Back to search
45
MCP MCP 2025-11-25 streamable-http

io.github.ryuamarines/email-validator

io.github.ryuamarines/email-validator

Validates email syntax and MX records. x402 payment required (testnet USDC).

Watch this dependency Share evidence report
Uptime
100.0%
3 direct probes · 30d
Response
106ms
last probe
Tools
1
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://faceted-napped-debtless.ngrok-free.dev/email-validator/mcp
Score: 45/100
The server exists but requires sign-in before we can list its tools.
partial Answers the MCP handshake 35/50
The endpoint answered HTTP 403 to an anonymous initialize, so it exists, but we could not list its tools without credentials.
How to earn +15 points
Let anonymous clients discover what the server offers
Answer initialize and tools/list without credentials and require auth only on tools/call. If the whole server must stay private, return a WWW-Authenticate header with resource_metadata pointing at /.well-known/oauth-protected-resource (RFC 9728) so MCP clients can sign in on their own; 2026-07-28 clients identify themselves with a Client ID Metadata Document rather than dynamic registration.
Docs →
n/a Lists tools, resources or prompts 0/30
Not scored: a catalogue only counts once the handshake succeeds.
n/a 3 or more catalogue items 0/10
Not scored: a catalogue only counts once the handshake succeeds.
pass Describes itself 10/10
76 characters; more than 30 earns these points.

Tools · 1

email_validator

Validates email syntax and MX records. x402 payment required (Base mainnet USDC).

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://faceted-napped-debtless.ngrok-free.dev/email-validator/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "io.github.ryuamarines/email-validator": {
      "url": "https://faceted-napped-debtless.ngrok-free.dev/email-validator/mcp",
      "transport": "streamable-http"
    }
  }
}