Canvas
openclaw/openclaw
Present hosted widget documents on a connected macOS panel and control panel visibility or navigation.
Outpaint a selected Codex-Canvas image beyond its current frame and collect the expanded image back onto the canvas.
MITAuto-check passed
Install Canvas Expand
$ npx skills add Xiangyu-CAS/codex-canvas --skill canvas-expand -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Xiangyu-CAS/codex-canvas canvas-expand --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/Xiangyu-CAS/codex-canvas.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/canvas-expand .claude/skills/canvas-expand && 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 "canvas-expand" agent skill from https://github.com/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expand into .claude/skills/canvas-expand/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canvas-expand", 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/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expandType 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 Xiangyu-CAS/codex-canvas --skill canvas-expand -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Xiangyu-CAS/codex-canvas canvas-expand --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Xiangyu-CAS/codex-canvas.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/canvas-expand .agents/skills/canvas-expand && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "canvas-expand" agent skill from https://github.com/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expand into .agents/skills/canvas-expand/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canvas-expand", 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 Xiangyu-CAS/codex-canvas --skill canvas-expand -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Xiangyu-CAS/codex-canvas canvas-expand --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Xiangyu-CAS/codex-canvas.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/canvas-expand .cursor/skills/canvas-expand && 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 "canvas-expand" agent skill from https://github.com/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expand into .cursor/skills/canvas-expand/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canvas-expand", 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/Xiangyu-CAS/codex-canvas.git --path skills/canvas-expand--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 Xiangyu-CAS/codex-canvas --skill canvas-expand -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Xiangyu-CAS/codex-canvas canvas-expand --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Xiangyu-CAS/codex-canvas.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/canvas-expand .gemini/skills/canvas-expand && 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 "canvas-expand" agent skill from https://github.com/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expand into .gemini/skills/canvas-expand/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canvas-expand", 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 Xiangyu-CAS/codex-canvas canvas-expandInstalls 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 Xiangyu-CAS/codex-canvas --skill canvas-expand -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Xiangyu-CAS/codex-canvas.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/canvas-expand .github/skills/canvas-expand && 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 "canvas-expand" agent skill from https://github.com/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expand into .github/skills/canvas-expand/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canvas-expand", 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 Xiangyu-CAS/codex-canvas --skill canvas-expand -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Xiangyu-CAS/codex-canvas canvas-expand --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Xiangyu-CAS/codex-canvas.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/canvas-expand .opencode/skills/canvas-expand && 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 "canvas-expand" agent skill from https://github.com/Xiangyu-CAS/codex-canvas/tree/main/skills/canvas-expand into .opencode/skills/canvas-expand/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "canvas-expand", 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
canvas-expand- GitHub stars
- 137
- Token cost
- ~390 tokens
- SKILL.md length
- 215 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- MIT
At a glance
Outpaint a selected Codex-Canvas image beyond its current frame and collect the expanded image back onto the canvas.
- Works in 8 steps: Codex-Canvas first creates a padded PNG… → Use the user's Expand preset, scale,… → Preserve the source subject identity,… → …
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Canvas Expand is an agent skill from Xiangyu-CAS/codex-canvas. Outpaint a selected Codex-Canvas image beyond its current frame and collect the expanded image back onto the canvas.
Its SKILL.md is about 390 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Infinite canvas plugin for codex; Codex无限画布插件，图层分离，涂抹修改. The licence is MIT.
Example prompts
- “/canvas-expand”
Workflow steps
8 steps, taken from the first numbered list in SKILL.md.
- Codex-Canvas first creates a padded PNG input using the selected scale, target ratio, and the user's final source-image position inside…
- Use the user's Expand preset, scale, ratio, and optional text as the primary expansion instruction.
- Preserve the source subject identity, visible text, composition anchor, perspective, lighting, colors, and design intent.
- Fill the padded surrounding area with coherent generated content. Do not leave blurred padding, blank margins, checkerboards, seams, or…
- Extend the scene or design outside the current frame. Do not crop, zoom in, replace the main subject, or redesign unrelated content.
- Keep the original image content visually coherent with the newly generated surrounding area.
- Save the final expanded image as a PNG under the Codex-Canvas job output directory.
- Codex-Canvas will collect the output and place it in a row to the right of the source image.
What it can do on your machine
Read from SKILL.md and the folder at commit b801839. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Canvas Expand loads about 390 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 215 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 Xiangyu-CAS/codex-canvas at commit b801839, republished under its MIT licence (© Xiangyu-CAS). 215 words, ~390 tokens.
Download SKILL.mdSave it as
.claude/skills/canvas-expand/SKILL.md (or your agent's skills folder).- name
- canvas-expand
- description
- Outpaint a selected Codex-Canvas image beyond its current frame and collect the expanded image back onto the canvas.
Codex-Canvas Expand
Use this skill when the user invokes Expand from Codex-Canvas or asks to extend a selected canvas image beyond its current edges.
Behavior
- Codex-Canvas first creates a padded PNG input using the selected scale, target ratio, and the user's final source-image position inside the preview frame. Treat the pasted original content as locked source content and the padded surroundings as the outpaint region.
- Use the user's Expand preset, scale, ratio, and optional text as the primary expansion instruction.
- Preserve the source subject identity, visible text, composition anchor, perspective, lighting, colors, and design intent.
- Fill the padded surrounding area with coherent generated content. Do not leave blurred padding, blank margins, checkerboards, seams, or artificial borders in the final image.
- Extend the scene or design outside the current frame. Do not crop, zoom in, replace the main subject, or redesign unrelated content.
- Keep the original image content visually coherent with the newly generated surrounding area.
- Save the final expanded image as a PNG under the Codex-Canvas job output directory.
- Codex-Canvas will collect the output and place it in a row to the right of the source image.
Do not ask follow-up questions from a background Expand job. Make the most reasonable outpainted expansion from the provided instruction.
© Xiangyu-CAS, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/canvas-expand of Xiangyu-CAS/codex-canvas.
Open the folder on GitHubat commit b801839
Compare with similar skills
Canvas Expand 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 |
|---|---|---|---|---|---|---|
| Canvas Expand this skillXiangyu-CAS/codex-canvas | 137 | — | ~390 | 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 | |
| Plan Canvasaffaan-m/ECC | 277k | 1 repos | ~2.2k | Automated safety check: Pass | MIT | |
| Engine Selectionsickn33/agentic-awesome-skills | 47k | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Canvas Designanthropics/skills | 180k | 52 repos | ~3k | Automated safety check: Pass | Apache-2.0 |
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Open and use Codex-Canvas, a project-local infinite canvas for Codex image generation.
Canvas Edit Elements
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Generate an instance segmentation map for a selected Codex-Canvas image, split the source into transparent element layers, and collect the layers back onto the canvas.
Canvas Quick Edit
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Run a user-described Quick Edit on a selected Codex-Canvas image and collect the result back onto the canvas.
Canvas Edit Text
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Recognize visible text in a selected Codex-Canvas image, apply a user-described text edit with imagegen, and collect the result back onto the canvas.
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Remove the background from a selected Codex-Canvas image and collect a transparent PNG result back onto the canvas.
Questions about Canvas Expand
What does Canvas Expand do?
Outpaint a selected Codex-Canvas image beyond its current frame and collect the expanded image back onto the canvas. Canvas Expand is an agent skill from Xiangyu-CAS/codex-canvas. Outpaint a selected Codex-Canvas image beyond its current frame and collect the expanded image back onto the canvas.
How do I install Canvas Expand in Claude Code?
Run `npx skills add Xiangyu-CAS/codex-canvas --skill canvas-expand -a claude-code`. Or copy the skill folder (skills/canvas-expand in Xiangyu-CAS/codex-canvas) into .claude/skills/canvas-expand in your project. Claude Code loads it when a task matches its description.
How do I install Canvas Expand in Codex?
Run `npx skills add Xiangyu-CAS/codex-canvas --skill canvas-expand -a codex`. Or copy the skill folder (skills/canvas-expand in Xiangyu-CAS/codex-canvas) into .agents/skills/canvas-expand in your project. Codex loads it when a task matches its description.
Can I use Canvas Expand 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 Xiangyu-CAS/codex-canvas --skill canvas-expand -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/canvas-expand, .gemini/skills/canvas-expand, .github/skills/canvas-expand and .opencode/skills/canvas-expand in your project.
What does Canvas Expand need to run?
SKILL.md names no scripts, command-line tools or credentials: Canvas Expand is instructions for the agent only.
Does Canvas Expand 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 Canvas Expand 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 Canvas Expand use?
Canvas Expand 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 Canvas Expand use?
About 390 tokens (SKILL.md is roughly 1.6k 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 Canvas Expand?
Skills that share tags, products or a category with Canvas Expand: Canvas (openclaw/openclaw, 392k stars), Canva Designer (asgeirtj/system_prompts_leaks, 69k stars), Plan Canvas (affaan-m/ECC, 277k stars) and Engine Selection (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Canvas Expand?
Xiangyu-CAS (a GitHub user) maintains it in Xiangyu-CAS/codex-canvas, which has 137 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 1, 2026.
Source: Xiangyu-CAS/codex-canvas on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.