Canvas
openclaw/openclaw
Present hosted widget documents on a connected macOS panel and control panel visibility or navigation.
Visual HTML canvas sandbox for agent-driven UI and live previews
MITAuto-check passed
Install Sandbox
$ npx skills add alsk1992/CloddsBot --skill sandbox -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alsk1992/CloddsBot sandbox --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/alsk1992/CloddsBot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/src/skills/bundled/sandbox .claude/skills/sandbox && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "sandbox" agent skill from https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandbox into .claude/skills/sandbox/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandboxType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add alsk1992/CloddsBot --skill sandbox -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alsk1992/CloddsBot sandbox --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alsk1992/CloddsBot.git skills-src && mkdir -p .agents/skills && cp -r skills-src/src/skills/bundled/sandbox .agents/skills/sandbox && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sandbox" agent skill from https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandbox into .agents/skills/sandbox/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alsk1992/CloddsBot --skill sandbox -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alsk1992/CloddsBot sandbox --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alsk1992/CloddsBot.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/src/skills/bundled/sandbox .cursor/skills/sandbox && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "sandbox" agent skill from https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandbox into .cursor/skills/sandbox/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/alsk1992/CloddsBot.git --path src/skills/bundled/sandbox--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add alsk1992/CloddsBot --skill sandbox -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alsk1992/CloddsBot sandbox --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alsk1992/CloddsBot.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/src/skills/bundled/sandbox .gemini/skills/sandbox && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "sandbox" agent skill from https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandbox into .gemini/skills/sandbox/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install alsk1992/CloddsBot sandboxInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add alsk1992/CloddsBot --skill sandbox -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/alsk1992/CloddsBot.git skills-src && mkdir -p .github/skills && cp -r skills-src/src/skills/bundled/sandbox .github/skills/sandbox && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "sandbox" agent skill from https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandbox into .github/skills/sandbox/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alsk1992/CloddsBot --skill sandbox -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install alsk1992/CloddsBot sandbox --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alsk1992/CloddsBot.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/src/skills/bundled/sandbox .opencode/skills/sandbox && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "sandbox" agent skill from https://github.com/alsk1992/CloddsBot/tree/main/src/skills/bundled/sandbox into .opencode/skills/sandbox/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
sandbox- GitHub stars
- 2.9k
- Token cost
- ~341 tokens
- SKILL.md length
- 105 words
- Files
- 2
- Skills in repo
- 116
- Repo updated
- First seen
- Licence
- MIT
At a glance
Visual HTML canvas sandbox for agent-driven UI and live previews
- Works in 5 steps: /sandbox start launches a local HTTP… → /sandbox push sends HTML to the canvas,… → /sandbox screenshot captures the current… → …
- SKILL.md covers Commands, Environment Variables, Examples and How It Works
- Runs TypeScript scripts from its folder
What it does
Sandbox is an agent skill from alsk1992/CloddsBot. Visual HTML canvas sandbox for agent-driven UI and live previews
Its SKILL.md is about 340 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `index.ts`).
The repository describes itself as: Open Source AI trading agent that operates autonomously across 1000+ markets - Polymarket, Kalshi, Binance, Hyperliquid, Solana DEXs, 5 EVM chains. Scans for edge, executes… The licence is MIT.
Example prompts
- “/sandbox”
Requirements
- Node.js
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- /sandbox start launches a local HTTP server that serves the canvas page
- /sandbox push sends HTML to the canvas, rendered in real time
- /sandbox screenshot captures the current canvas state as an image
- /sandbox reset clears all HTML, CSS, and JS from the canvas
- /sandbox status shows whether the server is running, the URL, and content sizes
What it can do on your machine
Read from SKILL.md and the folder at commit c930628. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships script files (TypeScript), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Sandbox loads about 341 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 105 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from alsk1992/CloddsBot at commit c930628, republished under its MIT licence (© alsk1992). 105 words, ~341 tokens.
Download SKILL.mdSave it as
.claude/skills/sandbox/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- sandbox
- description
- Visual HTML canvas sandbox for agent-driven UI and live previews
- commands
- /sandbox, /canvas
Sandbox - Visual Canvas
Push HTML content to a live-updating canvas server for visual previews, dashboards, and agent-driven UI.
Commands
/sandbox start - Start the canvas server (returns URL)
/sandbox push <html> - Push HTML content to the canvas
/sandbox reset - Reset canvas to blank state
/sandbox screenshot - Take a screenshot of the current canvas
/sandbox status - Show canvas server status and settingsEnvironment Variables
| Variable | Description |
|---|---|
CANVAS_ALLOW_JS_EVAL | Enable JavaScript evaluation in canvas (default: false) |
ALLOW_UNSAFE_SANDBOX | Enable unsafe sandbox mode (default: false) |
Examples
/sandbox start
/sandbox push <h1>Hello World</h1><p>Live preview</p>
/sandbox screenshot
/sandbox status
/sandbox resetHow It Works
/sandbox startlaunches a local HTTP server that serves the canvas page/sandbox push <html>sends HTML to the canvas, rendered in real time/sandbox screenshotcaptures the current canvas state as an image/sandbox resetclears all HTML, CSS, and JS from the canvas/sandbox statusshows whether the server is running, the URL, and content sizes
© alsk1992, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in src/skills/bundled/sandbox of alsk1992/CloddsBot.
- SKILL.md
- index.ts
Open the folder on GitHubat commit c930628
Compare with similar skills
Sandbox next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Sandbox this skillalsk1992/CloddsBot | 2.9k | — | ~341 | Automated safety check: Pass | MIT | |
| Canvasopenclaw/openclaw | 392k | — | ~263 | Automated safety check: Pass | MIT | |
| Canva Designerasgeirtj/system_prompts_leaks | 69k | — | ~2.1k | Automated safety check: Pass | CC0-1.0 | |
| Agent Sandboxruvnet/ruflo | 74k | 3 repos | ~777 | Automated safety check: Pass | MIT | |
| Canvas Designanthropics/skills | 180k | 52 repos | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Sandbox Benchvercel/next.js | 143k | — | ~4.1k | Automated safety check: Pass | MIT |
Similar skills
Canva Designer
asgeirtj/system_prompts_leaks
Creates and edits Canva designs, generates images and works with brand kits through the canva CLI and Canva's official MCP server, from decks to social posts.
Agent Sandbox
ruvnet/ruflo
Agent skill for sandbox - invoke with $agent-sandbox. An agent skill from ruvnet/ruflo.
- Official
Canvas Design
anthropics/skills
Creates original posters and static art as PNG or PDF by first writing a short design philosophy, then expressing it visually on a canvas.
- Official
Sandbox Bench
vercel/next.js
Benchmark React or Next.js changes on Vercel Sandbox VMs with paired A/B statistics: react PR/commit vs base, or Next.js PR/commit vs base, measured end-to-end through the bench/render-pipeline app…
Langfuse Previews
langfuse/langfuse
Use Langfuse's disposable per-PR previews at pr-N.preview.langfuse.com (synthetic data only).
More from alsk1992/CloddsBot
All 116 skills in this repoQmd
alsk1992/CloddsBot
Local hybrid search for markdown notes and docs. An agent skill from alsk1992/CloddsBot.
Drift SDK
alsk1992/CloddsBot
Drift Protocol perpetual futures trading on Solana (direct SDK)
Edge
alsk1992/CloddsBot
Find mispriced markets by comparing to external models and data sources
Embeddings
alsk1992/CloddsBot
Vector embeddings configuration and semantic search. An agent skill from alsk1992/CloddsBot.
News
alsk1992/CloddsBot
Monitor news and correlate with prediction market movements. An agent skill from alsk1992/CloddsBot.
Opportunity
alsk1992/CloddsBot
Find and execute cross-platform arbitrage opportunities across prediction markets
Questions about Sandbox
What does Sandbox do?
Visual HTML canvas sandbox for agent-driven UI and live previews. Sandbox is an agent skill from alsk1992/CloddsBot.
How do I install Sandbox in Claude Code?
Run `npx skills add alsk1992/CloddsBot --skill sandbox -a claude-code`. Or copy the skill folder (src/skills/bundled/sandbox in alsk1992/CloddsBot) into .claude/skills/sandbox in your project. Claude Code loads it when a task matches its description.
How do I install Sandbox in Codex?
Run `npx skills add alsk1992/CloddsBot --skill sandbox -a codex`. Or copy the skill folder (src/skills/bundled/sandbox in alsk1992/CloddsBot) into .agents/skills/sandbox in your project. Codex loads it when a task matches its description.
Can I use Sandbox in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add alsk1992/CloddsBot --skill sandbox -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sandbox, .gemini/skills/sandbox, .github/skills/sandbox and .opencode/skills/sandbox in your project.
What does Sandbox need to run?
Going by SKILL.md and its folder, Sandbox needs TypeScript for the scripts in its folder. Our summary lists: Node.js.
Does Sandbox access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Sandbox safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Sandbox use?
Sandbox is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Sandbox use?
About 341 tokens (SKILL.md is roughly 1.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Sandbox?
Skills that share tags, products or a category with Sandbox: Canvas (openclaw/openclaw, 392k stars), Canva Designer (asgeirtj/system_prompts_leaks, 69k stars), Agent Sandbox (ruvnet/ruflo, 74k stars) and Canvas Design (anthropics/skills, 180k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Sandbox?
alsk1992 (a GitHub user) maintains it in alsk1992/CloddsBot, which has 2,903 GitHub stars. The repository holds 116 skills in this directory. The repository was last updated on October 2, 2026.
Source: alsk1992/CloddsBot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.