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OpenAPI Specification
openapi: 3.2.0
info:
title: HelpMyAgent Vat API
version: v1
description: Pay-per-call APIs designed to be discovered and consumed by AI agents.
x-guidance: HelpMyAgent exposes pay-per-call APIs. Choose an operation by its documented purpose, coverage and use_when guidance when available. Use the declared input schema and method. Each paid operation declares its decimal USD price in x-payment-info. An unpaid call returns HTTP 402 with x402 v2 payment requirements; submit a valid payment and retry the same request to receive the business JSON result. Do not use an endpoint outside its declared geographic coverage or documented use case.
contact:
url: https://helpmyagent.com
email: hi@helpmyagent.com
servers:
- url: https://api.helpmyagent.com
description: HelpMyAgent public API gateway
tags:
- name: vat
description: Vat
paths:
/v1/vat/eu/validate:
post:
tags:
- vat
summary: EU VAT Validation
description: Validates an EU VAT number through the European Commission VIES service, with explicit unavailable status.
operationId: v1VatEuValidate
externalDocs:
description: HelpMyAgent endpoint documentation
url: https://helpmyagent.com/en/apis/vat/eu/validate
responses:
'200':
description: Successful response
content:
application/json:
schema:
type: object
properties:
vat_number:
type: string
description: Structured value returned for “vat number” as defined by this API contract.
country_code:
type: string
description: Structured value returned for “country code” as defined by this API contract.
number:
type: string
description: Structured value returned for “number” as defined by this API contract.
status:
type: string
description: Normalized endpoint or source status.
valid:
type:
- boolean
- 'null'
description: Whether the supplied identifier passed the endpoint’s validation rules.
request_date:
type:
- string
- 'null'
description: Structured value returned for “request date” as defined by this API contract.
name:
type:
- string
- 'null'
description: Publicly available company, person, buyer or record name for this result.
address:
type:
- string
- 'null'
description: Structured value returned for “address” as defined by this API contract.
request_identifier:
type:
- string
- 'null'
description: Structured value returned for “request identifier” as defined by this API contract.
checked_at:
type: string
description: UTC timestamp at which HelpMyAgent performed the check.
source:
type: string
description: Structured value returned for “source” as defined by this API contract.
additionalProperties: false
required:
- vat_number
- country_code
- number
- status
- valid
- request_date
- name
- address
- request_identifier
- checked_at
- source
description: Structured result returned by the vat/eu/validate API.
example:
vat_number: FR39356000000
country_code: FR
number: '39356000000'
status: unavailable
valid: null
request_date: null
name: null
address: null
request_identifier: null
checked_at: '2026-09-07T16:50:12+02:00'
source: ec.europa.eu:vies
'402':
description: Payment required when payment is enabled for the endpoint.
4XX:
description: Client request error.
5XX:
description: Server or upstream provider error.
x-helpmyagent-pricing:
mode: fixed
price: '0.005'
currency: USD
billingPolicy:
charge_on: valid_result
no_charge_on_empty_result: true
no_charge_on_error: true
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.005'
protocols:
- x402: {}
accepts:
- scheme: exact
network: eip155:8453
amount: '5000'
asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
payTo: '0xEaB9543AcF710a24fe096913A428E7d066c88F59'
maxTimeoutSeconds: 60
extra:
assetTransferMethod: eip3009
name: USD Coin
version: '2'
- scheme: exact
network: xrpl:0
amount: '0.005'
asset: 524C555344000000000000000000000000000000
payTo: rUXKCZetEbwQc1i5vkJL6SNXYK3hG7Fezy
maxTimeoutSeconds: 600
extra:
sourceTag: 804681468
issuer: rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De
x-helpmyagent-coverage:
countries:
- EU
x-helpmyagent-use-when:
- Validate an EU VAT number before invoicing or supplier onboarding.
- You need to validate an EU VAT number through the European Commission VIES service before invoicing or onboarding.
- You have either a complete VAT number or a country code plus national number.
x-helpmyagent-avoid-when:
- You need invoice-level consistency for a French company identifier; use company/fr/invoice-check.
- You need broader supplier identity, compliance or IBAN checks; use company/fr/supplier-verification.
x-helpmyagent-limitations:
- Validation depends on VIES availability and on the member-state data returned through that service.
- A valid VAT number does not prove bank-account ownership, solvency or absence of fraud.
x-helpmyagent-example-queries:
- Validate an EU VAT number before invoicing or supplier onboarding.
x-helpmyagent-sources:
- code: ec.europa.eu:vies
name: European Commission VIES
url: https://ec.europa.eu/taxation_customs/vies/
x-helpmyagent-freshness:
mode: source_dependent
x-helpmyagent-mcp-annotations:
readOnlyHint: false
destructiveHint: false
idempotentHint: false
openWorldHint: false
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
vat_number:
type: string
pattern: ^(?:AT|BE|BG|CY|CZ|DE|DK|EE|EL|ES|FI|FR|GR|HR|HU|IE|IT|LT|LU|LV|MT|NL|PL|PT|RO|SE|SI|SK|XI)[A-Za-z0-9]{2,14}$
description: Complete EU VAT number including the two-letter country prefix; alternatively provide country_code and number separately.
country_code:
type: string
enum:
- AT
- BE
- BG
- CY
- CZ
- DE
- DK
- EE
- EL
- ES
- FI
- FR
- GR
- HR
- HU
- IE
- IT
- LT
- LU
- LV
- MT
- NL
- PL
- PT
- RO
- SE
- SI
- SK
- XI
description: EU/VIES country prefix used when the VAT number is supplied in separate parts.
number:
type: string
pattern: ^[A-Za-z0-9]{2,14}$
description: National VAT identifier body without the country prefix, used together with country_code.
additionalProperties: false
anyOf:
- required:
- vat_number
- required:
- country_code
- number
description: Structured input parameters for the vat/eu/validate API.
example:
vat_number: FR39356000000
x-helpmyagent-demo:
url: https://api.helpmyagent.com/demo/vat/eu/validate
isSnapshot: true
generatedAt: '2026-09-07T14:50:12+00:00'
sourceAsOf: null
x-helpmyagent-discovery:
llms: https://helpmyagent.com/llms.txt
openapi: https://api.helpmyagent.com/openapi.json
capabilities: https://helpmyagent.com/capabilities.json
mcp: https://helpmyagent.com/mcp
api_catalog: https://helpmyagent.com/.well-known/api-catalog
pricing: https://helpmyagent.com/pricing.json
x402: https://helpmyagent.com/.well-known/x402
x402_service: https://helpmyagent.com/.well-known/x402-service.json
health: https://helpmyagent.com/health