Claude Code
kortix-ai/suna
Drive Anthropic's Claude Code CLI (claude -p) as a non-interactive coding sub-agent from inside Codex.
Design a module's interface using parallel sub-agents producing radically different designs ("design it twice").
Install Evanflow Design Interface
$ npx skills add evanklem/evanflow --skill evanflow-design-interface -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install evanklem/evanflow evanflow-design-interface --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/evanklem/evanflow.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/evanflow-design-interface .claude/skills/evanflow-design-interface && 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 "evanflow-design-interface" agent skill from https://github.com/evanklem/evanflow/tree/main/skills/evanflow-design-interface into .claude/skills/evanflow-design-interface/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "evanflow-design-interface", 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/evanklem/evanflow/tree/main/skills/evanflow-design-interfaceType 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 evanklem/evanflow --skill evanflow-design-interface -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install evanklem/evanflow evanflow-design-interface --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evanklem/evanflow.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/evanflow-design-interface .agents/skills/evanflow-design-interface && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "evanflow-design-interface" agent skill from https://github.com/evanklem/evanflow/tree/main/skills/evanflow-design-interface into .agents/skills/evanflow-design-interface/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "evanflow-design-interface", 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 evanklem/evanflow --skill evanflow-design-interface -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install evanklem/evanflow evanflow-design-interface --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evanklem/evanflow.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/evanflow-design-interface .cursor/skills/evanflow-design-interface && 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 "evanflow-design-interface" agent skill from https://github.com/evanklem/evanflow/tree/main/skills/evanflow-design-interface into .cursor/skills/evanflow-design-interface/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "evanflow-design-interface", 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/evanklem/evanflow.git --path skills/evanflow-design-interface--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 evanklem/evanflow --skill evanflow-design-interface -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install evanklem/evanflow evanflow-design-interface --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evanklem/evanflow.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/evanflow-design-interface .gemini/skills/evanflow-design-interface && 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 "evanflow-design-interface" agent skill from https://github.com/evanklem/evanflow/tree/main/skills/evanflow-design-interface into .gemini/skills/evanflow-design-interface/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "evanflow-design-interface", 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 evanklem/evanflow evanflow-design-interfaceInstalls 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 evanklem/evanflow --skill evanflow-design-interface -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/evanklem/evanflow.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/evanflow-design-interface .github/skills/evanflow-design-interface && 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 "evanflow-design-interface" agent skill from https://github.com/evanklem/evanflow/tree/main/skills/evanflow-design-interface into .github/skills/evanflow-design-interface/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "evanflow-design-interface", 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 evanklem/evanflow --skill evanflow-design-interface -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install evanklem/evanflow evanflow-design-interface --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/evanklem/evanflow.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/evanflow-design-interface .opencode/skills/evanflow-design-interface && 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 "evanflow-design-interface" agent skill from https://github.com/evanklem/evanflow/tree/main/skills/evanflow-design-interface into .opencode/skills/evanflow-design-interface/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "evanflow-design-interface", 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
evanflow-design-interface- GitHub stars
- 418
- Token cost
- ~985 tokens
- SKILL.md length
- 475 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Design a module's interface using parallel sub-agents producing radically different designs ("design it twice").
- Works in 6 steps: Gather Requirements → Spawn Parallel Sub-Agents (Design It… → Present Designs Sequentially → …
- Designing a new API
- SKILL.md covers Vocabulary, When to Use, The Flow and Hard Rules, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Evanflow Design Interface is an agent skill from evanklem/evanflow. Design a module's interface using parallel sub-agents producing radically different designs ("design it twice"). Compare on depth, simplicity, and efficiency. Embedded grill on the synthesized choice. Use when designing a new API, exploring interface options, or deciding the shape of a refactor before writing code.
Its SKILL.md is about 990 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 and Refactoring. The repository describes itself as: A TDD-driven iterative feedback loop for software development. 16 cohesive Claude Code skills walk an idea from brainstorm → plan → execute → iterate, with checkpoints throughout.
When your agent uses it
- Designing a new API
- Exploring interface options
- Deciding the shape of a refactor before writing code
Example prompts
- “design it twice”
- “/evanflow-design-interface”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Gather Requirements
- Spawn Parallel Sub-Agents (Design It Twice — actually 3+)
- Present Designs Sequentially
- Compare
- Synthesize
- Embedded Grill on the Synthesis
What it can do on your machine
Read from SKILL.md and the folder at commit c9ae21f. 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
Evanflow Design Interface loads about 985 tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 475 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 475 words (~985 tokens).
“Source principle: "Design It Twice" from John Ousterhout's A Philosophy of Software Design. Your first idea is unlikely to be the best. Generate radically different designs, compare, synthesize.”
- name
- evanflow-design-interface
Files
Just SKILL.md in skills/evanflow-design-interface of evanklem/evanflow.
Open the folder on GitHubat commit c9ae21f
Compare with similar skills
Evanflow Design Interface 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 |
|---|---|---|---|---|---|---|
| Evanflow Design Interface this skillevanklem/evanflow | 418 | — | ~985 | Automated safety check: Pass | Custom licence | |
| Claude Codekortix-ai/suna | 20k | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Workflow Orchestrationvxcozy/workflow-orchestration | 115 | — | ~1k | Automated safety check: Pass | MIT | |
| Antigravity Agentsmarkfulton/claude-antigravity-agents | 130 | — | ~2.1k | Automated safety check: Pass | MIT | |
| Subagent Coordinatorflyxl/datazen | 114 | — | ~908 | Automated safety check: Pass | GPL-3.0 | |
| Orchestrate Batch RefactorDimillian/Skills | 4k | — | ~889 | Automated safety check: Pass | MIT |
Similar skills
Workflow Orchestration
vxcozy/workflow-orchestration
Disciplined task execution with planning, verification, and self-improvement loops.
Antigravity Agents
markfulton/claude-antigravity-agents
Delegate coding, code review, analysis, and research jobs to Google Antigravity CLI (agy) sub-agents that run alongside your own work.
Subagent Coordinator
flyxl/datazen
Orchestrate multi-track parallel feature development with subagents and git worktrees.
Orchestrate Batch Refactor
Dimillian/Skills
Plan and execute large refactor or rewrite efforts efficiently with parallel multi-agent analysis and implementation.
Batch Orchestration
rohitg00/pro-workflow
Decompose large-scale changes into independent units and spawn parallel agents in isolated worktrees.
More from evanklem/evanflow
All 14 skills in this repoEvanflow
evanklem/evanflow
Meta skill for the EvanFlow system. An agent skill from evanklem/evanflow.
Evanflow Coder Overseer
evanklem/evanflow
Orchestrate parallel implementation with coder/overseer pairs.
Evanflow Glossary
evanklem/evanflow
Extract canonical domain terms into CONTEXT.md. An agent skill from evanklem/evanflow.
Evanflow Prd
evanklem/evanflow
Synthesize a PRD (Product Requirements Document) for a big new feature.
Evanflow QA
evanklem/evanflow
Conversational bug discovery → issue draft. An agent skill from evanklem/evanflow.
Evanflow TDD
evanklem/evanflow
Vertical-slice TDD for any production code. An agent skill from evanklem/evanflow.
Related
Categories
Questions about Evanflow Design Interface
What does Evanflow Design Interface do?
Design a module's interface using parallel sub-agents producing radically different designs ("design it twice"). Evanflow Design Interface is an agent skill from evanklem/evanflow. Design a module's interface using parallel sub-agents producing radically different designs ("design it twice").
When should I use Evanflow Design Interface?
Evanflow Design Interface fits situations like: designing a new API; exploring interface options; deciding the shape of a refactor before writing code.
How do I install Evanflow Design Interface in Claude Code?
Run `npx skills add evanklem/evanflow --skill evanflow-design-interface -a claude-code`. Or copy the skill folder (skills/evanflow-design-interface in evanklem/evanflow) into .claude/skills/evanflow-design-interface in your project. Claude Code loads it when a task matches its description.
How do I install Evanflow Design Interface in Codex?
Run `npx skills add evanklem/evanflow --skill evanflow-design-interface -a codex`. Or copy the skill folder (skills/evanflow-design-interface in evanklem/evanflow) into .agents/skills/evanflow-design-interface in your project. Codex loads it when a task matches its description.
Can I use Evanflow Design Interface 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 evanklem/evanflow --skill evanflow-design-interface -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/evanflow-design-interface, .gemini/skills/evanflow-design-interface, .github/skills/evanflow-design-interface and .opencode/skills/evanflow-design-interface in your project.
What does Evanflow Design Interface need to run?
SKILL.md names no scripts, command-line tools or credentials: Evanflow Design Interface is instructions for the agent only.
Does Evanflow Design Interface 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 Evanflow Design Interface 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 Evanflow Design Interface use?
Evanflow Design Interface 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 Evanflow Design Interface use?
About 985 tokens (SKILL.md is roughly 3.9k 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 Evanflow Design Interface?
Skills that share tags, products or a category with Evanflow Design Interface: Claude Code (kortix-ai/suna, 20k stars), Workflow Orchestration (vxcozy/workflow-orchestration, 115 stars), Antigravity Agents (markfulton/claude-antigravity-agents, 130 stars) and Subagent Coordinator (flyxl/datazen, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Evanflow Design Interface?
evanklem (a GitHub user) maintains it in evanklem/evanflow, which has 418 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on May 13, 2026.
Source: evanklem/evanflow on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.