Agent skill

Evanflow

by evanklem in evanklem/evanflow

Meta skill for the EvanFlow system. An agent skill from evanklem/evanflow.

Custom licenceAuto-check passedTesting & QA

Install Evanflow

skills CLI
$ npx skills add evanklem/evanflow --skill evanflow -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install evanklem/evanflow evanflow --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/evanklem/evanflow.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/evanflow .claude/skills/evanflow && rm -rf skills-src

Use ~/.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/

Facts

Skill name
evanflow
GitHub stars
418
Token cost
~2.5k tokens
SKILL.md length
1,045 words
Files
1
Skills in repo
14
Repo updated
First seen
Licence
Custom licence

At a glance

Meta skill for the EvanFlow system. An agent skill from evanklem/evanflow.

  • Starting a new task and unsure which evanflow skill applies
  • SKILL.md covers Single Entry Point: evanflow-go, Shared Vocabulary, Hard Rules (apply to every… and The Default Loop, plus 2 more sections
  • Calls git
  • You need to ground reasoning in the shared vocabulary

What it does

Evanflow is an agent skill from evanklem/evanflow. Meta skill for the EvanFlow system. Loads the shared vocabulary (deep modules, deletion test, vertical slice, grill, mockup quick-mode, no-auto-commit) and describes when to invoke each evanflow- skill. Use when starting a new task and unsure which evanflow skill applies, or when you need to ground reasoning in the shared vocabulary.

Its SKILL.md is about 2.5k 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 Testing & QA. 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

  • Starting a new task and unsure which evanflow skill applies
  • You need to ground reasoning in the shared vocabulary

Example prompts

  • “/evanflow”

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

    Shell commands in SKILL.md call:

    • git

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    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 loads about 2.5k tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 1,045 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~86
When it runs · the whole SKILL.md, loaded when a task matches
~2.5k

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 1,045 words (~2,490 tokens).

“A TDD-driven iterative feedback loop for software development with Claude Code. 16 cohesive skills + 2 custom subagents walk an idea from brainstorm → plan → execute → tdd → iterate, with checkpoints throughout. Vertical-slice TDD, parallel coder/overseer review, executable…”

— opening of SKILL.md by evanklem, Custom licence
name
evanflow

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/evanflow of evanklem/evanflow.

Open the folder on GitHubat commit c9ae21f

Compare with similar skills

Evanflow 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.

Evanflow compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Evanflow this skillevanklem/evanflow418—~2.5kAutomated safety check: PassCustom licence
Web Application Testinganthropics/skills180k51 repos~966Automated safety check: PassApache-2.0
Diagnosing Bugsfossasia/eventyay-interpretation1.6k31 repos~2.1kAutomated safety check: PassApache-2.0
TDDfossasia/eventyay-interpretation1.6k28 repos~1.1kAutomated safety check: PassApache-2.0
TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph11211 repos~2.4kAutomated safety check: PassNone
TDDsanity-io/sanity6.4k20 repos~1kAutomated safety check: PassMIT

Similar skills

  • Web Application Testing

    anthropics/skills

    Official

    Tests local web applications with Python Playwright scripts, checking frontend behavior, capturing screenshots and reading browser console logs.

    180k GitHub starsUsed in 51 repos~966 tokens
    Testing & QAAuto-check passed
  • Diagnosing Bugs

    fossasia/eventyay-interpretation

    Diagnosis loop for hard bugs and performance regressions. An agent skill from fossasia/eventyay-interpretation.

    1.6k GitHub starsUsed in 31 repos~2.1k tokens
    Testing & QAAuto-check passed
  • TDD

    fossasia/eventyay-interpretation

    Test-driven development. An agent skill from fossasia/eventyay-interpretation.

    1.6k GitHub starsUsed in 28 repos~1.1k tokens
    Testing & QAAuto-check passed
  • TDD Workflow

    hellangleZ/burn-in-cceverywhere-ralph

    A skill your agent uses when writing new features, fixing bugs, or refactoring code.

    112 GitHub starsUsed in 11 repos~2.4k tokens
    Testing & QAAuto-check passed
  • TDD

    sanity-io/sanity

    Official

    Test-driven development with red-green-refactor loop. An agent skill from sanity-io/sanity.

    6.4k GitHub starsUsed in 20 repos~1k tokens
    Testing & QAAuto-check passed
  • Context Driven Development

    Ibrahim-3d/orchestrator-supaconductor

    A skill your agent uses when working with Conductor's context-driven development methodology, managing project context artifacts, or understanding the relationship between product.md, tech-stack.md…

    380 GitHub starsUsed in 8 repos~2.9k tokens
    Testing & QAAuto-check passed

More from evanklem/evanflow

All 14 skills in this repo
  • Evanflow Coder Overseer

    evanklem/evanflow

    Orchestrate parallel implementation with coder/overseer pairs.

    418 GitHub stars~3.9k tokensUpdated 4 mo ago
    Auto-check passed
  • Evanflow Glossary

    evanklem/evanflow

    Extract canonical domain terms into CONTEXT.md. An agent skill from evanklem/evanflow.

    418 GitHub stars~829 tokensUpdated 4 mo ago
    Auto-check passed
  • Evanflow Prd

    evanklem/evanflow

    Synthesize a PRD (Product Requirements Document) for a big new feature.

    418 GitHub stars~817 tokensUpdated 4 mo ago
    Auto-check passed
  • Evanflow QA

    evanklem/evanflow

    Conversational bug discovery → issue draft. An agent skill from evanklem/evanflow.

    418 GitHub stars~718 tokensUpdated 4 mo ago
    Auto-check passed
  • Evanflow TDD

    evanklem/evanflow

    Vertical-slice TDD for any production code. An agent skill from evanklem/evanflow.

    418 GitHub stars~2k tokensUpdated 4 mo ago
    Auto-check passed
  • Evanflow Compact

    evanklem/evanflow

    Manage long-session context to prevent drift and degradation.

    418 GitHub stars~1.6k tokensUpdated 4 mo ago
    Auto-check passed

Categories

Questions about Evanflow

What does Evanflow do?

Meta skill for the EvanFlow system. An agent skill from evanklem/evanflow. Evanflow is an agent skill from evanklem/evanflow. Meta skill for the EvanFlow system.

When should I use Evanflow?

Evanflow fits situations like: starting a new task and unsure which evanflow skill applies; you need to ground reasoning in the shared vocabulary.

How do I install Evanflow in Claude Code?

Run `npx skills add evanklem/evanflow --skill evanflow -a claude-code`. Or copy the skill folder (skills/evanflow in evanklem/evanflow) into .claude/skills/evanflow in your project. Claude Code loads it when a task matches its description.

How do I install Evanflow in Codex?

Run `npx skills add evanklem/evanflow --skill evanflow -a codex`. Or copy the skill folder (skills/evanflow in evanklem/evanflow) into .agents/skills/evanflow in your project. Codex loads it when a task matches its description.

Can I use Evanflow 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 -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, .gemini/skills/evanflow, .github/skills/evanflow and .opencode/skills/evanflow in your project.

What does Evanflow need to run?

Going by SKILL.md and its folder, Evanflow needs the command-line tools its instructions call (git).

Does Evanflow access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Evanflow 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 use?

Evanflow 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 use?

About 2.5k tokens (SKILL.md is roughly 10k 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?

Skills that share tags, products or a category with Evanflow: Web Application Testing (anthropics/skills, 180k stars), Diagnosing Bugs (fossasia/eventyay-interpretation, 1.6k stars), TDD (fossasia/eventyay-interpretation, 1.6k stars) and TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Evanflow?

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.