hash-hash x402 REST usage
Compute an MD5, SHA-1, SHA-256 or SHA-512 hex digest of text.
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Compute an MD5, SHA-1, SHA-256 or SHA-512 hex digest of text.
Canonical digests — sha256, sha512-256 and blake2b of text or canonical JSON — Genesis402 / UnyKorn Operator Network
Cheap structural IBAN validation: ISO 13616 checksum + per-country structure/length. Returns valid plus, on rejection, a granular error_type (invalid_checksum, invalid_length, invalid_structure, invalid_country), the cou...
Base transaction explained from the chain: success or reverted, block and time, from, to, ETH value, method selector, gas used and fee, contract created, and every ERC-20 transfer decoded with token symbol and amount. In...
Luhn checksum validation for digit strings for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover o...
ISBN-10/ISBN-13 checksum validation for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the...
French SIRET (14-digit business establishment number) Luhn checksum validation. Note: the rare La Poste SIREN exception to the standard rule is not applied.
US ABA bank routing number (9-digit) checksum validation.
ISIN (ISO 6166 security identifier) Luhn checksum validation.
ISBN-10 or ISBN-13 checksum validation (auto-detected by length).
IMEI (15-digit mobile device identifier) Luhn checksum validation.
EAN-8 or EAN-13 barcode checksum validation (auto-detected by length).
Check whether an isolated cart can reach checkout and expose blockers without payment. It never logs in, creates an order or finalizes checkout.
Hash any UTF-8 string and get sha256, sha512, sha384, sha1, md5, CRC32 and base64 checksum in one call. Computed locally, no upstream, no API key.
Page change detection - website change monitoring, detect webpage changes, url change detection. Fetches a public URL and reports whether the page changed: the sha256 fingerprint of the text a reader sees, the HTTP statu...
Validate an Iranian national ID (کد ملی, code melli) by recomputing its check digit. Use it before accepting an identity number from a form, a customer, or an API payload. Returns whether the number is valid, and the par...
Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the captu...
Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the captu...
Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the captu...
Text hashes: SHA-256, SHA-1, SHA-512 and SHA-384 hex digests of the exact text you send (UTF-8), plus its byte length. Deduplication keys, integrity checks and fingerprints. $0.01 per call.
IBAN validation: mod-97 checksum, country, expected length, bank/branch code split and a formatted version. Payment-form validation without a banking API. $0.01 per check.
Payment card number check: Luhn checksum, card brand from the prefix (Visa, Mastercard, Amex, Discover, JCB, Diners, UnionPay), length validity and masked form. Nothing is stored. Form validation for checkout flows. $0.0...
Checksums of a file at a URL (up to 5 MB): SHA-256, SHA-1 and MD5-free SHA-384 hex digests, the SRI string (sha384-…), byte size, content type, last-modified and ETag, plus the final URL after redirects. Verify downloads...
SHA-256, SHA-384, SHA-512 or SHA-1 of any text in one GET, without an LLM or a local tool: pass text and get the digest as hex or base64. curl: GET /hash?text=hello (algo sha256|sha384|sha512|sha1, default sha256; encodi...