Context Mode Output Sandbox
mksglu/context-mode
Routes large command, file, API and browser output through context-mode tools so only the needed result enters the agent's context, instead of dumping it via Bash.
Designing around token limits, memory, and conversation persistence.
Install Context Window Design
$ npx skills add Owl-Listener/ai-design-skills --skill context-window-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Owl-Listener/ai-design-skills context-window-design --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/Owl-Listener/ai-design-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/model-interaction-design/context-window-design .claude/skills/context-window-design && 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 "context-window-design" agent skill from https://github.com/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-design into .claude/skills/context-window-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "context-window-design", 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/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-designType 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 Owl-Listener/ai-design-skills --skill context-window-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Owl-Listener/ai-design-skills context-window-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/ai-design-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/model-interaction-design/context-window-design .agents/skills/context-window-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "context-window-design" agent skill from https://github.com/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-design into .agents/skills/context-window-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "context-window-design", 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 Owl-Listener/ai-design-skills --skill context-window-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Owl-Listener/ai-design-skills context-window-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/ai-design-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/model-interaction-design/context-window-design .cursor/skills/context-window-design && 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 "context-window-design" agent skill from https://github.com/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-design into .cursor/skills/context-window-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "context-window-design", 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/Owl-Listener/ai-design-skills.git --path skills/model-interaction-design/context-window-design--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 Owl-Listener/ai-design-skills --skill context-window-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Owl-Listener/ai-design-skills context-window-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/ai-design-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/model-interaction-design/context-window-design .gemini/skills/context-window-design && 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 "context-window-design" agent skill from https://github.com/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-design into .gemini/skills/context-window-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "context-window-design", 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 Owl-Listener/ai-design-skills context-window-designInstalls 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 Owl-Listener/ai-design-skills --skill context-window-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Owl-Listener/ai-design-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/model-interaction-design/context-window-design .github/skills/context-window-design && 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 "context-window-design" agent skill from https://github.com/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-design into .github/skills/context-window-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "context-window-design", 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 Owl-Listener/ai-design-skills --skill context-window-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Owl-Listener/ai-design-skills context-window-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Owl-Listener/ai-design-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/model-interaction-design/context-window-design .opencode/skills/context-window-design && 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 "context-window-design" agent skill from https://github.com/Owl-Listener/ai-design-skills/tree/main/skills/model-interaction-design/context-window-design into .opencode/skills/context-window-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "context-window-design", 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
context-window-design- GitHub stars
- 181
- Token cost
- ~516 tokens
- SKILL.md length
- 256 words
- Files
- 1
- Skills in repo
- 11
- Repo updated
- First seen
- Licence
- MIT
At a glance
Designing around token limits, memory, and conversation persistence.
- Tasks that involve Context engineering
- SKILL.md covers The Context Window as a Design…, Memory and Persistence, Strategies for Limited Context and Design Artefacts
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Context Window Design is an agent skill from Owl-Listener/ai-design-skills. Designing around token limits, memory, and conversation persistence.
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering Context engineering. The repository describes itself as: AI Design Skills Collection: agentic skills, commands, and plugins for designing AI products — from interaction patterns to alignment, evaluation, agent orchestration, and prompt… The licence is MIT.
When your agent uses it
- Tasks that involve Context engineering
Example prompts
- “/context-window-design”
What it can do on your machine
Read from SKILL.md and the folder at commit f41b650. 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
Context Window Design loads about 516 tokens when it runs. Until then it costs about 23 tokens; SKILL.md has 256 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 Owl-Listener/ai-design-skills at commit f41b650, republished under its MIT licence (© Owl-Listener). 256 words, ~516 tokens.
Download SKILL.mdSave it as
.claude/skills/context-window-design/SKILL.md (or your agent's skills folder).- name
- context-window-design
- description
- Designing around token limits, memory, and conversation persistence.
Context Window Design
Every AI model has a finite context window. Designing within this constraint — and designing the user experience around it — is a core skill for AI product design.
The Context Window as a Design Material
The context window is not just a technical limitation. It's a design material:
- What goes in: System prompts, conversation history, retrieved documents, tool results, user preferences
- What gets dropped: Older messages, less relevant context, verbose instructions
- What the user sees: The conversation as presented may differ from what the model actually processes Designers must understand context window allocation to design reliable experiences.
Memory and Persistence
Users expect AI to remember. Design for different memory horizons:
- Within-conversation memory: What was said earlier in this chat. Usually handled by the context window itself.
- Cross-conversation memory: Preferences, past decisions, ongoing projects. Requires explicit memory systems.
- Shared memory: Context shared across multiple users or agents. Requires careful privacy design.
Strategies for Limited Context
- Summarisation: Compress earlier conversation into summaries to free up tokens
- Retrieval-augmented generation: Pull in relevant context on demand rather than keeping everything loaded
- Priority ordering: Put the most important context closest to the prompt (recency bias in attention)
- User-controlled context: Let users pin, remove, or prioritise what the AI remembers
- Graceful degradation: When context is lost, acknowledge it rather than hallucinating continuity
Design Artefacts
- Context budget allocations (how many tokens for system prompt, history, retrieval, etc.)
- Memory architecture diagrams showing what persists and what's ephemeral
- Context overflow UX flows (what happens when the window fills up)
- User-facing memory controls specification
© Owl-Listener, 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/model-interaction-design/context-window-design of Owl-Listener/ai-design-skills.
Open the folder on GitHubat commit f41b650
Compare with similar skills
Context Window Design 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 |
|---|---|---|---|---|---|---|
| Context Window Design this skillOwl-Listener/ai-design-skills | 181 | — | ~516 | Automated safety check: Pass | MIT | |
| Context Mode Output Sandboxmksglu/context-mode | 26k | — | ~4.1k | Automated safety check: Pass | Custom licence | |
| Memori Long-Term MemoryMemoriLabs/Memori | 17k | — | ~2k | Automated safety check: Notes | Custom licence | |
| Picoclaw Skill Creatorsipeed/picoclaw | 30k | — | ~4.4k | Automated safety check: Pass | MIT | |
| ccc Semantic Code Searchcocoindex-io/cocoindex-code | 2.7k | — | ~938 | Automated safety check: Pass | Apache-2.0 | |
| Context Mode for Antigravity CLImksglu/context-mode | 26k | — | ~850 | Automated safety check: Pass | Custom licence |
Similar skills
Memori Long-Term Memory
MemoriLabs/Memori
Connects Claude Code to Memori Cloud for long-term memory, recalling stored context before substantive replies and saving new context afterward.
Picoclaw Skill Creator
sipeed/picoclaw
Guidance for creating, updating and reviewing Picoclaw skills, from the SKILL.md structure to organizing bundled scripts, references and assets.
ccc Semantic Code Search
cocoindex-io/cocoindex-code
Semantic code search and index management with the ccc CLI: the agent initializes, indexes and queries the project by concept, filtering by language or path.
Context Mode for Antigravity CLI
mksglu/context-mode
Routing rules for using context-mode MCP tools in Antigravity CLI: sandboxed code runs, file analysis, indexed search and web fetches that keep large output out of the conversation.
Token Optimizer
alexgreensh/token-optimizer
Audit a Claude Code or Codex setup for context-window waste, then fix it and measure the savings.
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Related
Categories
Questions about Context Window Design
What does Context Window Design do?
Designing around token limits, memory, and conversation persistence. Context Window Design is an agent skill from Owl-Listener/ai-design-skills. Designing around token limits, memory, and conversation persistence.
When should I use Context Window Design?
Context Window Design fits situations like: tasks that involve Context engineering.
How do I install Context Window Design in Claude Code?
Run `npx skills add Owl-Listener/ai-design-skills --skill context-window-design -a claude-code`. Or copy the skill folder (skills/model-interaction-design/context-window-design in Owl-Listener/ai-design-skills) into .claude/skills/context-window-design in your project. Claude Code loads it when a task matches its description.
How do I install Context Window Design in Codex?
Run `npx skills add Owl-Listener/ai-design-skills --skill context-window-design -a codex`. Or copy the skill folder (skills/model-interaction-design/context-window-design in Owl-Listener/ai-design-skills) into .agents/skills/context-window-design in your project. Codex loads it when a task matches its description.
Can I use Context Window Design 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 Owl-Listener/ai-design-skills --skill context-window-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/context-window-design, .gemini/skills/context-window-design, .github/skills/context-window-design and .opencode/skills/context-window-design in your project.
What does Context Window Design need to run?
SKILL.md names no scripts, command-line tools or credentials: Context Window Design is instructions for the agent only.
Does Context Window Design 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 Context Window Design 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 Context Window Design use?
Context Window Design 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 Context Window Design use?
About 516 tokens (SKILL.md is roughly 2.1k 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 Context Window Design?
Skills that share tags, products or a category with Context Window Design: Context Mode Output Sandbox (mksglu/context-mode, 26k stars), Memori Long-Term Memory (MemoriLabs/Memori, 17k stars), Picoclaw Skill Creator (sipeed/picoclaw, 30k stars) and ccc Semantic Code Search (cocoindex-io/cocoindex-code, 2.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Context Window Design?
Owl-Listener (a GitHub user) maintains it in Owl-Listener/ai-design-skills, which has 181 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on June 9, 2026.
Source: Owl-Listener/ai-design-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.