API Ninjas offers over 120 unique APIs across various categories, enabling developers to build real applications with real data.
Tools
Analyze Text Sentiment
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.
Generate Barcode Image
Tool to generate a barcode image for specified text. Use when you need a barcode image (PNG or SVG) of custom data.
Bin Lookup
Tool to look up bank information from a Bank Identification Number. Use after you have a BIN to fetch issuer details (brand, type, country).
Get Bitcoin Price And Market Data
Tool to retrieve the latest Bitcoin price and 24-hour market data. Use when you need real-time Bitcoin metrics in USD.
Calculate Calories Burned
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.
Calculate Mortgage
Tool to calculate mortgage payments and breakdowns. Use when you need to determine monthly/annual payments, including mortgage, property tax, HOA, and insurance components.