FabTally Valid

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Validation suite: EU VAT (VIES), IBAN mod-97, email (MX+disposable), geo place lookup, VIN decode.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "FabTally Valid": {
      "url": "https://valid.fabtally.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (5)

• validate_vat

  PAID $0.003 (x402, USDC on Base). FLAGSHIP. Validate an EU/EEA VAT number: give {country_code, vat_number} and get a per-country format + checksum pre-check AND a LIVE lookup against the official VIES service — returning valid/registered plus the registered company name & address when VIES provides them (cached ~1h to shield the flaky VIES). Without payment returns the x402 challenge; pass x_payment to settle.

  Parameters:

  • country_code (required) — string — 2-letter EU VAT country code (e.g. IE, DE, FR; GB/XI for Northern Ireland; GR accepted as EL).
  • vat_number (required) — string — The VAT number without the country prefix (prefix is tolerated and stripped).
  • x_payment — string — x402 payment payload (base64) for this PAID validation. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• validate_iban

  PAID $0.001 (x402, USDC on Base). Validate an IBAN: give {iban} and get ISO 13616 length + mod-97 checksum validation, the country, the human-formatted grouping, and the bank identifier (e.g. German Bankleitzahl, UK bank code + sort code) extracted from the BBAN where derivable. Pure-offline. Without payment returns the x402 challenge.

  Parameters:

  • iban (required) — string — The IBAN (spaces/dashes tolerated), e.g. DE89 3704 0044 0532 0130 00.
  • x_payment — string — x402 payment payload (base64) for this PAID validation. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• validate_email

  PAID $0.002 (x402, USDC on Base). Validate an email address: give {email} and get RFC-ish syntax validation, a LIVE MX-record (DNS) existence check, disposable/throwaway-domain detection (bundled blocklist), and a role-address flag (info@, admin@…). STATELESS and non-PII — the address is never stored and no SMTP mailbox is probed. Without payment returns the x402 challenge; pass x_payment to settle.

  Parameters:

  • email (required) — string — The email address to validate.
  • x_payment — string — x402 payment payload (base64) for this PAID validation. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• geo_lookup

  PAID $0.002 (x402, USDC on Base). Resolve a place against a bundled open dataset (no per-day API limits). Give {query:"Munich, Bavaria, Germany"} OR {country, state, city} and get normalized names, ISO 3166-1/-2 codes, the country→subdivision→city hierarchy, population and coordinates, and confirmation the place exists. Without payment returns the x402 challenge; pass x_payment to settle.

  Parameters:

  • city — string — City name.
  • query — string — Free-text place, e.g. "Munich, Bavaria, Germany" or "France".
  • state — string — State/province/subdivision name or code (within the country).
  • country — string — Country name or ISO 3166-1 alpha-2/alpha-3 code.
  • x_payment — string — x402 payment payload (base64) for this PAID validation. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• decode_vin

  PAID $0.002 (x402, USDC on Base). Decode a Vehicle Identification Number: give {vin} and get a 17-char format + North-American check-digit validation and a full decode via NHTSA's public vPIC API — make, model, year, body class, engine, plant country and more. VIN-only (never plate→owner). Without payment returns the x402 challenge; pass x_payment to settle.

  Parameters:

  • vin (required) — string — A 17-character Vehicle Identification Number (excludes I, O, Q).
  • x_payment — string — x402 payment payload (base64) for this PAID validation. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

Publisher website Repository

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.