O2 Review Loop
openobserve/openobserve
Splits a change into planner, coder and independent reviewer roles: you confirm a spec, a subagent implements it, and a separate reviewer checks each round's local WIP commit.
Run a design arena: a coordinator fans out N subagents (default 7) that each prototype one UI section through a different lens, switchable in-app via a temporary prototype selector, refined in rounds.
Install Design Arena
$ npx skills add archestra-ai/archestra --skill design-arena -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install archestra-ai/archestra design-arena --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/archestra-ai/archestra.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/design-arena .claude/skills/design-arena && 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 "design-arena" agent skill from https://github.com/archestra-ai/archestra/tree/main/.agents/skills/design-arena into .claude/skills/design-arena/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-arena", 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/archestra-ai/archestra/tree/main/.agents/skills/design-arenaType 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 archestra-ai/archestra --skill design-arena -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install archestra-ai/archestra design-arena --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archestra-ai/archestra.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/design-arena .agents/skills/design-arena && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "design-arena" agent skill from https://github.com/archestra-ai/archestra/tree/main/.agents/skills/design-arena into .agents/skills/design-arena/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-arena", 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 archestra-ai/archestra --skill design-arena -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install archestra-ai/archestra design-arena --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archestra-ai/archestra.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/design-arena .cursor/skills/design-arena && 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 "design-arena" agent skill from https://github.com/archestra-ai/archestra/tree/main/.agents/skills/design-arena into .cursor/skills/design-arena/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-arena", 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/archestra-ai/archestra.git --path .agents/skills/design-arena--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 archestra-ai/archestra --skill design-arena -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install archestra-ai/archestra design-arena --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archestra-ai/archestra.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/design-arena .gemini/skills/design-arena && 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 "design-arena" agent skill from https://github.com/archestra-ai/archestra/tree/main/.agents/skills/design-arena into .gemini/skills/design-arena/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-arena", 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 archestra-ai/archestra design-arenaInstalls 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 archestra-ai/archestra --skill design-arena -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/archestra-ai/archestra.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/design-arena .github/skills/design-arena && 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 "design-arena" agent skill from https://github.com/archestra-ai/archestra/tree/main/.agents/skills/design-arena into .github/skills/design-arena/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-arena", 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 archestra-ai/archestra --skill design-arena -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install archestra-ai/archestra design-arena --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/archestra-ai/archestra.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/design-arena .opencode/skills/design-arena && 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 "design-arena" agent skill from https://github.com/archestra-ai/archestra/tree/main/.agents/skills/design-arena into .opencode/skills/design-arena/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-arena", 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
design-arena- GitHub stars
- 4.4k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 466 words
- Files
- 1
- Skills in repo
- 23
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Run a design arena: a coordinator fans out N subagents (default 7) that each prototype one UI section through a different lens, switchable in-app via a temporary prototype selector, refined in rounds.
- Works in 6 steps: Mount the selector with "Current" =… → Pick N lenses: genuinely different takes… → Fan out N subagents in parallel, one… → …
- Tasks that involve Subagents
- SKILL.md covers Inputs, The prototype selector (same…, Commit guard (Biome) and Round loop, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Design Arena is an agent skill from archestra-ai/archestra. Run a design arena: a coordinator fans out N subagents (default 7) that each prototype one UI section through a different lens, switchable in-app via a temporary prototype selector, refined in rounds.
Its SKILL.md is about 1.1k 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 Subagents. The repository describes itself as: Enterprise AI Platform with guardrails, MCP registry, gateway & orchestrator.
When your agent uses it
- Tasks that involve Subagents
Example prompts
- “/design-arena”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Mount the selector with "Current" = today's section.
- Pick N lenses: genuinely different takes (layout, density, metaphor, interaction, scale). Post them as a numbered one-liner list.
- Fan out N subagents in parallel, one file each. Brief: requirements, its lens, accumulated feedback constraints, the taste skill, its…
- Check each variant renders; re-spawn broken ones.
- Present the URL and numbered list; ask which wins and what to change.
- Refine: the winner (or a blend) becomes the baseline. Restate feedback as concrete constraints carried into every future brief (ask first…
What it can do on your machine
Read from SKILL.md and the folder at commit df802e7. 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 (its code samples are typescript and grit).
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
Design Arena loads about 1.1k tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 466 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 466 words (~1,070 tokens).
“Hammer out many design directions for ONE section of a real app page and find what looks good. You (the coordinator) mount a temporary prototype selector in that section, fan out N subagents that each build one variant through a…”
- name
- design-arena
Files
Just SKILL.md in .agents/skills/design-arena of archestra-ai/archestra.
Open the folder on GitHubat commit df802e7
Compare with similar skills
Design Arena 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 |
|---|---|---|---|---|---|---|
| Design Arena this skillarchestra-ai/archestra | 4.4k | — | ~1.1k | Automated safety check: Pass | Custom licence | |
| O2 Review Loopopenobserve/openobserve | 22k | — | ~3.7k | Automated safety check: Pass | AGPL-3.0 | |
| V2 Perf Iterationmirage-project/mirage | 2.5k | — | ~4k | Automated safety check: Pass | Apache-2.0 | |
| Clone App Pat Proper-simmons/clone-app-pat-pro-public | 259 | — | ~1.9k | Automated safety check: Notes | None | |
| Kimi Code DelegationCherryHQ/cherry-studio | 53k | — | ~504 | Automated safety check: Pass | AGPL-3.0 | |
| Team Modeoil-oil/codex-team-mode | 217 | — | ~1.3k | Automated safety check: Pass | MIT |
Similar skills
V2 Perf Iteration
mirage-project/mirage
Runtime-V2 performance-iteration workflow. An agent skill from mirage-project/mirage.
Clone App Pat Pro
per-simmons/clone-app-pat-pro-public
Clones any web app pixel-for-pixel from a URL. An agent skill from per-simmons/clone-app-pat-pro-public.
Kimi Code Delegation
CherryHQ/cherry-studio
Delegates one bounded repository task to Kimi Code in non-interactive prompt mode and reads back the final result from its JSON event stream.
Team Mode
oil-oil/codex-team-mode
A skill your agent uses when a task may benefit from a bounded subagent for implementation, large-codebase discovery at task start, independent review, requested or pre-commit code simplification…
- Official
Review
getsentry/sentry-react-native
Three-axis review of the branch diff — Standards (this repo's documented standards + public API/bridge surface), Spec (the originating Linear/GitHub issue or PR), and Correctness (runtime bugs + the…
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Related
Questions about Design Arena
What does Design Arena do?
Run a design arena: a coordinator fans out N subagents (default 7) that each prototype one UI section through a different lens, switchable in-app via a temporary prototype selector, refined in rounds. Design Arena is an agent skill from archestra-ai/archestra. Run a design arena: a coordinator fans out N subagents (default 7) that each prototype one UI section through a different lens, switchable in-app via a temporary prototype selector, refined in rounds.
When should I use Design Arena?
Design Arena fits situations like: tasks that involve Subagents.
How do I install Design Arena in Claude Code?
Run `npx skills add archestra-ai/archestra --skill design-arena -a claude-code`. Or copy the skill folder (.agents/skills/design-arena in archestra-ai/archestra) into .claude/skills/design-arena in your project. Claude Code loads it when a task matches its description.
How do I install Design Arena in Codex?
Run `npx skills add archestra-ai/archestra --skill design-arena -a codex`. Or copy the skill folder (.agents/skills/design-arena in archestra-ai/archestra) into .agents/skills/design-arena in your project. Codex loads it when a task matches its description.
Can I use Design Arena 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 archestra-ai/archestra --skill design-arena -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/design-arena, .gemini/skills/design-arena, .github/skills/design-arena and .opencode/skills/design-arena in your project.
What does Design Arena need to run?
SKILL.md names no scripts, command-line tools or credentials: Design Arena is instructions for the agent only.
Does Design Arena 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 Design Arena 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 Design Arena use?
Design Arena has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Design Arena use?
About 1.1k tokens (SKILL.md is roughly 4.3k 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 Design Arena?
Skills that share tags, products or a category with Design Arena: O2 Review Loop (openobserve/openobserve, 22k stars), V2 Perf Iteration (mirage-project/mirage, 2.5k stars), Clone App Pat Pro (per-simmons/clone-app-pat-pro-public, 259 stars) and Kimi Code Delegation (CherryHQ/cherry-studio, 53k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Design Arena?
archestra-ai (a GitHub organization) maintains it in archestra-ai/archestra, which has 4,368 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 10, 2026.
Source: archestra-ai/archestra on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.