UI UX Audit
chmonitor/chmonitor
Automated UI/UX + accessibility audit for the ClickHouse Monitor dashboard (apps/dashboard-tsr).
A skill your agent uses when a product journey, production component path, UI/UX operation sequence, visual regression, or alignment review must be represented or audited in /ui-canvas with…
Install UI Canvas
$ npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Prismer-AI/PrismerCloud ui-canvas --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Prismer-AI/PrismerCloud.git skills-src && mkdir -p .claude/skills && cp -r skills-src/sdk/apc/skills/ui-canvas .claude/skills/ui-canvas && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "ui-canvas" agent skill from https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvas into .claude/skills/ui-canvas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-canvas", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvasType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Prismer-AI/PrismerCloud ui-canvas --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Prismer-AI/PrismerCloud.git skills-src && mkdir -p .agents/skills && cp -r skills-src/sdk/apc/skills/ui-canvas .agents/skills/ui-canvas && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ui-canvas" agent skill from https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvas into .agents/skills/ui-canvas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-canvas", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Prismer-AI/PrismerCloud ui-canvas --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Prismer-AI/PrismerCloud.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/sdk/apc/skills/ui-canvas .cursor/skills/ui-canvas && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ui-canvas" agent skill from https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvas into .cursor/skills/ui-canvas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-canvas", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Prismer-AI/PrismerCloud.git --path sdk/apc/skills/ui-canvas--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Prismer-AI/PrismerCloud ui-canvas --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Prismer-AI/PrismerCloud.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/sdk/apc/skills/ui-canvas .gemini/skills/ui-canvas && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ui-canvas" agent skill from https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvas into .gemini/skills/ui-canvas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-canvas", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Prismer-AI/PrismerCloud ui-canvasInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Prismer-AI/PrismerCloud.git skills-src && mkdir -p .github/skills && cp -r skills-src/sdk/apc/skills/ui-canvas .github/skills/ui-canvas && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ui-canvas" agent skill from https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvas into .github/skills/ui-canvas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-canvas", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Prismer-AI/PrismerCloud ui-canvas --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Prismer-AI/PrismerCloud.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/sdk/apc/skills/ui-canvas .opencode/skills/ui-canvas && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ui-canvas" agent skill from https://github.com/Prismer-AI/PrismerCloud/tree/main/sdk/apc/skills/ui-canvas into .opencode/skills/ui-canvas/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-canvas", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ui-canvas- GitHub stars
- 1.6k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 358 words
- Files
- 2
- Skills in repo
- 88
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when a product journey, production component path, UI/UX operation sequence, visual regression, or alignment review must be represented or audited in /ui-canvas with…
- Works in 6 steps: 建立双向索引 → 盘生产 source → 写不可变版本 → …
- A product journey
- SKILL.md covers 承重规则, Workflow, 输出契约 and Red flags, plus 1 more section
- Calls npx and rg; needs APC_API_KEY and PRISMER_API_KEY
What it does
UI Canvas is an agent skill from Prismer-AI/PrismerCloud. Use when a product journey, production component path, UI/UX operation sequence, visual regression, or alignment review must be represented or audited in /ui-canvas with implementation-spec references, immutable versions, task-bound screenshots, and a persisted ReportCard.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill.json`).
It sits in Testing & QA, covering UI design and Visual regression testing. The licence is MIT.
When your agent uses it
- A product journey
- Production component path
- UI/UX operation sequence
- Visual regression
Example prompts
- “/ui-canvas”
Requirements
- Node.js
- A credential in APC_API_KEY
- A credential in PRISMER_API_KEY
- Pre-approved tools (allowed-tools): Bash
Workflow steps
6 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit e5d9444. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Bash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npxrg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
APC_API_KEYPRISMER_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
UI Canvas loads about 1.2k tokens when it runs. Until then it costs about 71 tokens; SKILL.md has 358 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Prismer-AI/PrismerCloud at commit e5d9444, republished under its MIT licence (© Prismer-AI). 358 words, ~1,230 tokens.
Download SKILL.mdSave it as
.claude/skills/ui-canvas/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- ui-canvas
- description
- Use when a product journey, production component path, UI/UX operation sequence, visual regression, or alignment review must be represented or audited in /ui-canvas with implementation-spec references, immutable versions, task-bound screenshots, and a persisted ReportCard.
- allowed-tools
- Bash
- license
- MIT
- metadata.category
- design
UI Canvas
用一个代码定义的展开画布完成 spec ↔ 真实生产组件 ↔ 用户操作 ↔ 可寻址视觉证据 对齐。Production checkpoint 必须在 Frame 内直接渲染真实 UI；不能安全渲染就保留同尺寸 gap contract。最终证据来自真实 /ui-canvas deep link，不来自 /ui-kit 仿制稿。
承重规则
- 先读 implementation spec 的
UI Canvas index和 Canvas registry，建立双向索引。 - 禁止从
src/app/ui-kit/sections/**取节点实现；/ui-kit仅是历史参考。 - Canvas callback 只能改变本地 fixture、选中节点和 edge 高亮，不得发业务请求。
aligned版本不可原地修改；需求变化时新增版本并用previousVersion回指。- Production Frame 直接 import 生产组件；不能复用就写
gap，不复制 JSX 冒充闭合。 - 测试和截图只证明 Canvas route/registry/render；不能证明 service、DB、daemon 或业务副作用。
- 截图 asset 与 ReportCard 证明“证据已产出”，不能自动判定“视觉正确”。
Workflow
1. 建立双向索引
从 spec 找出 set、journey、checkpoint 与 user/system oracle。每个 CanvasSet、version、journey、node 都持有真实 SpecRef；spec 反向列出 Overview、journey deep link 与 registry source。
2. 盘生产 source
rg -n "export (function|const|class)" src/app src/components
rg -n "ui-kit/sections|fetch\\(|imFetch\\(|/api/" src/app/ui-canvas| 判定 | 条件 | 动作 |
|---|---|---|
production | props 可确定性渲染，callback 可留在本地 | 在 component-registry.tsx 直接 import |
gap | 没有生产组件，或 wrapper 挂载即请求/轮询 | 写清 reason、driftRef、双 oracle |
生产 wrapper 只因数据编排不能复用时，可抽纯 *View 让生产 wrapper 与 Canvas 共用；不得借机修改 endpoint、model、daemon 或 SDK。
3. 写不可变版本
- draft 可编辑；
aligned后冻结。 - 需求变化新增版本文件，不覆盖历史文件。
- checkpoint 总数、唯一性、edge 完整性和 production source 由 registry test 锁定。
- Overview 从 journey registry 派生，不复制 checkpoint。
4. 展开 Frame 与操作边
- Production checkpoint 使用约
960×680的 Frame，body 直接挂 renderer。 - Gap 使用同尺寸 contract，显示 reason、driftRef、双 oracle 和 SpecRef。
- 默认相机聚焦 deep-link Frame；整条路径缩略图只能通过显式
Fit journey。 - Inspector 使用浮层，不永久挤压真实组件。
- Edge label 写用户动作或条件；用
action / condition / error / recovery / handoff区分语义。 - 生产 callback 选择对应 outgoing edge；没有真实 target 时只记录 local action。
5. 验证结构与真实渲染
npx vitest run src/app/ui-canvas/__tests__
npx tsc --noEmit
PRISMER_BASE_URL=http://127.0.0.1:3000 \
npx playwright test e2e-playwright/specs/ui-canvas.spec.ts --project=chromium
rg -n "ui-kit/sections|fetch\\(|imFetch\\(|/api/" src/app/ui-canvasPlaywright 只能打本地 127.0.0.1:3000。截图前先断言目标可见，不得用 .first() 掩盖稳定态重复节点。
Show full SKILL.md (165 more words)Show less
6. 发布 task-bound 视觉证据
先从代码 registry 读取合法 set/version/journey：
npx tsx scripts/ui-canvas-evidence.ts --list再对需要验收的真实 Frame deep link 产 light/dark 截图、task asset 和一张 ReportCard：
npx tsx scripts/ui-canvas-evidence.ts \
--set <set> --version <version> --journey <journey> --node <node> \
--themes light,dark \
--workspace "$APC_WORKSPACE_ID" --task "$PRISMER_TASK_ID"Runner 的顺序是：registry target 校验 → 可选 baseline asset 回读 → Playwright 打真实 /ui-canvas deep link → PNG 像素闸 → 上传 task-bound assets → 写 visibility=task:<id> 的 ReportCard。非法 set/version/journey/node 在任何副作用前失败。默认 ReportCard path 同时包含 task 与本次 evidence id，因此同一节点重复运行不会撞已有 page；显式 --path 时调用方必须提供未占用路径。
需要旧图/新图并排时只传一个 --baseline-light 或 --baseline-dark；一张 ReportCard 只承载所选 theme 的一组 old/new。它只是 reference，不是 diff；结构化输出的 comparison 恒为 "none"。禁止编造偏差百分比、changed pixels 或视觉 PASS。
凭据只从已设置的 APC_API_KEY / PRISMER_API_KEY 环境读取，禁止把 token 放进命令参数或报告。
没有 task/workspace/live local cloud 时可以完成代码审计，但证据步骤必须写 not-run + 原因，不能声称已产 asset 或 ReportCard。
输出契约
CANVAS: <set>@<version> | route: </ui-canvas?...>
PRODUCTION: <count> | source: <repo-relative-path:line>
GAPS: <count> | refs: <drift refs>
REGISTRY-TEST: <command> | exit: <code>
PLAYWRIGHT: <local command> | exit: <code> | passed: <count>
EVIDENCE: route=<exact deep link> | themes=light,dark | comparison=none
ASSETS: light=<assetId>(bytes=<n>) | dark=<assetId>(bytes=<n>)
REPORTCARD: pageId=<id> | uri=<prismer uri> | visibility=task:<taskId>
HARNESS: <command> | exit: <code>
BOUNDARY: canvas interaction and evidence are not service verification只汇报真跑结果。任何 not-run 都必须带原因；没有 pageId 就没有持久化 ReportCard。
Red flags
- 在
/ui-kit画一个相似稿再当 production - 用摘要卡代表真实 UI，或把真实组件藏进 detached Focus
- 默认 Fit 整条路径，导致 Frame 变成不可读缩略图
- 复制生产 JSX 到 Canvas
- 用 mock 隐藏缺失 checkpoint
- 为截图在 Canvas 调业务 API
- 原地修改
aligned版本 - 用 asset/ReportCard 的存在声称视觉已经通过
- 把 Canvas local callback 说成系统副作用已验证
出现任一项就停止，把节点改回 gap、建立共享生产 *View，或如实降低证据结论。
<!-- APC-ACK:v1 -->调用回执
执行本 Skill 的第一步：
cloud skill ack ui-canvas --task "$PRISMER_TASK_ID"| exit | 含义 | 动作 |
|---|---|---|
0 | 回执已落库 | 继续 |
3 | 无 task 上下文 | 继续，但不得声称已 ack 或已发布 task evidence |
4 | 不是 task assignee | 停止并上报 |
1 | 网络或服务端失败 | 重试一次，仍失败则标注回执缺失 |
回执只证明 Skill 被调度，不证明执行正确。
<!-- /APC-ACK:v1 -->© Prismer-AI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in sdk/apc/skills/ui-canvas of Prismer-AI/PrismerCloud.
- SKILL.md
- skill.json
Open the folder on GitHubat commit e5d9444
Compare with similar skills
UI Canvas next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| UI Canvas this skillPrismer-AI/PrismerCloud | 1.6k | — | ~1.2k | Automated safety check: Notes | MIT | |
| UI UX Auditchmonitor/chmonitor | 300 | — | ~2k | Automated safety check: Notes | GPL-3.0 | |
| Before and After Screenshotsmichaelshimeles/skills | 1.3k | 1 repos | ~1k | Automated safety check: Pass | MIT | |
| Handsontable Visual Test Demoshandsontable/handsontable | 22k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Kc Screenshotimran31415/kube-coder | 388 | — | ~870 | Automated safety check: Notes | MIT | |
| Visual QA For Web And Terminal UIscode-yeongyu/oh-my-openagent | 70k | — | ~9.5k | Automated safety check: Pass | Custom licence |
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handsontable/handsontable
Explains how to add or change the demo pages that Handsontable's visual regression suite photographs, including per-feature routes in the js demo and the shared grid.
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Capture desktop + mobile, dark + light screenshots of the kube-coder dashboard SPA for visual QA of a UI change.
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Checks a built UI against a human-interface checklist and any reference image, pairing day and night screenshots at two screen widths.
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Related
Categories
Questions about UI Canvas
What does UI Canvas do?
A skill your agent uses when a product journey, production component path, UI/UX operation sequence, visual regression, or alignment review must be represented or audited in /ui-canvas with…. UI Canvas is an agent skill from Prismer-AI/PrismerCloud. Use when a product journey, production component path, UI/UX operation sequence, visual regression, or alignment review must be represented or audited in /ui-canvas with implementation-spec references, immutable versions, task-bound screenshots, and a persisted ReportCard.
When should I use UI Canvas?
UI Canvas fits situations like: A product journey; production component path; UI/UX operation sequence; visual regression.
How do I install UI Canvas in Claude Code?
Run `npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a claude-code`. Or copy the skill folder (sdk/apc/skills/ui-canvas in Prismer-AI/PrismerCloud) into .claude/skills/ui-canvas in your project. Claude Code loads it when a task matches its description.
How do I install UI Canvas in Codex?
Run `npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a codex`. Or copy the skill folder (sdk/apc/skills/ui-canvas in Prismer-AI/PrismerCloud) into .agents/skills/ui-canvas in your project. Codex loads it when a task matches its description.
Can I use UI Canvas in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Prismer-AI/PrismerCloud --skill ui-canvas -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ui-canvas, .gemini/skills/ui-canvas, .github/skills/ui-canvas and .opencode/skills/ui-canvas in your project.
What does UI Canvas need to run?
Going by SKILL.md and its folder, UI Canvas needs the command-line tools its instructions call (npx and rg) and credentials named APC_API_KEY and PRISMER_API_KEY. Our summary lists: Node.js; A credential in APC_API_KEY; A credential in PRISMER_API_KEY. Its frontmatter pre-approves these tools: Bash.
Does UI Canvas access the network?
SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is UI Canvas safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does UI Canvas use?
UI Canvas is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does UI Canvas use?
About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to UI Canvas?
Skills that share tags, products or a category with UI Canvas: UI UX Audit (chmonitor/chmonitor, 300 stars), Before and After Screenshots (michaelshimeles/skills, 1.3k stars), Handsontable Visual Test Demos (handsontable/handsontable, 22k stars) and Kc Screenshot (imran31415/kube-coder, 388 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains UI Canvas?
Prismer-AI (a GitHub organization) maintains it in Prismer-AI/PrismerCloud, which has 1,555 GitHub stars. The repository holds 88 skills in this directory. The repository was last updated on September 30, 2026.
Source: Prismer-AI/PrismerCloud on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.