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x402 Format Checker

by com.crewofthecaptain
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Server Details

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

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Status
Healthy
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL

TDQS

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Available Tools

7 tools
list_types
Read-only
Inspect

List the available checks, price, network and payment details (free). Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base.

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

validate_email
Read-onlyIdempotent
Inspect

Email address syntax (dot-atom local part, LDH domain; no DNS). 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.

ParametersJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. captain@crewofthecaptain.com
validate_eu_vat
Read-onlyIdempotent
Inspect

EU VAT number: per-country format (offline, no VIES); PL also NIP 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.

ParametersJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. PL5260250274
validate_iban
Read-onlyIdempotent
Inspect

IBAN: country length + ISO 13616 mod-97 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.

ParametersJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. PL61109010140000071219812874
validate_pl_nip
Read-onlyIdempotent
Inspect

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.

ParametersJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. 5260250274
validate_pl_pesel
Read-onlyIdempotent
Inspect

Polish PESEL: checksum + encoded birth date and sex. 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.

ParametersJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. 44051401359
validate_pl_regon
Read-onlyIdempotent
Inspect

Polish REGON: 9 or 14 digits + 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.

ParametersJSON Schema
NameRequiredDescriptionDefault
valueYesString to check, e.g. 123456785

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 7 tool updates
    • First observedlist_types
    • First observedvalidate_email
    • First observedvalidate_eu_vat
    • First observedvalidate_iban
    • First observedvalidate_pl_nip
    • First observedvalidate_pl_pesel
    • First observedvalidate_pl_regon

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