Independent technical audit

apistax.io

Overall AI readiness score

A combined result across all audit signals.

Average

AI readiness audit: 11/5/2026Public technical data

About the site

APIstax is a provider of secure REST APIs built and hosted in Austria. It offers APIs for HTML to PDF conversion, Swiss QR invoices, EPC, SPAYD, PAY by square and HCT QR codes, VAT verification, geocoding, barcode generation and PDF to PDF/A conversion. All APIs use JSON requests and responses and are documented via OpenAPI, with a dashboard for API keys and quotas, plus Java, PHP and Quarkus clients.

Category:: Developer tools

Written by AI from the site’s llms.txt and homepage.

Overall AI readiness assessment

How ready apistax.io is for AI systems

73/100

APIstax was independently audited by llmsmap. apistax.io currently scores 73/100 for AI readiness. The result combines AI-specific files, crawler policy, sitemap discovery, structured homepage data, and—when available—the mobile Google Lighthouse technical profile.

Audit context

llms.txt is accessible and contains 1,176 tokens. No accessible llms-full.txt was detected, so deeper context still has to be assembled from regular pages. No separate ai.txt policy was detected; it is optional, but can clarify training, retrieval, and attribution preferences.

robots.txt is available. 11 of 11 tracked AI bots are not blocked. Declared sitemaps: 0. The homepage exposes Schema.org types Product, SoftwareApplication, Review, FAQPage; 8 OpenGraph tags were found and markup completeness is 90%.

The Google Lighthouse measurement is still collecting. Once complete, performance, accessibility, technical quality, SEO, and experimental browser-agent signals will be added with a limited weight.

Confirmed strengths

Accessible llms.txt
Schema.org: Product, SoftwareApplication
Complete social metadata

Priority improvements

1Add llms-full.txt for richer first-party context.
2Declare the current sitemap.xml in robots.txt.

llms.txt tokens1,176

llms-full.txt tokens—

ai.txt

sitemap.xml

Google Lighthouse technical profile

The background queue is collecting mobile Performance, Accessibility, Best Practices, SEO, and experimental browser-agent signals.

Collecting data

AI readiness checks

Machine-readable files, crawler policy, discovery, and homepage markup.

llms.txt

File found and accessible

https://apistax.io/llms.txt

llms-full.txt

Full version was not found

ai.txt

ai.txt file was not found

robots.txt

File found

https://apistax.io/robots.txt

Sitemap in robots.txt

Sitemap is not declared in robots.txt

Schema.org (JSON-LD)

Types: Product, SoftwareApplication, Review, FAQPage

OpenGraph90%

8 OG tags found

AI bot access

Based on robots.txt analysis

GPTBotAllowed

OAI-SearchBotAllowed

ChatGPT-UserAllowed

Google-ExtendedAllowed

ClaudeBotAllowed

Claude-SearchBotAllowed

Claude-UserAllowed

BytespiderAllowed

CCBotAllowed

PerplexityBotAllowed

Perplexity-UserAllowed

OpenGraph tags

Social preview metadata found on the homepage.

Markup completeness: 90%

og:typeobject

og:titleHome

og:descriptionAPIstax - Secure and reliable APIs for your common business needs

og:urlhttps://apistax.io/

og:site_nameAPIstax - Secure and reliable APIs

og:imagehttps://apistax.io/user/assets/opengraph.png

og:image:width1200

og:image:height600

Schema.org markup

Structured entities and properties exposed on the homepage.

Types found: 4 · Properties: 4

ProductSoftwareApplicationReviewFAQPage

nameAPIstax

descriptionSecure and reliable APIs for your common business needs

imagehttps://apistax.io/user/assets/opengraph.png

authorMaria A. from HA2 GmbH

# APIstax

> APIstax provides secure, reliable REST APIs (HTML to PDF, Swiss QR Invoice, EPC QR, VAT validation, geocoding, barcodes, and more). Built and hosted in Austria.

## Key Information

* All APIs use JSON requests/responses and are documented via OpenAPI.
* Dashboard / account management available at [https://app.apistax.io](https://app.apistax.io).

## Available APIs
* **HTML to PDF**: Generate PDF files using HTML content as request payload. [https://apistax.io/docs/html-to-pdf](https://apistax.io/docs/html-to-pdf)
* **EPC QR Code**: Generate EPC QR Codes to use it on your invoices and payment requests. [https://apistax.io/docs/epc-qr-code](https://apistax.io/docs/epc-qr-code)
* **Swiss QR Invoice**: Generate Swiss QR bills to use it on your invoice documents. [https://apistax.io/docs/swiss-qr-invoice](https://apistax.io/docs/swiss-qr-invoice)
* **Invoice PDF**: Create beautiful PDF invoices just from JSON data with valid e-invoice data included [https://apistax.io/docs/invoice-pdf](https://apistax.io/docs/invoice-pdf)
* **VAT Verification**: Validate VAT numbers for EU countries, Switzerland, Norway, Iceland and United Kingdom. [https://apistax.io/docs/vat-verification](https://apistax.io/docs/vat-verification)
* **Consumer Price Indexes**: List various, always up-to-date indexes like consumer price index for many countries. [https://apistax.io/docs/indexes](https://apistax.io/docs/indexes)
* **Geocoding**: Convert a known address to geo-coordinates. [https://apistax.io/docs/geocode-search](https://apistax.io/docs/geocode-search)
* **Reverse Geocoding**: Convert geo-coordinates to a postal address. [https://apistax.io/docs/geocode-reverse](https://apistax.io/docs/geocode-reverse)
* **Barcode Generation**: Generate barcodes from a wide range of different formats. [https://apistax.io/docs/barcode](https://apistax.io/docs/barcode)
* **PDF to PDF/A**: Convert PDF documents to valid, compliant and archivable PDF/A documents. [https://apistax.io/docs/pdf-to-pdf-a](https://apistax.io/docs/pdf-to-pdf-a)
* **SPAYD QR Code**: Generate Short Payment Code QR codes to enable fast, standardized bank transfers using IBAN-based payment data. [https://apistax.io/docs/spayd-qr-code](https://apistax.io/docs/spayd-qr-code)
* **PAY by square QR Code**: Create PAY by square QR codes for invoices, retail, and donations, enabling quick bank transfers through supported banking apps. [https://apistax.io/docs/pay-by-square-qr-code](https://apistax.io/docs/pay-by-square-qr-code)
* **HCT QR Code**: Generate HCT QR codes for Hungary’s instant payment system to enable fast, bank-to-bank transfers via standardized QR payments. [https://apistax.io/docs/hct-qr-code](https://apistax.io/docs/hct-qr-code)

## Documentation

* **Interactive API Docs**: [https://apistax.io/docs](https://apistax.io/docs)
* **OpenAPI UI**: [https://api.apistax.io/openapi/](https://api.apistax.io/openapi/)
* **All APIs Overview**: [https://apistax.io/apis](https://apistax.io/apis)
* **Raw OpenAPI specification (JSON)**: [https://api.apistax.io/q/openapi/](https://api.apistax.io/q/openapi/)

## Developer Resources

* **Interactive Documentation**: [https://apistax.io/docs](https://apistax.io/docs)
* **OpenAPI UI**: [https://api.apistax.io/openapi/](https://api.apistax.io/openapi/)
* **Raw OpenAPI specification (JSON)**: [https://api.apistax.io/q/openapi/](https://api.apistax.io/q/openapi/)
* **Postman Collection**: [https://www.postman.com/apistax/apistax/overview](https://www.postman.com/apistax/apistax/overview)
* **Java Client**: [https://github.com/APIstax/client-java](https://github.com/APIstax/client-java)
* **Quarkus Client**: [https://github.com/quarkiverse/quarkus-apistax](https://github.com/quarkiverse/quarkus-apistax)
* **PHP Client**: [https://github.com/APIstax/client-php](https://github.com/APIstax/client-php)

## Policies & Legal

* **Imprint**: [https://apistax.io/imprint](https://apistax.io/imprint)
* **Terms of Use**: [https://apistax.io/terms-of-use](https://apistax.io/terms-of-use)
* **Privacy Policy**: [https://apistax.io/privacy-policy](https://apistax.io/privacy-policy)

## Dashboard & Account

* **Dashboard / Login / Registration**: [https://app.apistax.io](https://app.apistax.io)

  * Manage API keys, quotas and subscriptions.
  * See usages

## Support

* **Support**: Contact details in the Imprint

## Optional

* **Blog**: [https://apistax.io/blog](https://apistax.io/blog)
* **Pricing**: [https://apistax.io/pricing](https://apistax.io/pricing)

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### Notes

* For fast LLM context, prioritize: **Available APIs**, **Documentation**, **OpenAPI spec**, and **Developer Resources**.
* Links in the **Optional** section are lower priority.

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