Every agent-payable API.

Check a SHA-256 against a Securaw/TimeChain2 event. Reports registry checks and direct-file Bitcoin proof separately, with downloadable proof when available. Missing events and mismatches are billable results. Pending/unavailable is NOT Bitcoin confirmed. Legacy receipts without direct-file proofs are explicitly identified. No arbitrary-chain verification. Idempotency-Key required.

Check a URL before fetching it: is it alive, final URL after redirects, HTTP status, content type, HTML title, and whether robots.txt allows your user-agent. Link checker and fetch preflight for agents.

Is this UK company legit and safe to deal with? One-call due-diligence check from Companies House: profile, directors and their track record at other companies (phoenix-company check), beneficial owners (PSCs), charges, insolvency, overdue filings and risk flags, with a source link for every fact.

Is this UK company legit and safe to deal with? One-call due-diligence check from Companies House: profile, directors and their track record at other companies (phoenix-company check), beneficial owners (PSCs), charges, insolvency, overdue filings and risk flags, with a source link for every fact. Accepts a company name or number.

Checks agent DIDs and wallet addresses against US Treasury OFAC sanctions lists, returning risk scoring and compliance flags.

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.

Call before installing packages suggested by a language model. Returns, for each npm or PyPI package name, whether it actually exists in the registry, whether it is deprecated or yanked, and — when the name is not found — the closest real package names. Catches hallucinated dependencies (slopsquatting) before an agent installs them. Never inspects package contents and never returns a safety verdict.

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.

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.

Prüft die Watch sofort und speichert neue Alarme nach erfolgreicher Zahlung. Die verifizierte Zahleradresse ist der Eigentümer; Ergebnisse und gespeicherte Daten sind strikt auf diesen Zahler begrenzt.

Call when an agent needs whether a string has a BIC/SWIFT shape. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-bic first.

Call when an agent needs whether a number passes Luhn and matches amex. Nothing is stored. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-card-amex first.

Call when an agent needs whether a card-shaped number passes Luhn. Nothing is stored. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-card-any first.

Call when an agent needs whether a number passes Luhn and matches diners. Nothing is stored. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-card-diners first.

Call when an agent needs whether a number passes Luhn and matches discover. Nothing is stored. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-card-discover first.

Call when an agent needs whether a number passes Luhn and matches jcb. Nothing is stored. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-card-jcb first.

Call when an agent needs whether a number passes Luhn and matches mastercard. Nothing is stored. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-card-mastercard first.

Call when an agent needs whether a number passes Luhn and matches unionpay. Nothing is stored. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-card-unionpay first.

Call when an agent needs whether a number passes Luhn and matches visa. Nothing is stored. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-card-visa first.

Call when an agent needs whether a string is a hex color. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-color-hex first.

Call when an agent needs whether a string is an hsl() color. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-color-hsl first.

Call when an agent needs whether a string is one of a small CSS color name set. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-color-named first.

Call when an agent needs whether a string is an rgb() color. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-color-rgb first.

Call when an agent needs whether a string is a 6-field cron expression. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-cron-6 first.

Call when an agent needs whether a string is a 5-field cron expression. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-cron-5 first.

Call when an agent needs whether a string is a real YYYY-MM-DD date. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-date-date first.

Call when an agent needs whether a string is an ISO datetime with a Z suffix. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-date-datetime first.

Call when an agent needs whether a string is an ISO-8601 duration. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-date-duration first.

Call when an agent needs whether a string is 13-digit Unix milliseconds. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-date-unix-ms first.

Call when an agent needs whether a string is 10-digit Unix seconds. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-date-unix-s first.

Check declared MCP tool contracts before an upgrade. Compare required names and exact input/output schema digests with a supplied server snapshot, protocol version and transport. No server contact, semantic schema-subtyping proof or official conformance certification.

Call when an agent needs whether a 13-digit EAN passes Luhn. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-ean-13 first.

Call when an agent needs whether an 8-digit EAN passes Luhn. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-ean-8 first.

Call when an agent needs whether an email with a plus tag is syntactically allowed. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-email-plus-ok first.

Call when an agent needs whether an email is rejected because the local part contains a plus tag. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-email-plus-reject first.

Call when an agent needs whether an email address has a usable syntax. No mailbox lookup. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-email-rfc first.

Call when an agent needs whether an email has a strict alphabetic TLD. No mailbox lookup. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-email-strict-tld first.

Call when an agent needs whether a string is an ASCII DNS hostname. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-hostname first.

Call when an agent needs whether a string is a hostname that may use Unicode labels. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-hostname-idn first.

Call when an agent needs whether a string is an IPv4 CIDR prefix. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-ip-cidr4 first.

Call when an agent needs whether a string is an IPv6 CIDR prefix. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-ip-cidr6 first.

Call when an agent needs whether a string is an IPv4 address. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-ip-ipv4 first.

Call when an agent needs whether a string is an IPv6 address. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-ip-ipv6 first.

Call when an agent needs whether an IBAN matches a known country length and mod-97. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban first.

Call when an agent needs whether an IBAN is a mod-97-valid AD number of length 24. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ad first.

Call when an agent needs whether an IBAN is a mod-97-valid AE number of length 23. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ae first.

Call when an agent needs whether an IBAN is a mod-97-valid AL number of length 28. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-iban-al first.

Call when an agent needs whether an IBAN is a mod-97-valid AT number of length 20. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-iban-at first.

Call when an agent needs whether an IBAN is a mod-97-valid AZ number of length 28. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-az first.

Call when an agent needs whether an IBAN is a mod-97-valid BA number of length 20. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ba first.