# BOW Analyzer > Free, stateless Bag of Words analysis for text and public webpages. Measures word and bigram frequency, percentages, focus-phrase coverage, vocabulary size, and Zipf-distribution diagnostics. Compares two inputs without storing submitted content. ## Agent API - OpenAPI specification: https://textanalysis.tools/openapi.json - Human-readable API documentation: https://textanalysis.tools/api-docs - Analyze one input: POST https://textanalysis.tools/api/v1/analyze - Compare two inputs: POST https://textanalysis.tools/api/v1/compare Requests use application/json. Supported languages are English, Russian, and Ukrainian. The API is public, rate-limited, and requires no API key. Use it for analysis, not for claims about search-engine rankings. ## Main pages - Free analyzer: https://textanalysis.tools/ - Text analysis tools: https://textanalysis.tools/tools - Word frequency counter: https://textanalysis.tools/tools/word-frequency-counter - Keyword density checker: https://textanalysis.tools/tools/keyword-density-checker - How to calculate word frequency: https://textanalysis.tools/how-to-calculate-word-frequency - Keyword density formula and limitations: https://textanalysis.tools/keyword-density-formula - Bag of Words model guide: https://textanalysis.tools/bag-of-words-model - Bag of Words vs Word2Vec: https://textanalysis.tools/bag-of-words-vs-word2vec