Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/live-codes/livecodes/configurationnpx skills add live-codes/livecodes --skill configurationgit clone --depth 1 https://github.com/live-codes/livecodesWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00047 | $0.03828 |
| Opus 5 | $0.00023 | $0.01914 |
| Sonnet 5 | $0.00009 | $0.00766 |
| Haiku 4.5 | $0.00005 | $0.00383 |
Grade A, and why
livecodes/configuration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 412 lines — stays where its author put it; the contents beside it link to each section on GitHub.
LiveCodes — Configure Playground
LiveCodes uses configuration objects to define project content and behavior. Config can be passed to createPlayground or set via URL parameters.
Setup
import { createPlayground } from 'livecodes';
// Full config object
createPlayground('#container', {
config: {
title: 'My Project',
markup: { language: 'html', content: '<h1>Hello</h1>' },
style: { language: 'css', content: 'h1 { color: blue; }' },
script: { language: 'javascript', content: 'console.log("hi")' },
activeEditor: 'script',
},
});
// Query params (simpler syntax)
createPlayground('#container', {
params: {
html: '<h1>Hello</h1>',
css: 'h1 { color: blue; }',
js: 'console.log("hi")',
console: 'open',
},
});
Core Patterns
Configure each editor
const config = {
markup: {
language: 'markdown',
content: '# Title\n\nParagraph',
contentUrl: 'https://example.com/content.md', // Alternative to content
},
style: {
language: 'scss',
content: '$color: blue; h1 { color: $color; }',
},
script: {
language: 'typescript',
content: 'const x: number = 1;',
hiddenContent: 'export function helper() {}', // Hidden but evaluated
},
};
Enable CSS processors
const config = {
style: { language: 'css', content: '...' },
processors: ['tailwindcss', 'autoprefixer'], // Processors run in order
};
Add external resources
const config = {
stylesheets: ['https://cdn.jsdelivr.net/npm/tailwindcss@3/dist/tailwind.min.css'],
scripts: ['https://cdn.jsdelivr.net/npm/lodash@4/lodash.min.js'],
};
Configure tests
const config = {
tests: {
language: 'typescript',
content: `
import { sum } from './script';
test('sums numbers', () => {
expect(sum(1, 2)).toBe(3);
});
`,
},
};
Set display mode
const config = {
mode: 'simple', // 'full' | 'focus' | 'simple' | 'lite' | 'editor' | 'codeblock' | 'result'
view: 'result', // 'split' | 'editor' | 'result'
readonly: true, // Read-only mode
};
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.
- yesterday First seen · 412 lines · 47 tokens per session scan A 8df2145b5ab6
livecodes/configuration is a skill published in the GitHub repository live-codes/livecodes (1,488 stars, last pushed 4d ago), licensed MIT. It adds 47 tokens to every session and 3,828 once invoked, about $0.0002 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 2026-08-30.
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