Server data from the Official MCP Registry
Verify email addresses with a live SMTP mailbox check, check phone number formats and email domains.
About
Verify email addresses with a live SMTP mailbox check, check phone number formats and email domains.
Remote endpoints: streamable-http: https://simpleverifier.com/api/mcp
Security Report
Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
Endpoint verified · Requires authentication · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Found in Source Code
Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-ahmedmkarrar-simpleverifier": {
"url": "https://simpleverifier.com/api/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
SimpleVerifier MCP server
A remote Model Context Protocol server that gives ChatGPT, Claude, Cursor, VS Code and other MCP clients email and phone checks as tools.
- Endpoint:
https://simpleverifier.com/api/mcp(Streamable HTTP) - Auth: OAuth sign-in (ChatGPT, claude.ai, Claude Code) or
Authorization: Bearer <API key> - Plan: MCP and API access need a SimpleVerifier Pro, Business or Agency plan. Tool calls count against the plan's monthly API calls. Pricing
- Docs: https://simpleverifier.com/docs/mcp
This repo holds the registry manifest (server.json) and ready-to-copy client configs. The server itself is hosted; there is nothing to install or run.
Tools
| Tool | What it does |
|---|---|
verify_email | One address: valid, risky or invalid, with a reason. Syntax, domain, disposable and live mailbox (SMTP) checks. |
verify_emails | Up to 100 addresses in one call, deduplicated. Returns every result, or a job_id for get_job_results. |
get_job_results | Progress and per-address results of a verify_emails job, paged. |
check_phone_format | Format, E.164 form, country and numbering-plan line type. A format check only: it never says whether a number is in service. |
check_domain | A domain's MX, SPF and DMARC records, disposable status, and an optional catch-all probe. |
get_usage | Your plan, what it includes, this month's usage and the rate limit. |
Only valid means the mail server confirmed the mailbox. Anything unconfirmed (catch-all domains, providers that hide mailbox status, servers that don't answer) comes back risky.
Connect
Claude Code
claude mcp add --transport http simpleverifier https://simpleverifier.com/api/mcp
# then run /mcp inside a session to sign in, or pass a key:
claude mcp add --transport http simpleverifier https://simpleverifier.com/api/mcp --header "Authorization: Bearer YOUR_API_KEY"
ChatGPT and claude.ai: add a custom connector with the URL https://simpleverifier.com/api/mcp, choose OAuth, then sign in on the SimpleVerifier screen. Step-by-step: https://simpleverifier.com/docs/mcp
Cursor, VS Code, Claude Desktop, Windsurf: copy the matching file from configs/:
| Client | File | Goes in |
|---|---|---|
| Cursor | cursor.mcp.json | ~/.cursor/mcp.json or .cursor/mcp.json |
| VS Code | vscode.mcp.json | .vscode/mcp.json (asks for the key once, stores it securely) |
| Claude Desktop | claude_desktop_config.json | Settings > Developer > Edit config (uses mcp-remote, needs Node.js) |
| Windsurf / Devin Desktop | windsurf.mcp_config.json | ~/.config/devin/mcp_config.json (older builds: ~/.codeium/windsurf/mcp_config.json) |
Create an API key at https://simpleverifier.com/api-keys. Keys start with sv_live_. Keep them out of shared config files and repositories.
Try it with curl
curl https://simpleverifier.com/api/mcp \
-H "Authorization: Bearer $SIMPLEVERIFIER_KEY" \
-H "Content-Type: application/json" \
-H "Accept: application/json, text/event-stream" \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"verify_email","arguments":{"email":"jane@company.com"}}}'
Related
- REST API: https://simpleverifier.com/docs/api
- SDKs: Node.js, Python, PHP, Go, Ruby
- Support: support@simpleverifier.com
License
MIT for the files in this repo. The hosted service is covered by the SimpleVerifier terms.
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