hsk_lookup
Look up a Chinese word by simplified characters, traditional characters, or pinyin. Returns all pronunciation forms with meanings, frequency rank, and HSK level. Pinyin input accepts tone marks (hǎo), tone numbers (hao3), or plain ASCII (hao). Meanings are in English.
hsk_frequency
Get the frequency ranking and usage statistics for a Chinese word. Returns the word's rank among HSK vocabulary (1 = most frequent), raw frequency score, rarity class, and HSK level.
hsk_convert_script
Convert a Chinese word to all 5 transcription systems: pinyin (tone marks), numeric (tone numbers), Wade-Giles, Bopomofo/Zhuyin, and Gwoyeu Romatzyh. Returns all systems for every pronunciation form.
hsk_classifier
Find the measure word (classifier / 量词) for a Chinese noun. Returns all classifiers associated with the word. Empty list if no classifiers exist in the dataset.
hsk_convert_characters
Convert a Chinese word between simplified and traditional characters. Accepts either script and returns both with pinyin and meanings. Covers 11,470 HSK words. Meanings are in English.
hsk_search_meaning
Search for HSK words by English meaning using full-text search. Each result includes simplified characters, pinyin, all transcription systems, meanings, classifiers, and HSK levels. Ordered by relevance. Paginated (20 per page).
hsk_words_by_radical
Find all HSK words sharing a given radical (部首). Each word includes simplified/traditional characters, pinyin, part of speech, meanings, radical, frequency rank, and HSK levels. Ordered by frequency. Paginated (20 per page).
hsk_polyphones
List Chinese characters with multiple pronunciations (多音字) in HSK vocabulary. Each result includes all pronunciation forms with pinyin, meanings, and part of speech. Ordered by frequency. Paginated (20 per page).
hsk_homophones
Find HSK words sharing the same pinyin pronunciation (homophones). Useful for drilling tone-pair distinctions. Each result includes simplified characters, pinyin, all transcription systems, meanings, and HSK levels. Paginated (20 per page).
hsk_build_study_set
Build a study set of HSK words for a given level, ordered by frequency (most common first). Each word includes simplified/traditional characters, pinyin, part of speech, meanings, radical, frequency rank, and HSK levels. Paginated (20 per page).
hsk_suggest_next
Suggest the next words to learn at a given HSK level, excluding words already known. Each word includes simplified/traditional characters, pinyin, part of speech, meanings, radical, frequency rank, and HSK levels. Ordered by frequency (most useful first). Paginated (20 per page).
hsk_compare
Compare 2-5 Chinese words side by side. Each word shows simplified/traditional characters, pinyin, part of speech, frequency rank, HSK levels, radical, all transcription systems, and meanings.
hsk_diff
Compare two HSK levels to see vocabulary overlap and differences. Shows words exclusive to each level and words shared by both. Useful for comparing old (HSK 2.0) vs new (HSK 3.0) standards.