kolibri: Skill for Claude Code

.claude/skills/zero-visual-delta-handoff/SKILL.md

zero-visual-delta-handoff is a skill for Claude Code from public-ui/kolibri. It costs 348 tokens per session (36,185 once invoked), scanned C, original, EUPL-1.2.

A workflow for moving or refactoring interface components while requiring the rendered result to remain visually unchanged.

In plain words
What is it for?
Use it for visual regression checks, snapshot comparisons, and handoff notes across development sessions.
Why use it?
It helps catch accidental visual changes during code cleanup or component migration by comparing the result with the base version.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is public-ui/kolibri's own configuration. It tells Claude Code how to work on kolibri itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything kolibri configures →

Reuse

Borrowing it

Nothing to install: this file belongs to public-ui/kolibri. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/public-ui/kolibri/develop/.claude/skills/zero-visual-delta-handoff/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/public-ui/kolibri

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for zero-visual-delta-handoff

README.md
[![agentmods](https://agentmods.dev/badge/skills/public-ui/kolibri/zero-visual-delta-handoff/github.svg)](https://agentmods.dev/skills/public-ui/kolibri/zero-visual-delta-handoff)
Your own site
<a href="https://agentmods.dev/skills/public-ui/kolibri/zero-visual-delta-handoff"><img src="https://agentmods.dev/badge/skills/public-ui/kolibri/zero-visual-delta-handoff/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for zero-visual-delta-handoff

Your own site · 80×15
<a href="https://agentmods.dev/skills/public-ui/kolibri/zero-visual-delta-handoff"><img src="https://agentmods.dev/badge/skills/public-ui/kolibri/zero-visual-delta-handoff.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 348 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 36,185 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00348 $0.36185
Opus 5.5 $0.00139 $0.14474
Sonnet 5.5 $0.00070 $0.07237
Haiku 4.5 $0.00035 $0.03619

Measured 2d ago against content hash ba70b04c6e0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

zero-visual-delta-handoff scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

bash -c 'rm -rf /work/repo/packages/themes/<theme>/test-results /work/repo/packages/themes/<theme>/playwright-report'

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| 32 | Die Liste der geaenderten Bilder eines PRs gibt es ohne `gh` und ohne lokalen Lauf: `curl https://public-ui.github.io/kolibri/visual/pr-<n>/report.json` — je Paket jedes Snapshot mit `status`, `diffPixels` und URL
.claude/skills/zero-visual-delta-handoff/SKILL.md · 1,018 lines

The source is not reproduced here

Licensed EUPL-1.2

The repository is licensed EUPL-1.2, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago Changed · +348 tokens per session ba70b04c6e0c
  2. 9d ago Changed 310a4408f1d9
  3. 27d ago Changed · +18 lines a9ff1390e14f
  4. 1mo ago Changed · +22 lines 992a851191b1
  5. 1mo ago Changed · +117 lines 9559057e4d6f
  6. 1mo ago Changed · +170 lines a4a6fe6f3e5a
  7. 1mo ago Changed · +123 lines cb4da8303f0b
  8. 1mo ago Changed · +97 lines 4deb087143d2
  9. 1mo ago Changed · +12 lines 9a77a0ed0186
  10. 1mo ago First seen · 459 lines · 0 tokens per session scan C 0d2f090a8341

Subscribe to this mod's changes

zero-visual-delta-handoff is a skill published in the GitHub repository public-ui/kolibri (288 stars, last pushed today), licensed EUPL-1.2. It adds 348 tokens to every session and 36,185 once invoked, about $0.0014 per session on Opus 5.5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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