dsh-masterduel

Master Duel panel for DeepSeek Harness: card lookup, "related cards", and deck check, backed by the master-duel-ai-advisor MCP server.

The panel has four tabs:

• 查卡: card name / passcode / effect search, filters (attribute, race, level, ATK/DEF, rarity, banlist), grid or list view, sort, search history, recent-card thumbnails, related cards (text mention / same archetype / alias) with one-click add to deck, and card images (YGOPRODeck, Master Duel Chinese, or Master Duel Meta alt art) with automatic source fallback and retry.
• 构建: three-column main/extra/side builder with deck stats, type dots, level badges, smart fill from real-deck inclusion rates, opening-hand testing through the EDOPro engine (先手实测, 5 cards, 3/5/10 hands or a specified hand, sorted by value, with auto tiers), exact 先手 5 / 后手 6 opening probabilities through hand_odds (先后手概率, with editable auto rules), AI review of those samples, manual saves (export / import / diff / two-save compare), undo, and YDK / YDKE export.
• 排行: deck-type rankings (power / tournament / ladder), series by release date, real-deck breakdown with main/extra filters, click-through to a deck.
• 卡组检查: YDK / YDKE / card-list checking with stat cards, a full card list, distributions with percentages, banlist dates, report export, and ?tab=deck&deck=… deep links.

This is the skeleton: a host plugin that serves a self-contained panel under /dsh-masterduel/panel and proxies the MCP tools. A native DSH client plugin (settings page / sidebar) can wrap the same routes later.

Layout

package.json          dsh.bundle.patch -> cordis.patch.yml
cordis.patch.yml      insert entry id=dsh-masterduel
lib/index.js          host: routes + MCP lifecycle
lib/mcp-client.js     stdio JSON-RPC client (initialize / tools/call)
lib/hand-odds.js      hand_odds rules + AI-generated starter rules
lib/panel.html        self-contained UI (no build step)
test/smoke.mjs        standalone check: lookup + related

Requirements

• DSH Desktop 0.2.x, Node 22.13+
• The MCP server unpacked at ~/.dsh/mcp/master-duel-ai-advisor (default), or set DSH_MASTERDUEL_MCP to another dist/mcp.mjs.
• Node: discovered from the DSH resources directory; override with DSH_MASTERDUEL_NODE when needed.
• Network on first run: the MCP downloads ~30 MB of card data; the route planner (not used by this panel yet) needs ~60 MB more.
• If the machine reaches the internet through a local proxy, the DSH host process needs NODE_USE_ENV_PROXY=1 and HTTPS_PROXY/HTTP_PROXY.
• The panel shows a red banner when the MCP script or Node cannot be found, with both paths and a copy button.

Offline install

If GitHub is unavailable, use the distributed dsh-masterduel-0.2.0.zip (SHA256 in SHA256.txt next to it) and follow INSTALL.md. It contains the same package.json, lib/, cordis.patch.yml, README, LICENSE and install notes.

Install (manual, no build)

1. Copy this directory to the desktop profile's node_modules:

   Copy-Item -Recurse .\dsh-masterduel "$env:USERPROFILE\.dsh\profiles\desktop\node_modules\dsh-masterduel"
   

2. Add the entry to the profile patch (~/.dsh/profiles/desktop/cordis.patch.yml):

   - insert:
       - id: dsh-masterduel
         name: 'dsh-masterduel'
   

   Keep a backup first; the desktop profile is managed by the Electron app.

3. Restart DSH completely, then either open 设置 → 游戏王 MD (the hand-written client bundle in lib/client.js embeds the panel), or open:

   http://127.0.0.1:<当前端口>/dsh-masterduel/panel

   The port is the GUI URL shown in the runtime context.

The client half is a plain side-effect script (window.__ModuleLoader__.load), so there is no build step; React comes from the host's shared module table.

Alternative (if the profile is not Electron-managed):

dsh plugin --profile desktop add <absolute path to this directory>

API

Method	Path	Body / query	Returns
GET	/dsh-masterduel/panel	—	HTML
GET	/dsh-masterduel/api/health	—	{ ok, script, error? }
GET	/dsh-masterduel/api/lookup	q	{ ok, text, cards[] }
GET	/dsh-masterduel/api/search	q / text / kind / attr / race / level / atk / def / archetype / rarity / limit (≤200)	{ ok, text, cards[], stats }; the panel shows 60 and offers 「显示更多」 to 200
GET	/dsh-masterduel/api/semantic	q (natural-language effect)	{ ok, cards[] }
POST	/dsh-masterduel/api/ai-search	{ q }	{ ok, cards[], plan } — two LLM calls (plan + rerank), uses tokens
GET	/dsh-masterduel/api/related	q, mode=mention|archetype|alias	related cards: text mention, same archetype (grouped by monster/spell/trap in the UI), or alias/treated-as
GET	/dsh-masterduel/img	src (remote image URL)	cached card image; downloads once into ~/.cache/dsh-masterduel/images
GET	/dsh-masterduel/api/image-stats	source?	local cache size + per-source cached/missing counts + full-download estimates
GET	/dsh-masterduel/api/image-fallbacks	—	cards whose image came from a fallback source, with original source and reason
POST	/dsh-masterduel/api/image-download	{ source: ygo|cn|md, limit? }	start background full download
GET	/dsh-masterduel/api/image-download-status	—	progress of the running download
GET	/dsh-masterduel/api/banlist	—	current Master Duel banlist entries
GET	/dsh-masterduel/api/deck-breakdown	id (deck-type id)	card inclusion rates from real decks
GET	/dsh-masterduel/api/series-ranking	order=new|old	archetype series ranked by mdRelease (local dump)
GET	/dsh-masterduel/api/ranking	mode=power|pop|master	top deck types, cached 10 min
POST	/dsh-masterduel/api/deck	{ deck }	{ ok, text }
POST	/dsh-masterduel/api/deck-resolve	{ deck }	parsed cards with section + image
POST	/dsh-masterduel/api/deck-graph	{ deck }	deck stats + distributions + card list (ids) + banlist issues
POST	/dsh-masterduel/api/smart-fill	{ cards: [{id,count,section}], target? }	suggested cards + counts from real-deck inclusion rates
POST	/dsh-masterduel/api/hand-odds	{ deck, rules? }	exact 先手 5 / 后手 6 opening odds via hand_odds; auto starters from main-deck text when rules is empty
POST	/dsh-masterduel/api/generate-hand-rules	{ deck }	model-generated 卡名：条件 → 能动 rules for hand_odds (uses tokens; validated against deck names)
POST	/dsh-masterduel/api/cards-by-ids	{ ids }	minimal card rows (type/level/ATK/DEF/images) for enriching old saved decks
POST	/dsh-masterduel/api/verify-combo	{ deck, hand, tiers? }	EDOPro engine route + end board for one opening hand
POST	/dsh-masterduel/api/analyze-sample	{ deck, samples, issues? }	AI review of sampled hands (needs an LLM; returns summary/issues/suggestions)
GET/POST	/dsh-masterduel/api/settings	— / { searchHistory, buildHistory }	persisted panel settings (≤10 entries each)

Language

UI defaults to Chinese, with no automatic language dialog. Use the header selector to switch to English (beta): navigation, main controls, filters and empty states are translated, while card names/card text and some long dynamic messages stay in the source language. The choice is stored in settings.json (lang) and survives DSH restarts.

Tests

node --test test/deck.test.mjs test/hand-odds.test.mjs
node scripts/verify-package.mjs   # package file list/version sanity
node --check lib/index.js         # and hand-odds / mcp-client / deck

Tests use a small test/fixtures/cards.json via DSH_MASTERDUEL_CARDS, so they run without the 16 MB downloaded card database. The GitHub Actions workflow (.github/workflows/ci.yml) runs tests, syntax checks, the package verifier, and npm pack --dry-run on Windows.

The panel also has a CDP smoke script for local regression (not shipped).

Security

• Every /api/* route requires a per-process random token in the X-MD-Token header. The panel HTML (served by us) embeds the token; the shell page itself is public but contains no data.
• Routes are local-only; CORS is not enabled, so other web pages cannot read the panel or its responses.
• The plugin spawns a child process and forwards data to the MCP server; it never touches the Master Duel client.
• The MCP server is AGPL-3.0; this plugin calls it as a separate process and does not bundle its code.

Legal

• This is an unofficial community tool. It is not affiliated with, endorsed by, or sponsored by Konami, Yu-Gi-Oh!, or Master Duel.
• Card images, card text, names, and related assets belong to their respective owners (Konami and the image/DB sites). This package does not bundle card images, card text, rankings, or deck data. The panel fetches them from third-party sources at the user's request and caches images locally on the user's own machine.
• Do not deploy the image proxy as a public service or redistribute cached images/data; respect the terms and robots policies of each source.
• The optional MCP server (master-duel-ai-advisor) is AGPL-3.0-or-later. It is a separate process and is not bundled with this plugin; install it separately and follow its license.
• AI features send deck/card text to the configured model provider only when the user explicitly triggers them.

Roadmap

• Native client plugin (settings section) wrapping the same routes.
• Related-card modes: same archetype, reverse mentions, fusion materials.
• Deck editor and route planner visualisation.
• Cache related-card lookups.