vigiles: Skill for Claude Code

.claude/skills/generate-logo/SKILL.md

generate-logo is a skill for Claude Code from zernie/vigiles. It costs 15 tokens per session (772 once invoked), scanned A, original, MIT.

Instructions for generating and iterating the vigiles logo through the ImageRouter image-generation service.

In plain words
What is it for?
Use them to create logo variations, choose an image model, send generation requests, and save the returned PNG image.
Why use it?
They record the required API setup, request format, available models, and current logo details so logo work follows the project’s established process.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: positional $N argument.

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

Part of the vigiles plugin — 26 skills, 4 hooks, 2 plugins shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to zernie/vigiles. 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/zernie/vigiles/main/.claude/skills/generate-logo/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/zernie/vigiles

Made for: Claude Code.

Or install vigiles, the plugin that ships this one along with the rest of its 26 skills, 4 hooks, 2 plugins.

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 generate-logo

README.md
[![agentmods](https://agentmods.dev/badge/skills/zernie/vigiles/generate-logo/github.svg)](https://agentmods.dev/skills/zernie/vigiles/generate-logo)
Your own site
<a href="https://agentmods.dev/skills/zernie/vigiles/generate-logo"><img src="https://agentmods.dev/badge/skills/zernie/vigiles/generate-logo/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 generate-logo

Your own site · 80×15
<a href="https://agentmods.dev/skills/zernie/vigiles/generate-logo"><img src="https://agentmods.dev/badge/skills/zernie/vigiles/generate-logo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 772 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 17
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 37
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 85
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 82
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
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 $0.00015 $0.00772
Opus 5 $0.00008 $0.00386
Sonnet 5 $0.00003 $0.00154
Haiku 4.5 $0.00002 $0.00077

Measured 9d ago against content hash 2c2c8a74f9b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

generate-logo scanned grade A with 1 finding 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 9d 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.

Makes network callslowCapability

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

## Example curl
.claude/skills/generate-logo/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Generate logo variations for vigiles using the ImageRouter API (imagerouter.io).

Setup

Get an API key from https://imagerouter.io/api-keys. Pass it as an argument or set IMAGEROUTER_API_KEY env var. Do NOT commit the key.

API

Endpoint: https://api.imagerouter.io/v1/openai/images/generations
Auth: Bearer token in Authorization header
Method: POST, Content-Type: application/json

Request body

{
  "prompt": "...",
  "model": "google/nano-banana-2",
  "quality": "high",
  "size": "1024x1024",
  "response_format": "url",
  "output_format": "png"
}

Available models (image generation)

List models: GET https://api.imagerouter.io/v1/models

Known good models:

  • google/nano-banana-2 — best quality, $0.07/image
  • google/nano-banana-2:free — free tier
  • openai/gpt-image-1 — OpenAI's image model
  • black-forest-labs/FLUX-1.1-pro — FLUX pro

Response

{
  "created": 1775430873,
  "data": [{ "url": "https://storage.imagerouter.io/..." }],
  "cost": 0.069,
  "latency": 27627
}

Download the image from the URL in data[0].url.

The current logo (logo.png) is v6: overlapping translucent flame petals on dark background, amber-orange palette. Generated with google/nano-banana-2.

Prompt that produced it

A premium, refined logo icon for a developer tool called vigiles that compiles
typed TypeScript specs to AI instruction files. Inspired by OpenAI geometric aesthetic and Apple
minimalism. A single abstract geometric shape: an upward-pointing flame composed
of 3 overlapping translucent rounded shapes, creating depth through overlap —
similar to how the OpenAI logo uses overlapping curves. Warm amber to deep orange
color palette. Black background. No text. No letters. Pure abstract mark. Clean
enough to be an app icon. Luxurious, premium, modern tech company feel.

Design principles

  • Flame/torch motif — vigiles were Rome's night watchmen who carried torches
  • Amber/orange palette — matches GitHub Action branding color
  • No text in the icon — must work at 16px favicon size
  • Dark background variant for README, light/transparent variant for npm

Read the full file on GitHub · 104 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. 9d ago First seen · 104 lines · 15 tokens per session scan A 2c2c8a74f9b4

Subscribe to this mod's changes

generate-logo is a skill published in the GitHub repository zernie/vigiles (15 stars, last pushed yesterday), licensed MIT. It adds 15 tokens to every session and 772 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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