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BillionVerify MCP server

online · 100% uptime
by BillionVerify·io.github.BillionVerify/billionverify-mcp·v1.1.1
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Email verification for AI agents: verify single or bulk emails, check credits and history.

A87/100grade A
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Safety scan
A87/100

full report

Adoption
Growing

0 stars17 downloads/wk

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BillionVerify tools (11, 3 write)

write = sends, deletes, buys or posts
  • create_webhookwrite actionFree

    Create a webhook endpoint for verification lifecycle notifications.

  • delete_webhookwrite actionFree

    Permanently delete a webhook endpoint by identifier. The endpoint stops receiving notifications immediately.

  • get_account_balanceFree

    Get the current credit balance for the authenticated account.

  • get_download_urlFree

    Get a signed download URL for completed results, or CSV content when filtered or rebuilt from history.

  • get_task_statusFree

    Get the current status of an asynchronous verification task.

  • get_verification_historyFree

    List verification history for the authenticated account.

  • get_verification_statsFree

    Get aggregated verification statistics for the authenticated account.

  • health_checkFree

    Check the health of the BillionVerify MCP server.

  • list_webhooksFree

    List all webhook endpoints configured for the authenticated account.

  • verify_batch_emailsFree

    Verify 1 to 50 email addresses in one request and return a verdict for each. Split longer lists into chunks of 50. Uses credits from the connected BillionVerify account.

  • verify_single_emailwrite actionFree

    Verify whether a single email address can receive mail. Checks syntax and the domain's mail servers, and optionally the mailbox over SMTP. Uses credits from the connected BillionVerify account.

Public scan report

scanner v0.1.10 · 2026-10-13 · same rubric, same numbers if you re-run it

1 high
  • Code scan3 source files scanned25/25
  • Live reliabilityremote reachable in 1277ms20/20
  • Tool poisoning11 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 3 write-action tools with no auth3/15
  • Maintenancelast push 0 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year9/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 87/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How BillionVerify compares

Against every graded Email MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
87/100
higher than 80% of 916 Email servers
Tools
11
the typical Email server has 7
Tools that change things
27%
typical: 25%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Email server answers 100%
Response time
63 ms
faster than 92% of 609 Email servers
Downloads a week
17
more than 4% of 235 Email servers with a package

What its tools let an agent do: 8 read · 1 create · 1 change · 1 delete

Install BillionVerify in Claude Code, Cursor or VS Code

claude mcp add --transport http billionverify-mcp https://mcp.billionverify.com/mcp
Add to Cursor

What the publisher says

From the BillionVerify repository's README, as published. We do not edit it. Read it on GitHub

BillionVerify MCP Server — TypeScript

Connect any AI assistant to BillionVerify email verification via the Model Context Protocol. Built with the official MCP TypeScript SDK.

Option 1 — Hosted Server (No Installation)

Use BillionVerify's hosted MCP server. There is nothing to install and no API key to paste: you sign in with your BillionVerify account over OAuth, and the connection is tied to that account.

The hosted server does not accept API keys (?api_key=, BV-API-KEY or Authorization: Bearer are all rejected). If you want to use an API key, use Option 2.

Detailed step-by-step guide: docs/connect-chatgpt-claude.md.

ChatGPT (web)

  1. Settings → Apps & Connectors → Advanced settings → turn on Developer mode.
  2. Settings → Apps & Connectors → Create.
  3. Name BillionVerify, MCP server URL https://mcp.billionverify.com/mcp, authentication OAuth → create.
  4. Sign in to BillionVerify in the window that opens and approve access.
  5. In a new chat, click + → Developer mode → enable BillionVerify.

Claude (claude.ai / Claude Desktop)

  1. Customize → Connectors → + → Add custom connector.
  2. Name BillionVerify, URL https://mcp.billionverify.com/mcp → Add (leave Advanced settings empty).
  3. Click Connect, sign in to BillionVerify and approve access.
  4. In a chat, click + → Connectors and make sure BillionVerify is on.

Team / Enterprise: an Owner adds the connector under Organization settings → Connectors, then each member clicks Connect.

Claude Code

claude mcp add --transport http billionverify https://mcp.billionverify.com/mcp

Then run /mcp inside Claude Code, select billionverify and finish the sign-in in your browser.

Cursor

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project), then click Connect next to the server in Settings → MCP:

{
  "mcpServers": {
    "billionverify": {
      "url": "https://mcp.billionverify.com/mcp"
    }
  }
}

Option 2 — Self-Hosted (TypeScript / Node.js)

Run your own MCP server using this TypeScript implementation.

Prerequisites

  • Node.js 18+

Run via npx (no install)

BILLIONVERIFY_API_KEY=your_api_key npx billionverify-mcp

Claude Desktop config (self-hosted)

{
  "mcpServers": {
    "billionverify": {
      "command": "npx",
      "args": ["-y", "billionverify-mcp"],
      "env": {
        "BILLIONVERIFY_API_KEY": "your_api_key_here"
      }
    }
  }
}

Install globally

npm install -g billionverify-mcp
billionverify-mcp

Install from source

git clone https://github.com/BillionVerify/billionverify-mcp.git
cd billionverify-mcp
npm install
npm run build
npm start

Environment Variables

Available Tools

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

BillionVerify: common questions

Is BillionVerify MCP server safe?
Yes, by our scan: it is graded A (87/100). Read the BillionVerify safety report
How do I install BillionVerify?
It runs remotely at mcp.billionverify.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does BillionVerify need an API key?
Yes. The registry entry asks for BILLIONVERIFY_API_KEY.
Is BillionVerify maintained?
The last commit was 22 days ago (2026-10-13). The latest release is v1.1.1.
Is BillionVerify up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of BillionVerify?
Servers from other publishers that do the same job: MX Probe MCP server, Agenticmail MCP server and Tomba MCP Server. Compare all BillionVerify alternatives.
How does BillionVerify compare with other Email MCP servers?
safety score 87/100 (higher than 80% of 916 Email servers); tools 11 (the typical Email server has 7); tools that change things 27% (typical: 25%. Fewer write tools means less an agent can break). Full comparison.

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