MCP Server

Audit a domain email deliverability via Apify: SPF, DKIM, DMARC, MX, blacklist, catch-all, age.

Local serverstdioGo

What is the MCP MCP server?

If you already use MCP, the mcp mcp server is the piece that lets your assistant work with it directly. Audit a domain email deliverability via Apify: SPF, DKIM, DMARC, MX, blacklist, catch-all, age.

What the server does

An MCP server that exposes the Mamba Labs Domain Deliverability Checker as a single tool. Install one package and give your MCP client a way to audit any domain's email deliverability and DNS health, wrapping the Mamba Labs actor on Apify and returning Clay-ready flat JSON.

  • check_domain_deliverability: audit a domain's SPF, DKIM, DMARC, MX, mail provider, DNS blacklist status, catch-all, domain age, and a 0 to 100 deliverability score

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • check_domain_deliverability — audit a domain's SPF, DKIM, DMARC, MX, mail provider, DNS blacklist status, catch-all, domain age, and a 0 to 100 deliverability score
  • Actor — Immutable Actor ID

Credentials and setup notes

Configuration is passed through the environment: APIFY_TOKEN. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

  • Node.js 18 or newer - An Apify account with an API token

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

Where it fits

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. MCP's toolset — check_domain_deliverability, Actor — is a fair guide to whether it matches your workflow. It is maintained by com.mambabuilt; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Worth knowing first

  • 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.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
check_domain_deliverabilityaudit a domain's SPF, DKIM, DMARC, MX, mail provider, DNS blacklist status, catch-all, domain age, and a 0 to 100 deliverability score.
ActorImmutable Actor ID

How to install the MCP MCP server

{
  "mcpServers": {
    "mamba-domain-deliverability-checker": {
      "command": "npx",
      "args": ["-y", "@mambalabsdev/mcp-domain-deliverability-checker"],
      "env": {
        "APIFY_TOKEN": "your-apify-token"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Node.js 18 or newer - An Apify account with an API token
VariableDescriptionRequired
APIFY_TOKENCredential the server authenticates with.Yes

Example prompts to try

  • Use MCP to check domain deliverability.
  • Use MCP to Actor.

Frequently asked questions

It connects MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 2 tools (check_domain_deliverability, Actor) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with MCP directly.