Japan Ux
If you're localizing a site for Japan and need to get forms, typography, and politeness levels right, this server gives Claude ten tools and nine reference documents covering the conventions that trip up Western teams. It generates Japanese form markup with furigana fields and postal code autofill, audits existing forms against JP patterns, converts UI copy to the appropriate keigo level for your business context, and checks CSS for typography issues like missing font feature settings. The seasonal context tool tells you which 二十四節気 microseason you're in and when launch blackouts happen. Everything runs locally through stdio with no API keys. The bundled data includes 100 Japanese names, real postal codes, era calendar conversions, and trust signal checklists by site type.
- tools
- 11
- transport
- STDIO
- last updated
- Aug 16, 2026
Tools
11 toolsPublic tool metadata for what this MCP can expose to an agent.
review_jp_uiFlagship enforcer — scores CSS/markup against the Japanese UI standard (typography, colour, font payload) with JLReq/JIS citations and fixes.
Flagship enforcer — scores CSS/markup against the Japanese UI standard (typography, colour, font payload) with JLReq/JIS citations and fixes.
No parameter schema in public metadata yet.
generate_jp_formOutputs Japanese form markup: 姓/名 order, furigana, 〒 postal auto-fill, 3-field phone, 年月日 dates.
Outputs Japanese form markup: 姓/名 order, furigana, 〒 postal auto-fill, 3-field phone, 年月日 dates.
No parameter schema in public metadata yet.
validate_jp_formScores a form against JP conventions (0-100) with issues, severity, and code fixes.
Scores a form against JP conventions (0-100) with issues, severity, and code fixes.
No parameter schema in public metadata yet.
generate_jp_placeholderReturns test data: names in kanji/katakana/romaji, real postal codes, formatted phone numbers, era dates.
Returns test data: names in kanji/katakana/romaji, real postal codes, formatted phone numbers, era dates.
No parameter schema in public metadata yet.
suggest_keigo_levelConverts English UI text to Japanese at the appropriate politeness level for a given business context.
Converts English UI text to Japanese at the appropriate politeness level for a given business context.
No parameter schema in public metadata yet.
score_japan_readinessRates a page across five categories: forms, copy, trust signals, typography, cultural fit.
Rates a page across five categories: forms, copy, trust signals, typography, cultural fit.
No parameter schema in public metadata yet.
transform_for_japanRewrites Western markup into Japan-ready markup with a before/after score and per-change explanations.
Rewrites Western markup into Japan-ready markup with a before/after score and per-change explanations.
No parameter schema in public metadata yet.
check_jp_typographyAudits CSS for Japanese typography: font stacks, line-height, kinsoku shori, sizing, palt.
Audits CSS for Japanese typography: font stacks, line-height, kinsoku shori, sizing, palt.
No parameter schema in public metadata yet.
get_seasonal_contextReturns the current season, active events, 24 microseasons (二十四節気), and launch blackout windows.
Returns the current season, active events, 24 microseasons (二十四節気), and launch blackout windows.
No parameter schema in public metadata yet.
audit_japan_uxSeven-category audit (layout, typography, visual, navigation, trust, content, mobile) with a letter grade.
Seven-category audit (layout, typography, visual, navigation, trust, content, mobile) with a letter grade.
No parameter schema in public metadata yet.
design_direction_for_japanProduces a Japan-specific design brief from brand type, audience, and industry.
Produces a Japan-specific design brief from brand type, audience, and industry.
No parameter schema in public metadata yet.
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japan-ux-mcp
Japan Design — UI + UX correctness for AI coding agents. A front-end enforcer: point it at real CSS/markup and it scores your UI against the Japanese standard — typography (kinsoku, line-height, fonts), colour symbolism, font performance — with W3C JLReq / JIS X 4051 citations and fixes. Plus the full UX layer: forms (姓名/furigana), keigo, trust signals, legal, and seasonal design.
Lead tool: review_jp_ui — the front-end correctness enforcer (run it on any UI, including Western-built, before shipping to Japan).
Details
- Repository
- github.com/mrslbt/japan-ux-mcp
- Package
japan-ux-mcp- Transport
- STDIO
- Registry
- MCP registry, active