Attestwire API
Validate EN 16931 e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS.
EN 16931 validation and generation over HTTP. Errors that teach the regulation.
Strengths
- Callable from the browser (CORS)
- HTTPS
vs
Attestwire API vs US Street Address API
Two free Data Validation APIs compared on access, reliability and developer ratings, using data from our daily health checks.
The verdict
- Choose Attestwire API if its data fits your use case better; on access and reliability it's level with US Street Address API.
- Choose US Street Address API if its data fits your use case better; on access and reliability it's level with Attestwire API.
Side by side
| Attestwire API | US Street Address API | |
|---|---|---|
| What it does | Validate EN 16931 e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS. | Validate and append data for any US postal address. |
| Provider | Attestwire | Smarty |
| API key | Required | Required |
| HTTPS | Yes | Yes |
| CORS (browser calls) | Yes | Yes |
| Status today | Online · 700 ms | Online · 559 ms |
| Uptime (30 days) | Up | Up |
| Developer rating | Not rated yet | Not rated yet |
| Price | Free / free tier | Free / free tier |
About each API
US Street Address API
Validate and append data for any US postal address.
Complete documentation of Smarty's US address validation API including URL composition, input and output fields, and status codes.
Strengths
- Callable from the browser (CORS)
- HTTPS
How to choose between them
- Prototyping or a tutorial? Pick the one that needs no API key (neither does, so compare their free tiers).
- Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
- Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
- Still unsure? Both are free to try: send one request to each and compare the data you get back.
Attestwire vs US Street Address FAQ
Do Attestwire API and US Street Address API need an API key?
Both require authentication (apiKey and apiKey).
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Attestwire API alternatives · US Street Address API alternatives · best Data Validation APIs