Audits a website for AI agent and AI crawler readiness from caller-supplied inputs: robots.txt, HTML, headers, llms.txt, sitemap lastmod, /.well-known. Names the policy per AI token (GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Google-Extended, Gemini-User, KagiBot, Kagi-User, Applebot-Extended, Bytespider, CCBot, Amazonbot, meta-externalagent) and reports what it could not measure instead of guessing. Makes no outbound request.

Checks a web page for accessibility (a11y) problems from caller-supplied HTML: document language, title, image alt text, form labels, heading order, zoom, landmarks, link text, table headers, iframes, autocomplete. Anchored in the German accessibility act (BFSG), with the WCAG success criteria named per finding as a professional classification, not as a legal claim. States what a pattern parser cannot decide. Not legal advice.

Calculates when a legal deadline ends in Germany (Fristende, due date) under §§ 187-193 BGB, the German Civil Code: event vs commencement start (§ 187), end by days/weeks/months/years including a missing day of month (§ 188), and postponement to the next working day when it falls on a Sunday, Saturday or public holiday (§ 193). With a federal state the statewide holidays are honoured, without one only Sunday/Saturday; that limit is stated. Returns an end date, not a count of working days.

Liefert für ein Jahr und ein deutsches Bundesland die gesetzlichen Feiertage mit Datum, Wochentag und Fundstelle im jeweiligen Landesgesetz. Feiertage sind in Deutschland Landesrecht — bundesweit geregelt ist allein der 3. Oktober. Regional eingeschränkte Feiertage (Mariä Himmelfahrt in Bayern, Fronleichnam in Sachsen und Thüringen) sind als solche gekennzeichnet und gelten NICHT im ganzen Land. Alle 16 Länderlisten am Gesetzestext gelesen, jede mit Quelle und Prüfdatum.

Berechnet ein Fristende nach §§ 187–193 BGB: Ereignis- vs. Beginnfrist (§ 187), Fristende nach Tagen/Wochen/Monaten/Jahren inkl. fehlendem Monatstag (§ 188), Verlegung auf den nächsten Werktag bei Sonntag/Sonnabend/Feiertag (§ 193). § 193 ist ortsabhängig — mit Bundesland werden die landesweiten Feiertage berücksichtigt, ohne Land nur Sonntag/Sonnabend (die Grenze wird ausgewiesen). Nachrechenbar mit Fundstelle, keine Rechtsberatung.

Returns the public holidays (bank holidays, Feiertage) of a German federal state for one year, each with date, weekday and the citation in that state's own act. Public holidays in Germany are state law; only 3 October is federal. Regionally limited ones (Assumption Day in Bavaria, Corpus Christi in Saxony and Thuringia) are flagged and do NOT apply statewide. All 16 state lists read against the statute, each with source and check date.

Validates an IBAN: country prefix, length, segment-by-segment structure and the ISO 7064 MOD 97-10 check digits, recomputing the correct ones when they are wrong. Checked against the SWIFT IBAN Registry, which also yields bank and branch identifiers and names territories sharing a prefix (Jersey uses GB). Reports every check with status, not only failures, and states what it does not check: existence, bank name, national BBAN check digits. No outbound request.

Prüft aus vom Aufrufer geliefertem HTML die acht Angabengruppen des § 5 DDG (Name/Anschrift/Vertretung, Kontakt inkl. E-Mail, Aufsichtsbehörde, Handelsregister, Berufsangaben, USt-IdNr, Abwicklung, audiovisuelle Dienste). Bedingte Pflichten, deren Anwendbarkeit sich aus dem HTML nicht entscheiden lässt, werden als unbekannt ausgewiesen — nie als Mangel. Befund mit Fundstelle, kein Rechtsrat.

Checks a website imprint (Impressum, legal notice) in caller-supplied HTML against the eight groups of mandatory disclosures in § 5 DDG, the German imprint statute: name/address/representation, contact incl. e-mail, supervisory authority, commercial register, professional details, VAT ID, wind-up, audiovisual services. Conditional duties the HTML cannot decide come back as unknown, never as a defect. Finding with citation, not legal advice.

Checks a German invoice (Rechnung) for the ten mandatory details of § 14 (4) UStG, the German VAT act, from caller-supplied invoice text. If a total up to 250 EUR is detectable, the small-amount simplifications (Kleinbetragsrechnung, § 33 UStDV) apply and dispensable details come back as not_applicable, not as a defect. Also states whether a structured e-invoice format (XRechnung/CII, UBL, ZUGFeRD) is present: a format finding only, no claim about any duty or deadline. No tax advice.

Misst die Lesbarkeit eines deutschen Textes nach Flesch-Reading-Ease (Anpassung Toni Amstad) und den vier Wiener Sachtextformeln. Gibt beide Werte, die Kennzahlen (Sätze, Wörter, Silben, Satzlänge) und die Formeln zum Nachrechnen zurück. Die Silbenzählung ist eine offengelegte Näherung (Vokalgruppen-Heuristik), keine amtliche Zertifizierung.

Generates an llms.txt file for a website from caller-supplied sitemap entries and page titles, spec-compliant with llmstxt.org: one H1, a blockquote summary, H2 sections with link lists and an optional Optional section. Produces the artefact, does not assess it. No outbound request - the caller supplies the pages.

Says whether cold outreach - cold email, phone, SMS or postal mail - is allowed, conditional or prohibited in a given country, with the legal basis (GDPR, PECR, CAN-SPAM, CASL, Spam Act, POPIA and national equivalents) and the conditions that must hold. Covers DE, AT, CH, GB, US, CA, AU, NZ, ZA. A country that is not covered is refused before the paywall. A risk map with citations, not legal advice.

Finds the contradictions on a caller-supplied product page that make a buying agent abort: offer price in JSON-LD or Microdata against the prices visible in the text, structured availability against sold-out and add-to-cart signals, JSON-LD against Microdata, variants that cannot be told apart, shipping cost and return period as data or only as prose. Returns a verdict with every contradiction and gap explained. Machine extractability, not price law; no checkout, no outbound request.

Scores how readable a German text is: Flesch Reading Ease (Amstad adaptation) plus the four Wiener Sachtextformel variants. Returns both scores, the underlying counts (sentences, words, syllables, sentence length) and the formulas, so the result can be recomputed. Syllable counting is a disclosed approximation (vowel-group heuristic), not an official certification.

Lints and validates a caller-supplied robots.txt against RFC 9309 and reports every check, not only the failures: group structure, product token charset, path patterns, special characters, other records, size limit. Given a user agent and URLs it recomputes the allow/disallow decision per URL, naming the winning rule, its octet length and the tiebreak that applied. Where the RFC is silent or contradicts itself, the reading used is stated. Makes no outbound request.

Validates the format of an EU VAT number (VAT ID, USt-IdNr, reverse charge) against the European Commission's published format table: 27 member states plus GB and XI. Format only, never validity - no VIES call, and the response says so. Reports every published pattern with its match status, enforces note 4 for ES, honours case sensitivity, and names the source's own contradictions: BE prints two patterns while note 2 denies one, RO prints nine digits while its description allows two to ten.

Aggregated demand data from one provider's own paid x402 routes: requests and price requests per route and day, outcomes by HTTP status, settled payments with conversion and repeat rate, caller classes and country distribution. Not a market sample. Raw identifiers and payer addresses are never returned. Measurement started 2026-07-23.