall enrichment for a single lead (email, domain, or name+domain)
find_emailDiscover an email from first name + last name + company domain
enrich_companyCompany firmographic data by domain (industry, size, revenue, etc.)
enrich_batchBatch enrich up to 25 leads concurrently
check_usageQuota, cost tracking, and remaining lookups
health_checkServer status, configured providers, and cache stats
SmitheryThis repo includes smithery.yaml for [Smithery](https://smithery.ai/) deployment.

How to install the Leadenrich MCP MCP server

{
  "mcpServers": {
    "leadenrich": {
      "command": "uvx",
      "args": ["leadenrich-mcp"],
      "env": {
        "APOLLO_API_KEY": "your-value",
        "CLEARBIT_API_KEY": "your-value",
        "HUNTER_API_KEY": "your-value",
        "LEADENRICH_API_KEY": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • Python 3.11+ - pip
VariableDescriptionRequired
APOLLO_API_KEYCredential the server authenticates with.Yes
CLEARBIT_API_KEYCredential the server authenticates with.Yes
HUNTER_API_KEYCredential the server authenticates with.Yes
LEADENRICH_API_KEYCredential the server authenticates with.Yes

Example prompts to try

  • Use Leadenrich MCP to enrich lead.
  • Use Leadenrich MCP to find email.
  • Use Leadenrich MCP to enrich company.

Frequently asked questions

It connects Leadenrich MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 7 tools (enrich_lead, find_email, enrich_company, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Leadenrich MCP directly.