x402 Email Verifier MCP Server

by shaimaiiee-designdev.workers.microtools-x402.x402-email-verifier/email-verifierv0.1.1

Email verification for AI agents: syntax, MX, disposable, role, score. $0.001 USDC/call via x402.

0remoteofficial registry

context tax

~144 tok/turn2 tools

security

97/100

cold start

hosted

freshness

Active2d ago

Our reading of x402 Email Verifier, from the data

x402 Email Verifier is a email MCP server from shaimaiiee-design, listed in the official MCP Registry.

Its 2 tools add about 144 tokens to every model turn, lighter than the email median of 1,511 tokens across 149 measured servers (measured 2026-10-19).

Maintenance is active: the last public signal was 2 days ago (2026-10-17). For comparison, 75% of email servers are active or maintained.

With 0 GitHub stars it ranks #267 of 932 email servers we index.

It runs as a hosted endpoint, so there is nothing to install.

Install x402 Email Verifier MCP server

claude mcp add --transport http x402-email-verifier https://x402-email-verifier.microtools-x402.workers.dev/mcp

{
  "mcpServers": {
    "x402-email-verifier": {
      "url": "https://x402-email-verifier.microtools-x402.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "x402-email-verifier": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://x402-email-verifier.microtools-x402.workers.dev/mcp"
      ]
    }
  }
}

Or add it as a custom connector under Settings → Connectors. The config above bridges via mcp-remote.

{
  "servers": {
    "x402-email-verifier": {
      "type": "http",
      "url": "https://x402-email-verifier.microtools-x402.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "x402-email-verifier": {
      "serverUrl": "https://x402-email-verifier.microtools-x402.workers.dev/mcp"
    }
  }
}

Remote endpoints

streamable-httphttps://x402-email-verifier.microtools-x402.workers.dev/mcp

Context tax

Connecting this server adds ~144 tokens of tool definitions to every model turn (lean, 2 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Model	Per 1,000 turns	With prompt caching
Claude Opus 5.5	$0.576	$0.029
Claude Sonnet 5.5	$0.288	$0.029
Claude Haiku 5.5	$0.014	—

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (2)

email_verify97 tok
Verify an email address: syntax, MX records, disposable-domain and role-address detection, quality score 0-100. Costs $0.001 USDC per call via x402.
health45 tok
Free health check. Returns service status, price and network.

Security signals

97/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Deductions

No security policy (SECURITY.md)-3

Checks

✓Repository hygiene (archived, activity, license, security policy)
✓Tool descriptions (prompt-injection and hidden-text heuristics)
○Package metadata (install scripts, provenance) — pending
○Source scan (secrets, CVEs, risky code) by vectra-guard — pending

Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules

Freshness

Active — last maintenance signal 2d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-17 · 2d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-17 · 2d ago · official registry · v0.1.1

How it compares in Email

Against the most-starred email servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
x402 Email Verifier (this)	0	2	144	Active	hosted
Inbox Zero	12,649	—	not measured	Active	hosted
Useplunk	5,524	—	not measured	Active	local
Google Workspace	3,370	—	not measured	Active	—
OpenOSINT	1,776	—	not measured	Active	local
emailmd	1,382	3	954	Active	local + hosted

All email MCP servers

FAQ

›How do I install the x402 Email Verifier MCP server in Claude Code?

Run: claude mcp add --transport http x402-email-verifier https://x402-email-verifier.microtools-x402.workers.dev/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does x402 Email Verifier require an API key?

No required environment variables are declared in its published metadata.

›Can I use x402 Email Verifier as a remote (hosted) MCP server?

Yes. It is a hosted MCP server; connect to its URL with any client that supports remote MCP.

›Is x402 Email Verifier in the official MCP registry?

Yes, as dev.workers.microtools-x402.x402-email-verifier/email-verifier.

›How many tokens does x402 Email Verifier add to my context?

Its tool definitions total about 144 tokens, resent on every turn.

Sources and method

Official MCP Registry entry: updated 2026-10-17
GitHub repository: fetched 2026-10-19
Tool list (tools/list), measured by us: 2026-10-19
Security signals, computed by us: 2026-10-19
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Editorial standards are owned by Ramachandra Vikas Chamarthi, Founder & AI HPC Architect. Spot an error? Request a correction or claim the listing.