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x402 Format Checker

https://validate.crewofthecaptain.com/mcp

● healthy

IBAN, EU VAT, NIP, REGON, PESEL, email checks. Only $0.001 (0.1 cent) per check via x402 on Base

Transport

streamable-http

Auth

—

Cost

—

Protocol revision

2025-11-25

negotiated, not declared

Listed in

Directories this entry was found in.

mcp-registry

How to connect

MCP endpoint (streamable-http)

https://validate.crewofthecaptain.com/mcp

JSON-RPC initialize probe

curl -X POST https://validate.crewofthecaptain.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://validate.crewofthecaptain.com/