OpenCidian: open Chinese ↔ Vietnamese dictionary (Hán Việt, pinyin, character breakdown)

io.github.OpenCidian/opencidianVersion 0.3.0

Open Chinese-Vietnamese dictionary by Perxel: Hán Việt, pinyin, meanings, characters. Cited.

Status

Responds233 msNov 14, 2026, 14:41 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:41 UTC
Latency: 233 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://opencidian-mcp.perxel.com/mcpResponds233 msNov 14, 2026, 14:41 UTC

No sign-in

Claude Code

claude mcp add --transport http opencidian https://opencidian-mcp.perxel.com/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: opencidian
Remote MCP server URL: https://opencidian-mcp.perxel.com/mcp

Cursor

{
  "mcpServers": {
    "opencidian": {
      "url": "https://opencidian-mcp.perxel.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"opencidian","type":"http","url":"https://opencidian-mcp.perxel.com/mcp"}'

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Tools

7 tools

Tools of OpenCidian: open Chinese ↔ Vietnamese dictionary (Hán Việt, pinyin, character breakdown)
	Description		Read-only	Idempotent	Open world
`about`The dataset's version and build date, its licence (CC BY-SA 4.0), the full attribution to quote when reusing it, and every source with its pinned version and licence (CC-CEDICT, CVDICT, Thiều Chửu, Unihan, Make Me a Hanzi, the HSK lists). Use it to say where an answer comes from or how to cite OpenCidian.	The dataset's version and build date, its licence (CC BY-SA 4.0), the full attribution to quote when reusing it, and every source with its pinned version and licence (CC-CEDICT, CVDICT, Thiều Chửu, Unihan, Make Me a Hanzi, the HSK lists). Use it to say where an answer comes from or how to cite OpenCidian.	Not declared	Yes	Not declared	Not declared
`annotate_text`Splits Chinese text into words (longest match against the dictionary) and gives each its pinyin, Hán Việt per character, Vietnamese and English senses and entry `id`. `kind` is word, unknown (Chinese not in the dictionary: say so) or other (punctuation, Latin, digits). `otherReadings` > 0 means the word has more readings than the one shown: look it up when the reading matters. The split is by dictionary match, not grammar, and can be wrong (哪国人 comes out 哪 + 国人): check a split that changes the meaning.	Splits Chinese text into words (longest match against the dictionary) and gives each its pinyin, Hán Việt per character, Vietnamese and English senses and entry `id`. `kind` is word, unknown (Chinese not in the dictionary: say so) or other (punctuation, Latin, digits). `otherReadings` > 0 means the word has more readings than the one shown: look it up when the reading matters. The split is by dictionary match, not grammar, and can be wrong (哪国人 comes out 哪 + 国人): check a split that changes the meaning.	Not declared	Yes	Not declared	Not declared
`get_character`Everything known about one character: Hán Việt readings (Thiều Chửu first, Unihan when Thiều Chửu has none), pinyin readings, a short English gloss, stroke count, radical, its parts (decomposition) and how it was formed (etymology: the meaning part and the sound part, each with its Hán Việt), and its traditional or simplified forms. Every field carries `src`. For the words a character is in, use words_with; for a character used as a word, lookup.	Everything known about one character: Hán Việt readings (Thiều Chửu first, Unihan when Thiều Chửu has none), pinyin readings, a short English gloss, stroke count, radical, its parts (decomposition) and how it was formed (etymology: the meaning part and the sound part, each with its Hán Việt), and its traditional or simplified forms. Every field carries `src`. For the words a character is in, use words_with; for a character used as a word, lookup.	Not declared	Yes	Not declared	Not declared
`lookup`Dictionary entries for a Chinese word, a pinyin syllable or a Vietnamese word: simplified and traditional forms, pinyin, Hán Việt per character (Thiều Chửu), Vietnamese senses (CVDICT), English senses (CC-CEDICT), HSK level. Every field carries `src`, the source it came from. `kinds` says how the query was read and each entry's `match` which reading found it. `vi: null` means CVDICT has no Vietnamese for that word: say so, don't translate the English as if it were the dictionary's. No entries means the word isn't in the dictionary: say so, don't guess.	Dictionary entries for a Chinese word, a pinyin syllable or a Vietnamese word: simplified and traditional forms, pinyin, Hán Việt per character (Thiều Chửu), Vietnamese senses (CVDICT), English senses (CC-CEDICT), HSK level. Every field carries `src`, the source it came from. `kinds` says how the query was read and each entry's `match` which reading found it. `vi: null` means CVDICT has no Vietnamese for that word: say so, don't translate the English as if it were the dictionary's. No entries means the word isn't in the dictionary: say so, don't guess.	Not declared	Yes	Not declared	Not declared
`search_meaning`Vietnamese or English → Chinese: entries whose Vietnamese (CVDICT) or English (CC-CEDICT) senses match the meaning, HSK words first. These are candidates, not one translation: compare their senses and HSK levels before picking one, and say when several fit.	Vietnamese or English → Chinese: entries whose Vietnamese (CVDICT) or English (CC-CEDICT) senses match the meaning, HSK words first. These are candidates, not one translation: compare their senses and HSK levels before picking one, and say when several fit.	Not declared	Yes	Not declared	Not declared
`suggest_correction`Sends a correction for a wrong or missing value (Hán Việt, Vietnamese meaning, English, pinyin, a missing word) as a public GitHub issue in OpenCidian/opencidian-data; a maintainer reviews it, nothing changes in the data until then. Returns the issue number and link. Only use it when the user asks to report a mistake or agrees to, with evidence from a dictionary or textbook, never for a guess. The issue is public: put no personal details in it. A few per minute for all callers together.	Sends a correction for a wrong or missing value (Hán Việt, Vietnamese meaning, English, pinyin, a missing word) as a public GitHub issue in OpenCidian/opencidian-data; a maintainer reviews it, nothing changes in the data until then. Returns the issue number and link. Only use it when the user asks to report a mistake or agrees to, with evidence from a dictionary or textbook, never for a guess. The issue is public: put no personal details in it. A few per minute for all callers together.	Not declared	No	Not declared	Yes
`words_with`Words of two characters or more that contain a character (simplified or traditional), HSK words first, then shorter words. Each comes as a full entry: pinyin, Hán Việt, Vietnamese and English senses, HSK level, `src` per field.	Words of two characters or more that contain a character (simplified or traditional), HSK words first, then shorter words. Each comes as a full entry: pinyin, Hán Việt, Vietnamese and English senses, HSK level, `src` per field.	Not declared	Yes	Not declared	Not declared

Details

Registry status: Active
Published: Nov 10, 2026
Updated: Nov 10, 2026
Website: https://opencidian-mcp.perxel.com/llms.txt⁠ (opens in a new tab)
Repository: https://github.com/OpenCidian/opencidian-mcp⁠ (opens in a new tab)
Categories (suggested): Search and webSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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