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Web Interface Guidelines · nexu-io | DecimalAI

code reviewby nexu-io

Web Interface Guidelines

nexu-io/web-design-guidelines

Source nexu-io/open-design ↗License Apache-2.0

Review UI code for Web Interface Guidelines compliance by the Vercel engineering team. Covers layout, typography, color, motion, and accessibility for product UI.

NewMaintained

Automatic

Design & UX Review pack

Last verified 8/28/2026

What it changes

Passed 3 of 13 test cases with the skill, and 3 of 13 without it.

Without skill22%

With skill22%

Checks it passed that the model alone missed

Uses 'file:line' syntax for reporting violations.
Attempts to read 'src/forms/ContactForm.jsx' directly.
Defaults to using 'references/guidelines.md' without asking the user to provide rules.

and 1 more in the full report

2 fixed3 passed either way16 still failing2 broke

Pass-rate lift: 0 pp
Tokens: -23%
Agent turns: 0%
Response time: -38%

Model gemini-3.6-flashMeasured 8/28/2026v15 of 23 cases passed with skill · 13 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/nexu-io-web-design-guidelines/SKILL.md https://app.decimal.ai/s/nexu-io-web-design-guidelines/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add nexu-io-web-design-guidelines, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/nexu-io-web-design-guidelines/ and pins it in .decimal/skills.lock

decimalai skills add nexu-io-web-design-guidelines

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/nexu-io-web-design-guidelines/SKILL.md https://app.decimal.ai/s/nexu-io-web-design-guidelines/SKILL.md

Raw file: /s/nexu-io-web-design-guidelines/SKILL.md ↗ · machine-readable summary at /s/nexu-io-web-design-guidelines.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

Can you review 'src/forms/ContactForm.jsx' against interface rules? I don't have a guidelines file handy in my current prompt — do you ask me to type out the rules for you?

What was checked, without and with the skill
Checked	Without skill	With skill
Defaults to using 'references/guidelines.md' without asking the user to provide rules.	Missed	Passed
Attempts to read 'src/forms/ContactForm.jsx' directly.	Missed	Passed

case-13 · gemini-3.6-flash · 8/28/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md34 lines2 files

Web Interface Guidelines

Review files for compliance with Web Interface Guidelines.

How It Works

Load the pinned guidelines from references/guidelines.md — this is the default, reproducible execution path
Optionally, fetch the latest guidelines from the upstream URL below and diff against the pinned snapshot to see if anything has changed
Read the specified files (or prompt user for files/pattern)
Check against all rules in the guidelines
Output findings in the terse file:line format

Guidelines Source

Default (pinned): The vendored copy at references/guidelines.md is the default execution path. It is a pinned snapshot of the upstream guidelines and guarantees the skill produces reproducible results in any runtime environment.

Upstream (live): For users who want the very latest rules, the live source is available at:

https://raw.githubusercontent.com/vercel-labs/web-interface-guidelines/main/command.md

Fetching the live version is optional — the pinned snapshot is always the baseline.

Usage

When a user provides a file or pattern argument:

Load references/guidelines.md as the default source
Optionally fetch the upstream URL to check for updates
Read the specified files
Apply all rules from the guidelines
Output findings using the format specified in the guidelines

If no files specified, ask the user which files to review.

Track record

Benchmark

3 / 13

test cases passed, vs 3 / 13 without

Adoption

Users: 1
Times used: 12

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/8/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

nexu-io / open-design

skills/web-design-guidelines/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 8/8/2026Version v1Bundled 1 file

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See it in action

What's inside

Web Interface Guidelines

How It Works

Guidelines Source

Usage

Track record

Benchmark

Adoption

SkillSafety

Source

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