# MCP server for email verification

URL: https://email-validation.org/integrations/mcp/
Updated: 2026-10-20

> Documentation index: https://email-validation.org/llms.txt

Give AI agents and MCP clients a tool to validate email addresses. The remote MCP server uses your API key and the same credits, limits and rules as the REST API, including free unknown results.

## Tools the server offers

| Tool | What it does | Credits |
| --- | --- | --- |
| `validate_email` | Validate one address: status, reason, recommended action and the detail fields. | 1 credit, unknown free |
| `get_credits` | Read your credit balance and the credits that expire soonest. | Free |
| `create_bulk_job` | Start a bulk job from up to 10,000 addresses sent inline. | 1 credit per unique definite result |
| `get_bulk_job` | Follow a bulk job: progress, counts by status and when it finished. | Free |

## Connect a client

Point your MCP client at `https://api.email-validation.org/mcp` and send your API key as a Bearer token. The [setup guide](https://email-validation.org/docs/mcp/) has step-by-step instructions.

1. **Create an API key**: Sign up (you get 500 free credits) and create a key in your dashboard.
2. **Add the server**: Add a remote MCP server with the URL above and an Authorization header with your key.
3. **Ask your agent**: For example: "Check whether these sign-up addresses can receive mail and list the ones to remove."

Client configuration

```json
{
  "mcpServers": {
    "email-validation": {
      "url": "https://api.email-validation.org/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}
```

## Limits and safety

- Up to 500 requests per second per account after your first purchase (20 before), shared with the REST API.
- Each check waits at most 15 seconds; slower checks return unknown and are free.
- Give an agent its own API key with a daily credit cap, and revoke it when you no longer need it.
- Machine-readable details: the [server card](https://email-validation.org/.well-known/mcp/server-card.json) and the [AI catalog](https://email-validation.org/.well-known/ai-catalog.json).
- OpenAPI 3.1 REST API: [email verification API](https://email-validation.org/email-verification-api/).

## Frequently asked questions

**Can AI agents use email-validation.org?**

Yes. Our MCP server lets MCP-compatible AI clients validate addresses with your API key. It uses the same credits, limits and free-unknown rule as the API.

**Which MCP transport does the server use?**

It is a remote server that speaks Streamable HTTP and keeps no session state between requests. Clients authenticate every request with an API key in the Authorization header.

**Does the MCP server cost extra?**

No. Tool calls use the same credits as the REST API: one credit per definite result, and unknown results are free.