{ "openapi": "3.0.3", "info": { "title": "agentshield.live facts", "version": "1.0.0", "description": "Paid fact routes. Unpaid calls return 402. Unknown input returns 404 and is not charged. Prices are 0.001 to 0.01 USDC on Base." }, "servers": [ { "url": "https://agentshield.live" } ], "paths": { "/vat": { "get": { "summary": "Standard VAT percent for a country. Not a product rate.", "operationId": "vat", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/holiday": { "get": { "summary": "Whether a date is a public holiday.", "operationId": "holiday", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/iban": { "get": { "summary": "IBAN checksum and format. Does not confirm the account exists.", "operationId": "iban", "parameters": [ { "name": "iban", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/fx": { "get": { "summary": "ECB daily reference rate. Not a live price.", "operationId": "fx", "parameters": [ { "name": "from", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/ean": { "get": { "summary": "EAN checksum and GS1 prefix. Not a product.", "operationId": "ean", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/isbn": { "get": { "summary": "ISBN checksum. Not a book.", "operationId": "isbn", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/bic": { "get": { "summary": "BIC format split. Does not confirm the bank.", "operationId": "bic", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/weekday": { "get": { "summary": "Weekday, ISO week, and quarter.", "operationId": "weekday", "parameters": [ { "name": "date", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/currency": { "get": { "summary": "ISO currency name and minor units. Not a rate.", "operationId": "currency", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/isin": { "get": { "summary": "ISIN checksum. Not a security or a price.", "operationId": "isin", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/lei": { "get": { "summary": "LEI checksum. Does not confirm the entity.", "operationId": "lei", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/calling": { "get": { "summary": "Telephone country calling code.", "operationId": "calling", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/vin": { "get": { "summary": "VIN check digit and manufacturer prefix.", "operationId": "vin", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/container": { "get": { "summary": "ISO 6346 container check digit.", "operationId": "container", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/cusip": { "get": { "summary": "CUSIP checksum.", "operationId": "cusip", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/sedol": { "get": { "summary": "SEDOL checksum.", "operationId": "sedol", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/imei": { "get": { "summary": "IMEI checksum.", "operationId": "imei", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/aba": { "get": { "summary": "ABA routing checksum.", "operationId": "aba", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/tz": { "get": { "summary": "IANA time-zone offset on a date.", "operationId": "tz", "parameters": [ { "name": "zone", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/easter": { "get": { "summary": "Western Easter Sunday.", "operationId": "easter", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/worldcup": { "get": { "summary": "Stored men's World Cup final.", "operationId": "worldcup", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/olympic": { "get": { "summary": "Stored Summer Olympics host city.", "operationId": "olympic", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/division": { "get": { "summary": "Name of a country's top football division.", "operationId": "division", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/tld": { "get": { "summary": "Country-code top-level domain.", "operationId": "tld", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/doy": { "get": { "summary": "Day of year.", "operationId": "doy", "parameters": [ { "name": "date", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/eip55": { "get": { "summary": "EIP-55 address checksum.", "operationId": "eip55", "parameters": [ { "name": "address", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/chain": { "get": { "summary": "EVM chain id to name.", "operationId": "chain", "parameters": [ { "name": "id", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/incoterm": { "get": { "summary": "Incoterms 2020 meaning.", "operationId": "incoterm", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/issn": { "get": { "summary": "ISSN checksum.", "operationId": "issn", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/workday": { "get": { "summary": "Add or subtract weekdays.", "operationId": "workday", "parameters": [ { "name": "date", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/iata": { "get": { "summary": "IATA airport code to city.", "operationId": "iata", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/airline": { "get": { "summary": "IATA airline code to name.", "operationId": "airline", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/country": { "get": { "summary": "ISO country code to English name.", "operationId": "country", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/capital": { "get": { "summary": "Listed capital of a country.", "operationId": "capital", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/lang": { "get": { "summary": "ISO 639-1 language name.", "operationId": "lang", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mrz": { "get": { "summary": "Passport MRZ check digit.", "operationId": "mrz", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/orcid": { "get": { "summary": "ORCID checksum.", "operationId": "orcid", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/gln": { "get": { "summary": "GLN check digit.", "operationId": "gln", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/vatid": { "get": { "summary": "German VAT-id checksum.", "operationId": "vatid", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/icao": { "get": { "summary": "Aircraft nationality mark to state.", "operationId": "icao", "parameters": [ { "name": "mark", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/lines": { "post": { "summary": "Receipt photo to JSON line items. The image is not stored.", "operationId": "lines", "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object", "properties": { "image_base64": { "type": "string" }, "media_type": { "type": "string" } }, "required": [ "image_base64" ] } } } }, "responses": { "200": { "description": "Line items." }, "402": { "description": "Payment required." } } } }, "/cas": { "get": { "summary": "CAS Registry checksum. Does not confirm the substance.", "operationId": "cas", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" }, "description": "CAS Registry Number." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/element": { "get": { "summary": "Element symbol to IUPAC name and atomic number.", "operationId": "element", "parameters": [ { "name": "symbol", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Element symbol, such as Fe." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/si": { "get": { "summary": "SI prefix to factor. Not a unit conversion.", "operationId": "si", "parameters": [ { "name": "prefix", "in": "query", "required": true, "schema": { "type": "string" }, "description": "SI prefix name or symbol." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/roman": { "get": { "summary": "Standard Roman numeral, 1 to 3999.", "operationId": "roman", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Roman numeral or an integer from 1 to 3999." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/molar": { "get": { "summary": "Molar mass from CIAAW abridged atomic weights. Not a measured sample mass.", "operationId": "molar", "parameters": [ { "name": "formula", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Simple formula, such as H2O." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mmsi": { "get": { "summary": "MMSI to ITU maritime identification administration.", "operationId": "mmsi", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/tail": { "get": { "summary": "Aircraft registration to nationality prefix.", "operationId": "tail", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/symbol": { "get": { "summary": "ISO currency code to CLDR English symbol.", "operationId": "symbol", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/imo": { "get": { "summary": "IMO ship number checksum. Not a ship name.", "operationId": "imo", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/postcode": { "get": { "summary": "Postal-code format check only. Not an address.", "operationId": "postcode", "parameters": [ { "name": "country", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mime": { "get": { "summary": "File extension to Apache mime.types media type. Not a content sniff.", "operationId": "mime", "parameters": [ { "name": "ext", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/semver": { "get": { "summary": "Semantic Versioning 2.0.0 precedence. Not a package registry.", "operationId": "semver", "parameters": [ { "name": "left", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/uuid": { "get": { "summary": "RFC 9562 UUID version and variant. Not a registry lookup.", "operationId": "uuid", "parameters": [ { "name": "uuid", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/http": { "get": { "summary": "IANA HTTP status code meaning. Not a live server status.", "operationId": "http", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/base32": { "get": { "summary": "RFC 4648 or Crockford base32 length check. Decoded bytes are not returned.", "operationId": "base32", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/euro": { "get": { "summary": "Stored men's European Championship final. Not a live score.", "operationId": "euro", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/winter": { "get": { "summary": "Stored Winter Olympics host city. Not a live event.", "operationId": "winter", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/bowl": { "get": { "summary": "Stored Super Bowl winner for the game year. Not a live score.", "operationId": "bowl", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/abn": { "get": { "summary": "Australian Business Number checksum. Not a registry lookup.", "operationId": "abn", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/bech32": { "get": { "summary": "BIP-173 Bech32 checksum. Decoded payload is not returned. Not a balance.", "operationId": "bech32", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/upc": { "get": { "summary": "UPC check digit. Not a product lookup.", "operationId": "upc", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/sscc": { "get": { "summary": "GS1 SSCC check digit. Not a shipment lookup.", "operationId": "sscc", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/isni": { "get": { "summary": "ISNI check digit. Not a person or work lookup.", "operationId": "isni", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/gtin": { "get": { "summary": "GTIN check digit for 8, 12, 13, or 14 digits. Not a product lookup.", "operationId": "gtin", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/gsin": { "get": { "summary": "GSIN check digit. Not a shipment lookup.", "operationId": "gsin", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/unix": { "get": { "summary": "Unix seconds to a UTC date. Not a timezone conversion.", "operationId": "unix", "parameters": [ { "name": "seconds", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/leap": { "get": { "summary": "Whether a year is a leap year.", "operationId": "leap", "parameters": [ { "name": "year", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/age": { "get": { "summary": "Completed years between two dates.", "operationId": "age", "parameters": [ { "name": "from", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "to", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/julian": { "get": { "summary": "Julian day number for a date.", "operationId": "julian", "parameters": [ { "name": "date", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/weekstart": { "get": { "summary": "Monday of the ISO week containing a date.", "operationId": "weekstart", "parameters": [ { "name": "date", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/luhn": { "get": { "summary": "Luhn check result. Not a card brand or an account.", "operationId": "luhn", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mod97": { "get": { "summary": "Mod-97 remainder for a digit string. Not an IBAN lookup.", "operationId": "mod97", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/damm": { "get": { "summary": "Damm check digit result.", "operationId": "damm", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/verhoeff": { "get": { "summary": "Verhoeff check digit result.", "operationId": "verhoeff", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mod43": { "get": { "summary": "Code 39 mod-43 check character.", "operationId": "mod43", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/prepay": { "get": { "summary": "Check an identifier and amount format before paying. Does not confirm the account or that the amount is owed.", "operationId": "prepay", "parameters": [ { "name": "id", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "amount", "in": "query", "required": false, "schema": { "type": "string" } }, { "name": "currency", "in": "query", "required": false, "schema": { "type": "string" } }, { "name": "kind", "in": "query", "required": false, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/temp": { "get": { "summary": "Exact Celsius, Fahrenheit, and Kelvin conversion. Not a thermometer reading.", "operationId": "temp", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "from", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/length": { "get": { "summary": "Exact metre, foot, and inch conversion. Not a survey foot.", "operationId": "length", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mass": { "get": { "summary": "Exact kilogram and avoirdupois pound conversion. Not a troy pound or a live scale.", "operationId": "mass", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/data": { "get": { "summary": "Decimal and binary byte prefix factors. Not a live disk size.", "operationId": "data", "parameters": [ { "name": "prefix", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/angle": { "get": { "summary": "Exact degree and radian conversion as a multiple of pi. Not a rounded decimal.", "operationId": "angle", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "from", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/emailform": { "get": { "summary": "Stored HTML email shape only. Not proof the mailbox exists.", "operationId": "emailform", "parameters": [ { "name": "email", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mac": { "get": { "summary": "RFC 7042 hyphen-separated EUI-48 shape. Not an OUI lookup.", "operationId": "mac", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/hex": { "get": { "summary": "Even-length RFC 4648 base16 check. Decoded bytes are not returned.", "operationId": "hex", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/base64": { "get": { "summary": "RFC 4648 base64 alphabet and padding check. Decoded bytes are not returned.", "operationId": "base64", "parameters": [ { "name": "code", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/percent": { "get": { "summary": "RFC 3986 percent-encode or decode a US-ASCII string. Non-ASCII returns 404.", "operationId": "percent", "parameters": [ { "name": "mode", "in": "query", "required": true, "schema": { "type": "string" } }, { "name": "text", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/cidr": { "get": { "summary": "IPv4 prefix to network, mask, all-ones host field, and address count. Not a route lookup.", "operationId": "cidr", "parameters": [ { "name": "prefix", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/ipv6": { "get": { "summary": "RFC 5952 canonical IPv6 text. Not a host lookup.", "operationId": "ipv6", "parameters": [ { "name": "address", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/mapped": { "get": { "summary": "IPv4 address to IPv4-mapped IPv6 text. Not a live host.", "operationId": "mapped", "parameters": [ { "name": "address", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/ip6arpa": { "get": { "summary": "RFC 3596 IP6.ARPA nibble name. Not a live DNS lookup.", "operationId": "ip6arpa", "parameters": [ { "name": "address", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/inaddr": { "get": { "summary": "RFC 1035 IN-ADDR.ARPA name. Not a live DNS lookup.", "operationId": "inaddr", "parameters": [ { "name": "address", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/pressure": { "get": { "summary": "Exact pascal and bar conversion. psi is not stored. Not a live gauge.", "operationId": "pressure", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal value." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Stored unit name." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/volume": { "get": { "summary": "Exact litre, cubic metre, and imperial gallon conversion. The US gallon is not stored.", "operationId": "volume", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal value." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Stored unit name." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/speed": { "get": { "summary": "Exact metre per second, kilometre per hour, and knot conversion. Not a live speed.", "operationId": "speed", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal value." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Stored unit name." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/energy": { "get": { "summary": "Exact joule, watt-hour, and named calorie conversion. A bare calorie is not stored.", "operationId": "energy", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal value." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Stored unit name." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/force": { "get": { "summary": "Exact newton and pound-force conversion. Not a live scale.", "operationId": "force", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal value." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Stored unit name." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/utf8": { "get": { "summary": "UTF-8 bytes of one Unicode scalar value. RFC 3629. Not a character name.", "operationId": "utf8", "parameters": [ { "name": "cp", "in": "query", "required": true, "schema": { "type": "string" }, "description": "One Unicode scalar value. U+233B4 is the RFC 3629 section 7 example." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/utf16": { "get": { "summary": "UTF-16 code units of one Unicode scalar value. RFC 2781. Not a character name.", "operationId": "utf16", "parameters": [ { "name": "cp", "in": "query", "required": true, "schema": { "type": "string" }, "description": "One Unicode scalar value. U+12345 is the RFC 2781 section 5 example." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/punycode": { "get": { "summary": "RFC 3492 section 7.1 Punycode test vector, copied exactly. Not a DNS lookup.", "operationId": "punycode", "parameters": [ { "name": "punycode", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Exact RFC 3492 section 7.1 Punycode string." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/soundex": { "get": { "summary": "National Archives Soundex code. Not a person lookup.", "operationId": "soundex", "parameters": [ { "name": "name", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Surname letters. Washington is the National Archives example." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/qp": { "get": { "summary": "RFC 2045 section 6.7 quoted-printable example only. Not a mail gateway.", "operationId": "qp", "parameters": [ { "name": "text", "in": "query", "required": true, "schema": { "type": "string" }, "description": "The RFC 2045 section 6.7 sentence only." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/paper": { "get": { "summary": "ISO 216 A or B trimmed size from the published millimetre table. Not a shop price.", "operationId": "paper", "parameters": [ { "name": "size", "in": "query", "required": true, "schema": { "type": "string" }, "description": "A0 to A10, B0 to B10, 2A0, or 4A0." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/point": { "get": { "summary": "Exact PostScript or CSS point. 1 point is 1/72 inch. Not a Didot point.", "operationId": "point", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal length." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "pt, in, or mm." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/pica": { "get": { "summary": "Exact pica. 1 pica is 12 points and 1/6 inch. Not a cicero.", "operationId": "pica", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal length." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "pc, pt, in, or mm." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/envelope": { "get": { "summary": "Published C, DL, C6/C5, or E4 size in millimetres. Not a shop price.", "operationId": "envelope", "parameters": [ { "name": "size", "in": "query", "required": true, "schema": { "type": "string" }, "description": "C0 to C10, DL, C6/C5, or E4." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/texpt": { "get": { "summary": "Exact TeX point. 1 TeX point is 1/72.27 inch. Not a PostScript point.", "operationId": "texpt", "parameters": [ { "name": "value", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Decimal length." }, { "name": "unit", "in": "query", "required": true, "schema": { "type": "string" }, "description": "texpt, in, or mm." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/gcd": { "get": { "summary": "Greatest common divisor of two non-negative integers. gcd(0, 0) returns 404. Not a stored divisor table.", "operationId": "gcd", "parameters": [ { "name": "a", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Non-negative integer. 252 is the Wikipedia example." }, { "name": "b", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Non-negative integer. 105 is the Wikipedia example." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/lcm": { "get": { "summary": "Least common multiple of two positive integers. Zero returns 404. Not a stored multiple table.", "operationId": "lcm", "parameters": [ { "name": "a", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Positive integer. 4 is the Wikipedia example." }, { "name": "b", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Positive integer. 6 is the Wikipedia example." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/factorial": { "get": { "summary": "Exact factorial for n from 0 through 20. Not a stored table.", "operationId": "factorial", "parameters": [ { "name": "n", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Integer from 0 through 20. 5! is the Wikipedia example 120." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/binomial": { "get": { "summary": "Exact binomial coefficient for n from 0 through 20. Not a stored Pascal triangle.", "operationId": "binomial", "parameters": [ { "name": "n", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Integer from 0 through 20." }, { "name": "k", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Integer from 0 through n. C(4, 2) is the Wikipedia example 6." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/prime": { "get": { "summary": "Primality by trial division for an integer from 0 through 1000000. No stored prime table.", "operationId": "prime", "parameters": [ { "name": "n", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Integer from 0 through 1000000. 7 is prime on the Wikipedia trial-division page." } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/statement": { "get": { "summary": "Settled calls from the paying wallet for one month. Not a tax invoice.", "operationId": "statement", "parameters": [ { "name": "month", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required. USDC on Base." }, "404": { "description": "Unknown input. Payment is not charged." } } } }, "/vies": { "get": { "summary": "EU VIES answer for a VAT id at request time. Not a certificate.", "operationId": "vies", "parameters": [ { "name": "id", "in": "query", "required": true, "schema": { "type": "string" } } ], "responses": { "200": { "description": "Fact JSON." }, "402": { "description": "Payment required." }, "404": { "description": "Registry silent or unknown. Not charged." } } } } } }