MillionVerifier MCP by usefulapi

io.usefulapiPublished by usefulapi.ioOfficial publisherv1.7.4Updated Nov 7, 2026

Check MillionVerifier credits, verify emails and monitor confirmed bulk verification jobs.

The publisher's own server: Ably MCP by usefulapi

VerifiedStreamable HTTPWeb executableCommunication & CollaborationBusiness & Commerce

Overview

AI-generated overview

Hosted MillionVerifier server that lets an assistant check credits, verify single emails and monitor bulk email verification jobs.

What you can do
  • Check remaining MillionVerifier verification credits and monthly tool-call usage
  • Verify a single email address in real time, with a confirmation flag because it spends credits
  • Upload a CSV of 1 to 1,000 emails to start a bulk verification job and get a file ID
  • Read a bulk file's status, progress and aggregate result counts by file ID
  • Manage the wrapper subscription: upgrade to Pro or Pro+, cancel, or record a feature request
When to use it
Useful when you need to clean or validate an email list before outreach, or check whether an address is deliverable, without leaving the assistant. Also handy for tracking the progress of an already submitted bulk verification job.
Requirements
Remote MCP endpoint added by URL only; no API key or Authorization header in the client config. Sign-in happens through the hosted OAuth page, which asks for your own MillionVerifier credentials. A free tier allows 50 tool calls per month; paid plans are billed through Stripe.
Before you install
Verification calls and bulk uploads spend MillionVerifier credits and require confirm:true; a timed-out request may still have created a job or charge, so check the dashboard before resubmitting. Unknown or catch-all results do not prove deliverability. The server also offers subscription upgrade and cancellation tools that affect billing, and your MillionVerifier credentials are entered on a third-party hosted sign-in page.

Installation

In SourceWeft

  1. Open MillionVerifier MCP by usefulapi in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.usefulapi%2Fmillionverifier/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "millionverifier-by-usefulapi": {
      "type": "http",
      "url": "https://millionverifier.usefulapi.io/mcp"
    }
  }
}

README

MillionVerifier MCP by usefulapi

https://millionverifier.usefulapi.io/mcp

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://millionverifier.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http millionverifier https://millionverifier.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
json
{  "mcpServers": {    "millionverifier": {      "url": "https://millionverifier.usefulapi.io/mcp"    }  }}

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your MillionVerifier credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/millionverifier/

Connect your own MillionVerifier credentials through the hosted sign-in page.

Tools

ToolTypeWhat it does
millionverifier_creditsreadCheck MillionVerifier credits
millionverifier_verify_emailwriteVerify an email with MillionVerifier
millionverifier_upload_filewriteStart MillionVerifier bulk verification
millionverifier_file_inforeadRead MillionVerifier bulk file status
millionverifier_usage_statusmetaUsage status (free-tier meter)
millionverifier_request_featuremetaRequest a missing feature
millionverifier_upgrademetaUpgrade to Pro or Pro+
millionverifier_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro (per user)$9/mo or $90/yr (2 months free)Unlimited*

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with millionverifier_upgrade (it returns a Stripe Checkout link). Cancel any time with millionverifier_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running millionverifier_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT

Source: servers/millionverifier/README.md at commit 4046075

Tools

4

millionverifier_credits

Check MillionVerifier credits

Read remaining MillionVerifier credits without starting verification.

Takes no parameters.

millionverifier_verify_email

Verify an email with MillionVerifier

Verify one email using MillionVerifier's real-time API. Can spend credits and requires confirm:true. The vendor timeout is 10 seconds; this charged GET is never retried. Unknown/catch-all results do not establish deliverability. If the response is lost, check the dashboard before submitting again.

Parametersemailrequiredconfirm

millionverifier_upload_file

Start MillionVerifier bulk verification

Create and upload a CSV of 1–1,000 emails for bulk verification. Can start a billable job and spend credits; requires confirm:true. Returns a file ID for millionverifier_file_info. Never retries or automatically polls. A timed-out submission may still create a job; check the dashboard before repeating it. Download individual results in MillionVerifier.

Parametersemailsrequiredconfirmfilename

millionverifier_file_info

Read MillionVerifier bulk file status

Read an existing bulk file's verification status, progress and aggregate result counts using its file ID. Includes failed/canceled jobs without starting, stopping or re-verifying anything. Does not download individual email results. Wait between polls.

Parametersfile_idrequired

Version history

11
  1. v1.7.4LatestNov 7, 2026
  2. v1.6.3Nov 5, 2026
  3. v1.6.2Nov 5, 2026
  4. v1.6.1Nov 4, 2026
  5. v1.6.0Nov 3, 2026
  6. v1.5.1Nov 3, 2026
  7. v1.4.0Nov 1, 2026
  8. v1.2.0Oct 31, 2026
  9. v1.1.0Oct 31, 2026
  10. v1.0.2Oct 30, 2026
  11. v1.0.0Oct 30, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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