203 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Validate a securities ISIN (ISO 6166): format, check digit, issuing country and embedded CUSIP (US/CA, with its own check) or SEDOL (GB/IE). Computed locally; nothing stored.
Validate a Spanish Social Security affiliation number (12 digits: province, number, control) and return the province of registration. Computed locally; nothing stored.
BIC/SWIFT code validation and parsing: bank, country, location and branch codes, test-code flag.
EU VAT number format validation for all member states (plus Spanish check digit). Does not query VIES.
Live DNS lookup for a domain: returns name, type and records[]. Supported record types: A, AAAA (addresses as strings), MX ({exchange, priority} objects), TXT (each record an array of its strings), NS and CNAME (hostname...
ISO 13616 IBAN mod-97 checksum validation, with optional BIC (ISO 9362) format check.
Working days / next working day in a date range: weekends + gazetted public holidays
Official monthly inflation (HICP, annual rate of change, all items) for EU countries, the euro area and the EU from Eurostat. Give a country code (NL, DE, FR, EA20, EU27_2020) and the number of recent months. Use it for...
Validate JSON data against a JSON Schema (drafts 4 to 2020-12, with format checks): valid flag and every error with its exact path and failing rule. Check API responses or LLM structured output.
Detect and validate a crypto address before sending funds: EVM (EIP-55 checksum), Solana, Bitcoin (legacy, P2SH, SegWit, Taproot), Litecoin, Dogecoin, Tron and Cosmos bech32, with its type and network. Computed locally.
dnspeek (Tanod) domain inspection (one section): DNS records, SPF/DMARC/DKIM/MTA-STS deliverability findings and the TLS cert. Heuristic, not an audit.
Use before spending tokens, money or crawler capacity fetching an unfamiliar web resource. Resolves redirects (manually, bounded, re-validated per hop) and returns deterministic HTTP/resource facts — final URL, status, c...
Validate an ISBN-10 or ISBN-13 checksum (hyphens/spaces ignored) and report which format it is.
Offline validator for a Romanian CUI (company tax ID). Strips an optional 'RO' prefix, applies weights 7-5-3-2-1-7-3-2 to the digits preceding the check digit (right-to-left), sums the weighted products, multiplies by 10...
Validate and normalise any phone number worldwide: valid/possible, E.164 and national formats, country, type (mobile, fixed line, toll-free, VoIP...), original carrier, location and time zones. Offline, instant. For CRM,...
Check an email address before sending: RFC syntax and normalisation, live DNS (domain exists, MX records, accepts mail, null MX), disposable/throwaway domain and role-account (info@, support@) flags. No SMTP probing. For...
Payload Check: data-quality filter for agents. Send any payload (tool/API output, scraped page, LLM answer, generated code, JSON, CSV) and get a 0-100 quality score, pass/warn/fail, tags and concrete issues: invalid or t...
Convert a color between hex, RGB, and HSL. Accepts "#1a2b3c", "rgb(26,43,60)", or "hsl(210,40%,17%)".
Validate CSV structure: consistent column counts across rows, properly closed quotes, delimiter detection. Returns row/column counts and any structural errors. Pure CPU.
Resolve an RFC 6901 JSON Pointer (e.g. /items/0/name) against a JSON value. Returns the value or found:false.
Parse a semantic version, or compare two (a vs b → -1/0/1, with greater/lesser flags).
Heuristic user-agent string parser: browser, version, OS, device class, and bot detection.
Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable / free-webmail / role-account flags and a deliverability signal. No SMTP probing of individual mailbo...
Currency exchange rates and FX conversion, official ECB reference rates for USD, EUR, GBP, JPY and 25 more. Use to convert an amount between currencies with an official, citable rate: the European Central Bank's referenc...