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/display-modesnpx skills add live-codes/livecodes --skill display-modesgit 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 | $0.00052 | $0.01655 |
| Opus 5 | $0.00026 | $0.00827 |
| Sonnet 5 | $0.00010 | $0.00331 |
| Haiku 4.5 | $0.00005 | $0.00166 |
Grade A, and why
livecodes/display-modes 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 — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.
This skill builds on configuration. Read it first for foundational concepts.
LiveCodes — Display Modes
Display modes control what UI elements are shown in the playground. Choose mode based on your embedding use case.
Setup
import { createPlayground } from 'livecodes';
// Via config object
createPlayground('#container', {
config: { mode: 'simple' },
});
// Via query params
createPlayground('#container', {
params: { mode: 'result' },
});
// Via URL
// https://livecodes.io/?mode=lite&template=react
Core Patterns
Full mode (default)
Complete playground with toolbars, all editors, result pane.
// Default mode - no need to specify
createPlayground('#container', {
template: 'react',
});
// Mode is 'full' by default
Simple mode (embeds)
One editor + result. Ideal for embedded playgrounds with limited space.
createPlayground('#container', {
config: {
mode: 'simple',
layout: 'vertical', // 'vertical' or 'horizontal'
activeEditor: 'script',
editor: 'monaco', // 'monaco' or 'codemirror' (default)
},
params: {
js: 'console.log("Hello")',
console: 'open',
},
});
// With style editor
createPlayground('#container', {
config: {
mode: 'simple',
layout: 'vertical',
activeEditor: 'script',
editor: 'monaco',
},
});
Lite mode
Lightweight editor for faster loading. Minimal features.
createPlayground('#container', {
config: { mode: 'lite' },
template: 'react',
});
// Via URL
// https://livecodes.io/?mode=lite&template=react
Lite mode features:
- Uses CodeJar editor (light-weight)
- No minimap, no advanced autocomplete
- Still supports all languages
- Faster initial load
Editor mode (code only)
No result pane. Shows only the editors.
createPlayground('#container', {
config: { mode: 'editor' },
template: 'react',
});
Use for:
- Code review interfaces
- Teaching code patterns
- Read-only snippet viewers
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 · 301 lines · 52 tokens per session scan A a2ad12bee99b
livecodes/display-modes is a skill published in the GitHub repository live-codes/livecodes (1,488 stars, last pushed 4d ago), licensed MIT. It adds 52 tokens to every session and 1,655 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 2026-08-30.
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