API Ninjas
General-purpose utility API collection for text sentiment, financial lookups, calculators, image generation, and reference data.
Covers small developer utilities including sentiment analysis, barcode generation, BIN lookups, mortgage and tax calculators, holiday checks, and domain availability.
Sign in to connect API Ninjas
Sign in to connect an account and start using API Ninjas in your apps.
Example Use Cases
These are example ways Snow can use API Ninjas when building apps with you. This list is meant to show examples, not document every possible capability. Connecting an account does not make Snow run these automatically on its own.
Tool to analyze the sentiment of text. Returns a numerical sentiment score from -1 to 1 and a classification (POSITIVE, WEAK_POSITIVE, NEUTRAL, WEAK_NEGATIVE, or NEGATIVE). Use when you need to determine the emotional tone or sentiment of text content.
Tool to look up bank information from a Bank Identification Number. Use after you have a BIN to fetch issuer details (brand, type, country).
Tool to calculate calories burned for an activity based on duration and body weight. Use when you need to estimate energy expenditure for physical activities.
Tool to calculate mortgage payments and breakdowns. Use when you need to determine monthly/annual payments, including mortgage, property tax, HOA, and insurance components.
Tool to calculate sales tax for a purchase amount at a US location. Use when you need to determine the sales tax for a purchase based on ZIP code or city/state. Premium features include detailed breakdowns by city, county, and special districts.
Tool to check whether an email address is from a disposable email provider. Use when validating user emails prior to sending communications.
Tool to check domain availability and retrieve registration information. Use when you need to verify if a domain is available for registration or get details about an existing domain.
Tool to check if a specific date is a public holiday in a given country. Use when you need to verify holiday status for scheduling, planning, or calendar-related tasks. Returns holiday name if applicable.
Tool to check if a date is a working day in a specific country. Returns whether the date is a working day, accounting for weekends and public holidays. Use when you need to determine if a business is likely to be open on a specific date.
Tool to check spelling and get corrections for text. Returns the original text, corrected version, and detailed corrections with alternative suggestions.