Interest Rate retrieves central bank policy rates for 22 major economies by country code. It delivers the latest interest rate percentage, central bank name, recorded date, and whether the rate moved up, down, or remained unchanged.

Invoice Generator is an invoice generation API that creates downloadable PDF invoices from party addresses, line items, and payment terms. It computes subtotals with discounts and sales tax, returning an expiring download link.

IP Blacklist Lookup is an IP blacklist check API that tells you whether a given IP address appears on known malicious IP blocklists. Identifies both inbound threats (attackers, spammers) and outbound threats (C2 servers, malware hosts).

IP Demographics combines IP geolocation with Census demographic data to provide demographic information for any IP address. Get location, income, education, and housing data based on the IP's geographic location. Demographics cover US ZIP codes; other locations return the location with demographics set to null.

IP Lookup is an IP address location API that resolves any IP to its country, region, timezone and continent. Paid plans add city, coordinates, postal code, an accuracy radius and an EU-membership flag for compliance routing.

ISBN Validator checks ISBN-10 and ISBN-13 numbers for valid checksums and parses their registration group, publisher, and title parts. Pass any raw book identifier with or without hyphens to inspect normalized digits, format type, and specific rejection reasons.

Job Postings is a jobs API that returns the open positions on a company's public career board. Every job comes back in the same shape: title, department, team, locations, remote and workplace type, employment type, posting date and apply link. Filter by keyword, location, department, employment type, posting date or remote. Paid plans add the full job description and salary ranges where the company publishes them.

Job Search is a jobs API that searches the open positions at thousands of companies at once. Search by job title keywords, location, country, remote work, employment type, posting date or company, and get the newest matching jobs first, each with its title, company, location, country, workplace type, posting date and apply link. Paid plans add salary ranges, a minimum salary filter, larger pages and each job's full description.

Jobs Report provides monthly US employment data including unemployment rate, total employment, labor force participation, and employment by industry sector. The same data released in the monthly BLS jobs report.

JSON Schema Generator is a JSON to JSON Schema API: it inspects sample JSON payloads and generates Draft-07 JSON Schema definitions with inferred types and property formats. It identifies formats like emails and dates, applies custom titles, and lists all properties as required.

JSON Schema Validator is a JSON validator API that tests any JSON object against a JSON Schema you provide, so you can check JSON against its schema before trusting it. It reports pass-fail status and total error count, while paid plans add specific error messages.

JSON to CSV Converter converts an array of JSON objects into structured CSV text. It outputs formatted CSV content, detected column headers, and row counts, with support for custom delimiters like commas, tabs, or pipes.

JSON to JSONP wraps JSON data in a JavaScript callback function to produce valid JSONP output. Pass an object or JSON string with an optional callback identifier to receive the formatted script string.

Julian Day Calculator converts between Gregorian calendar dates and Julian Day Numbers (JDN). Julian Day is a continuous count of days used in astronomy and historical research.

JWT Decoder decodes JWT tokens to reveal header and payload information without performing signature verification. It handles JSON web token decode from any language over REST, so you can inspect claims and expiry without adding a JWT library.

Keyword Extractor is a keyword extraction API that scans raw text or live webpage URLs to extract key terms and their frequencies. It returns up to 50 unique keywords, occurrence counts, total keyword volume, and the top five terms with their percentage share.

Language Detector is a language detection API that identifies the language of any submitted text string. It returns the primary language, its ISO 639-1 code, and candidate matches ranked by confidence scores.

Leet Speak translates plain text into leet speak or reverses obfuscated strings back to standard words. Submit any string with an encode or decode mode to receive the converted text and a count of changed characters.

Text Lemmatizer reduces inflected words in submitted text down to their dictionary base forms. It confirms when valid lemmas exist, while paid plans return full word-by-word mappings.

Levenshtein Distance calculates the minimum number of single-character edits needed to transform one string into another.