Common Web Visual Testing
HoangNguyen0403/agent-skills-standard
Standardizes visual audits, responsive design, and behavioral testing for web apps.
A skill your agent uses when modifying or visually debugging Nango frontend UI, including packages/webapp, packages/connect-ui, browser interactions, screenshots, and visual regressions.
Install UI Visual Debugging
$ npx skills add NangoHQ/nango --skill ui-visual-debugging -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install NangoHQ/nango ui-visual-debugging --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/NangoHQ/nango.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/ui-visual-debugging .claude/skills/ui-visual-debugging && 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-visual-debugging" agent skill from https://github.com/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debugging into .claude/skills/ui-visual-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-visual-debugging", 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/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debuggingType 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 NangoHQ/nango --skill ui-visual-debugging -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install NangoHQ/nango ui-visual-debugging --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NangoHQ/nango.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/ui-visual-debugging .agents/skills/ui-visual-debugging && 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-visual-debugging" agent skill from https://github.com/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debugging into .agents/skills/ui-visual-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-visual-debugging", 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 NangoHQ/nango --skill ui-visual-debugging -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install NangoHQ/nango ui-visual-debugging --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NangoHQ/nango.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/ui-visual-debugging .cursor/skills/ui-visual-debugging && 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-visual-debugging" agent skill from https://github.com/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debugging into .cursor/skills/ui-visual-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-visual-debugging", 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/NangoHQ/nango.git --path .agents/skills/ui-visual-debugging--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 NangoHQ/nango --skill ui-visual-debugging -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install NangoHQ/nango ui-visual-debugging --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NangoHQ/nango.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/ui-visual-debugging .gemini/skills/ui-visual-debugging && 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-visual-debugging" agent skill from https://github.com/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debugging into .gemini/skills/ui-visual-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-visual-debugging", 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 NangoHQ/nango ui-visual-debuggingInstalls 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 NangoHQ/nango --skill ui-visual-debugging -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/NangoHQ/nango.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/ui-visual-debugging .github/skills/ui-visual-debugging && 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-visual-debugging" agent skill from https://github.com/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debugging into .github/skills/ui-visual-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-visual-debugging", 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 NangoHQ/nango --skill ui-visual-debugging -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install NangoHQ/nango ui-visual-debugging --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NangoHQ/nango.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/ui-visual-debugging .opencode/skills/ui-visual-debugging && 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-visual-debugging" agent skill from https://github.com/NangoHQ/nango/tree/master/.agents/skills/ui-visual-debugging into .opencode/skills/ui-visual-debugging/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-visual-debugging", 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-visual-debugging- GitHub stars
- 13k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 465 words
- Files
- 1
- Skills in repo
- 9
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses when modifying or visually debugging Nango frontend UI, including packages/webapp, packages/connect-ui, browser interactions, screenshots, and visual regressions.
- Works in 5 steps: Start or reuse the relevant local… → Capture a desktop baseline with a… → Inspect screenshots with view_image,… → …
- Visually debugging Nango frontend UI
- SKILL.md covers Core Rules, Nango Targets, Standard Screenshot Workflow and Headless Interaction, plus 3 more sections
- Calls npm, npx and docker
What it does
UI Visual Debugging is an agent skill from NangoHQ/nango. Use when modifying or visually debugging Nango frontend UI, including packages/webapp, packages/connect-ui, browser interactions, screenshots, and visual regressions. Prefer browser-controlled or headless Playwright checks; use Peekaboo only for native macOS, visible-browser, or Accessibility tree inspection.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Debugging, Browser testing and Frontend development. It works with Playwright, macOS and npm. The repository describes itself as: Connect your agents & product to 1,000 APIs.
When your agent uses it
- Visually debugging Nango frontend UI
- Including packages/webapp
- Packages/connect-ui
- Browser interactions
Example prompts
- “/ui-visual-debugging”
Requirements
- Node.js
- Docker
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Start or reuse the relevant local services.
- Capture a desktop baseline with a browser-controlled tool. If a Playwright MCP/browser tool is available, use it. Otherwise use headless…
- Inspect screenshots with view_image, then edit the smallest relevant files.
- Verify after edits
- Capture fresh desktop screenshots and compare them before finishing.
What it can do on your machine
Read from SKILL.md and the folder at commit 1ed967d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npmnpxdocker
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, npx and docker, 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 no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
UI Visual Debugging loads about 1.3k tokens when it runs. Until then it costs about 83 tokens; SKILL.md has 465 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 passed
The automated check found no risky patterns in SKILL.md.
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 465 words (~1,282 tokens).
- name
- ui-visual-debugging
Files
Just SKILL.md in .agents/skills/ui-visual-debugging of NangoHQ/nango.
Open the folder on GitHubat commit 1ed967d
Compare with similar skills
UI Visual Debugging 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 Visual Debugging this skillNangoHQ/nango | 13k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Common Web Visual TestingHoangNguyen0403/agent-skills-standard | 570 | — | ~760 | Automated safety check: Pass | MIT | |
| Mirroir Onboardjfarcand/mirroir-mcp | 245 | — | ~4.4k | Automated safety check: Notes | Apache-2.0 | |
| Verify Debbie Codesdebs-obrien/debbie.codes | 142 | — | ~1.9k | Automated safety check: Pass | None | |
| Debuggingidavidov13/agentic-playwright | 223 | — | ~6.2k | Automated safety check: Notes | MIT | |
| Playwright Testingchongdashu/vibejam-starter-pack | 149 | — | ~2.2k | Automated safety check: Pass | None |
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Works with
Categories
Questions about UI Visual Debugging
What does UI Visual Debugging do?
A skill your agent uses when modifying or visually debugging Nango frontend UI, including packages/webapp, packages/connect-ui, browser interactions, screenshots, and visual regressions. UI Visual Debugging is an agent skill from NangoHQ/nango. Use when modifying or visually debugging Nango frontend UI, including packages/webapp, packages/connect-ui, browser interactions, screenshots, and visual regressions.
When should I use UI Visual Debugging?
UI Visual Debugging fits situations like: visually debugging Nango frontend UI; including packages/webapp; packages/connect-ui; browser interactions.
How do I install UI Visual Debugging in Claude Code?
Run `npx skills add NangoHQ/nango --skill ui-visual-debugging -a claude-code`. Or copy the skill folder (.agents/skills/ui-visual-debugging in NangoHQ/nango) into .claude/skills/ui-visual-debugging in your project. Claude Code loads it when a task matches its description.
How do I install UI Visual Debugging in Codex?
Run `npx skills add NangoHQ/nango --skill ui-visual-debugging -a codex`. Or copy the skill folder (.agents/skills/ui-visual-debugging in NangoHQ/nango) into .agents/skills/ui-visual-debugging in your project. Codex loads it when a task matches its description.
Can I use UI Visual Debugging 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 NangoHQ/nango --skill ui-visual-debugging -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-visual-debugging, .gemini/skills/ui-visual-debugging, .github/skills/ui-visual-debugging and .opencode/skills/ui-visual-debugging in your project.
What does UI Visual Debugging need to run?
Going by SKILL.md and its folder, UI Visual Debugging needs the command-line tools its instructions call (npm, npx and docker). Our summary lists: Node.js; Docker.
Does UI Visual Debugging access the network?
SKILL.md contains no URLs. Its commands use npm, npx and docker, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is UI Visual Debugging safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does UI Visual Debugging use?
UI Visual Debugging has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does UI Visual Debugging use?
About 1.3k tokens (SKILL.md is roughly 5.1k 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 Visual Debugging?
Skills that share tags, products or a category with UI Visual Debugging: Common Web Visual Testing (HoangNguyen0403/agent-skills-standard, 570 stars), Mirroir Onboard (jfarcand/mirroir-mcp, 245 stars), Verify Debbie Codes (debs-obrien/debbie.codes, 142 stars) and Debugging (idavidov13/agentic-playwright, 223 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains UI Visual Debugging?
NangoHQ (a GitHub organization) maintains it in NangoHQ/nango, which has 12,545 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 7, 2026.
Source: NangoHQ/nango on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.