sidecar: Skill for Claude Code

.claude/skills/refresh-brand-assets/SKILL.md

refresh-brand-assets is a skill for Claude Code from anteprojector/sidecar. It costs 65 tokens per session (953 once invoked), scanned A, original, MIT.

A guide for regenerating generated brand images after changing user-facing text, package names, colors, logos, or site details. These images include social preview cards, favicons, and README artwork.

In plain words
What is it for?
Use it to identify which generated assets need rebuilding and run the project commands that recreate preview cards, favicons, README artwork, and compiled output.
Why use it?
It prevents published images from continuing to show outdated text or branding after the source files have been edited.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is anteprojector/sidecar's own configuration. It tells Claude Code how to work on sidecar 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 sidecar configures →

Reuse

Borrowing it

Nothing to install: this file belongs to anteprojector/sidecar. 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/anteprojector/sidecar/main/.claude/skills/refresh-brand-assets/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/anteprojector/sidecar

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 refresh-brand-assets

README.md
[![agentmods](https://agentmods.dev/badge/skills/anteprojector/sidecar/refresh-brand-assets/github.svg)](https://agentmods.dev/skills/anteprojector/sidecar/refresh-brand-assets)
Your own site
<a href="https://agentmods.dev/skills/anteprojector/sidecar/refresh-brand-assets"><img src="https://agentmods.dev/badge/skills/anteprojector/sidecar/refresh-brand-assets/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 refresh-brand-assets

Your own site · 80×15
<a href="https://agentmods.dev/skills/anteprojector/sidecar/refresh-brand-assets"><img src="https://agentmods.dev/badge/skills/anteprojector/sidecar/refresh-brand-assets.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 953 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00065 $0.00953
Opus 5 $0.00032 $0.00477
Sonnet 5 $0.00013 $0.00191
Haiku 4.5 $0.00006 $0.00095

Measured 8d ago against content hash cd6852a594dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

refresh-brand-assets scanned grade A with 0 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 8d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/refresh-brand-assets/SKILL.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Refreshing generated brand assets

Some of this repo's user-facing text is baked into images. Editing the source copy is only half the change; the rendered asset keeps showing the old wording until it is re-rendered. grep cannot catch this, because by then the words are pixels.

This bit once: the v0.9.0 rename to sidecarsync updated every markdown and HTML file, and og.png still told every Slack and Twitter unfurl to npm i -g @projectors/sidecar. Unfurl caches hold that for weeks.

What is generated, and from what

Asset Source Regenerate with
packages/marketing/site/assets/og.png packages/marketing/scripts/og-card.html bun run --cwd packages/marketing og:render
packages/marketing/site/assets/favicon.{png,svg} scripts/make-favicon.py bun run --cwd packages/marketing favicon
packages/marketing/branding/readme-hero.svg scripts/make-readme-hero-*.{py,mjs} bun run --cwd packages/marketing readme-hero
packages/sidecar/dist/cli.js packages/sidecar/src/** bun run build (CI diffs this)

Only og.png carries text today. The logo, hero, and favicon are pure vector art with no text elements, so copy changes never affect them — but a palette or logo change does.

When to re-render og.png

Any change to the install command (including a package rename), the tagline, the site URL, the wordmark, or the yellow colorway. The card draws its own copy from og-card.html, so if you edited that file, re-render.

How

bun run --cwd packages/marketing og:render

That is scripts/make-og.mjs. It boots the repo's own static server, drives an installed Chrome headlessly over the DevTools protocol, and writes the PNG. Zero dependencies — no Playwright, no Puppeteer, no rasterizer in the tree.

Then confirm the result by looking at it (read the PNG as an image), not by trusting the exit code. Check the install command, wordmark, and URL.

If Chrome is somewhere unusual: CHROME=/path/to/chrome bun run --cwd packages/marketing og:render.

Read the full file on GitHub · 84 lines

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. 8d ago First seen · 84 lines · 65 tokens per session scan A cd6852a594dc

Subscribe to this mod's changes

refresh-brand-assets is a skill published in the GitHub repository anteprojector/sidecar (5 stars, last pushed 3d ago), licensed MIT. It adds 65 tokens to every session and 953 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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