STRUCTURE API · v2026.08

Reliable structural decomposition of Chinese characters and words

Structured data on semantic/phonetic components and word formation for AI and education platforms.

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A structural data service built for AI and education platforms · Read the docs

Why HanziPeek

One thing, done precisely.

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Accurate decomposition

Character components and word formation with verifiable results

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Structured API

Confidence-scored JSON, ready for AI tool calling

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One-line embed

JS widget that shows structure cards on hover or click

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Built for platforms

Designed for education products and AI platforms

Live demo

DENSITY

Semantic components are vermilion, phonetic components indigo — never swapped.

Two ways to use

REST API

Send characters, get structured JSON back — built for backend services and AI tool calling.

curl

curl -X POST https://api.chinesekey.org/v1/decompose \
  -H "Authorization: Bearer pk_live_..." \
  -H "Content-Type: application/json" \
  -d '{"chars":"清","mode":"full","lang":"en"}'

View API docs

JS Widget

One script tag adds hover-to-reveal structure cards to any page.

html

<script src="https://cdn.chinesekey.org/peek.js"
        data-key="pk_live_..."
        data-density="minimal"></script>

View embed guide

Simple, transparent pricing

Free

For testing and evaluation

Daily free calls
Core API and widget

Pay as you go

$0.020/char

For education products and content platforms

Larger call volume
Priority support

See full pricing