SUB-SDK-001
vatfix-sdk-js
JavaScript SDK

STATUS: PENDING
REGISTRY: https://vatfix.eu
SNAPSHOT: https://vatfix.eu/REGISTRY_SNAPSHOT.json

Registered SDK. Identity governed by VATFIX registry.

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Purpose

JavaScript SDK for VATFix API transport. Emits HTTP requests to VATFix API gateway. Returns API responses.

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What it Accepts

• API key (string)
• Customer email (string)
• VAT number queries: {countryCode: string, vatNumber: string}
• HTTP API requests

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What it Rejects

• Invalid API keys
• Missing required parameters
• Invalid VAT numbers
• Non-string types for countryCode or vatNumber

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What it Returns

• API response passthrough (JSON)
• Error objects on failure
• HTTP status codes: 200, 400, 401, 403, 429, 500

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What it Does NOT do

• Does not execute validation logic
• Does not process payments
• Does not modify VATFIX rules
• Does not cache responses
• Does not provide customer support
• Does not guarantee API availability
• Does not parse validation results
• Does not contain business rules
• Does not contain decision logic
• Does not validate VAT numbers locally

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Termination Conditions

• API success: Response object returned
• API failure: Error object returned
• Invalid input: Error object returned
• Network failure: Error object returned

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Transport Only

This SDK is transport-only. See TRANSPORT_ONLY.md for constraints.

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Last Updated: 2026-01-27