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x402 Format Checker

by com.crewofthecaptain
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validate_pl_nip

Read-onlyIdempotent

Polish NIP tax id: 10 digits + weighted mod-11 checksum. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base. Returns {type, valid, normalized, reason}; the input is never echoed or stored and personal identifiers are masked.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. 5260250274

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

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