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Agent skill

E2E Agent Browser

by jh941213 in jh941213/my-cc-harness

agent-browser CLI를 활용한 E2E 테스트 자동화. An agent skill from jh941213/my-cc-harness.

No licenceAuto-check: notesTesting & QA

Install E2E Agent Browser

skills CLI
$ npx skills add jh941213/my-cc-harness --skill e2e-agent-browser -a claude-code

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

GitHub CLI
$ gh skill install jh941213/my-cc-harness e2e-agent-browser --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/jh941213/my-cc-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/e2e-agent-browser .claude/skills/e2e-agent-browser && 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
e2e-agent-browser
GitHub stars
126
Token cost
~2.7k tokens
SKILL.md length
255 words
Files
3
Skills in repo
62
Repo updated
First seen
Licence
None found

At a glance

agent-browser CLI를 활용한 E2E 테스트 자동화. An agent skill from jh941213/my-cc-harness.

  • Works in 8 steps: 스냅샷 + Ref 워크플로우 → 스냅샷 옵션 → JSON 모드 (AI 에이전트용) → …
  • Tasks that involve End-to-end testing
  • SKILL.md covers 이 스킬을 사용할 때, 설치, 핵심 개념 and E2E 테스트 패턴, plus 4 more sections
  • Runs JavaScript and Shell scripts from its folder; calls npm; needs BROWSERBASE_API_KEY

What it does

E2E Agent Browser is an agent skill from jh941213/my-cc-harness. agent-browser CLI를 활용한 E2E 테스트 자동화. 스냅샷 기반 접근성 트리와 ref 시스템으로 안정적인 브라우저 테스트를 수행. 트리거: "E2E", "브라우저 테스트", "agent-browser", "e2e 테스트 작성", "E2E 테스트", "브라우저 자동화" 안티-트리거: "유닛 테스트", "API 테스트", "pytest", "Jest 테스트만", "Playwright 직접 사용"

Its SKILL.md is about 2.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `templates/runner.js` and `templates/test-suite.sh`).

It sits in Testing & QA, covering End-to-end testing, Browser automation and Unit testing. It works with Jest, Playwright and pytest.

When your agent uses it

  • Tasks that involve End-to-end testing
  • Tasks that involve Browser automation
  • Tasks that involve Unit testing

Example prompts

  • “agent-browser”
  • “e2e 테스트 작성”
  • “E2E 테스트”
  • “/e2e-agent-browser”

Requirements

  • Node.js
  • A Bash shell
  • A credential in BROWSERBASE_API_KEY

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. 스냅샷 + Ref 워크플로우
  2. 스냅샷 옵션
  3. JSON 모드 (AI 에이전트용)
  4. 스냅샷 우선 접근
  5. 안정적인 대기
  6. 에러 핸들링
  7. 환경별 설정
  8. 테스트 격리

What it can do on your machine

Read from SKILL.md and the folder at commit e9210e2. 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

    Ships script files (JavaScript and Shell), which the agent can run.

    Shell commands in SKILL.md call:

    • npm

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

  • Network

    Links to these hosts (documentation or services it may open):

    • agent-browser.dev
    • github.com
    • playwright.dev

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • BROWSERBASE_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

E2E Agent Browser loads about 2.7k tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 255 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~2.7k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:611
    # .env.test

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 255 words (~2,721 tokens).

“AI 에이전트를 위한 헤드리스 브라우저 자동화 CLI agent-browser를 활용하여 E2E 테스트를 작성하고 실행하는 종합 가이드입니다.”

— opening of SKILL.md by jh941213
name
e2e-agent-browser
user-invocable
false

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files in skills/e2e-agent-browser of jh941213/my-cc-harness.

  • SKILL.md
  • templates/runner.js
  • templates/test-suite.sh

Open the folder on GitHubat commit e9210e2

Compare with similar skills

E2E Agent Browser 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.

E2E Agent Browser compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
E2E Agent Browser this skilljh941213/my-cc-harness126—~2.7kAutomated safety check: NotesNone
Playwright Testingchongdashu/vibejam-starter-pack149—~2.2kAutomated safety check: PassNone
Test Detectdavila7/claude-code-templates32k—~989Automated safety check: PassMIT
Designing TestsCloudAI-X/claude-workflow-v21.4k1 repos~1.5kAutomated safety check: PassMIT
Playwright Testingchongdashu/vibejam-starter-pack149—~2.1kAutomated safety check: PassNone
Odc TestingDouglasNeuroInformatics/OpenDataCapture119—~1.5kAutomated safety check: NotesApache-2.0

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    149 GitHub stars~2.2k tokensUpdated 5 mo ago
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Works with

Categories

Questions about E2E Agent Browser

What does E2E Agent Browser do?

agent-browser CLI를 활용한 E2E 테스트 자동화. An agent skill from jh941213/my-cc-harness. E2E Agent Browser is an agent skill from jh941213/my-cc-harness. agent-browser CLI를 활용한 E2E 테스트 자동화.

When should I use E2E Agent Browser?

E2E Agent Browser fits situations like: tasks that involve End-to-end testing; tasks that involve Browser automation; tasks that involve Unit testing.

How do I install E2E Agent Browser in Claude Code?

Run `npx skills add jh941213/my-cc-harness --skill e2e-agent-browser -a claude-code`. Or copy the skill folder (skills/e2e-agent-browser in jh941213/my-cc-harness) into .claude/skills/e2e-agent-browser in your project. Claude Code loads it when a task matches its description.

How do I install E2E Agent Browser in Codex?

Run `npx skills add jh941213/my-cc-harness --skill e2e-agent-browser -a codex`. Or copy the skill folder (skills/e2e-agent-browser in jh941213/my-cc-harness) into .agents/skills/e2e-agent-browser in your project. Codex loads it when a task matches its description.

Can I use E2E Agent Browser 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 jh941213/my-cc-harness --skill e2e-agent-browser -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/e2e-agent-browser, .gemini/skills/e2e-agent-browser, .github/skills/e2e-agent-browser and .opencode/skills/e2e-agent-browser in your project.

What does E2E Agent Browser need to run?

Going by SKILL.md and its folder, E2E Agent Browser needs JavaScript and a shell for the scripts in its folder, the command-line tools its instructions call (npm) and credentials named BROWSERBASE_API_KEY. Our summary lists: Node.js; A Bash shell; A credential in BROWSERBASE_API_KEY.

Does E2E Agent Browser access the network?

SKILL.md names 3 domains. As links in the text: agent-browser.dev, github.com and playwright.dev. This is read from the text; nothing was executed.

Is E2E Agent Browser safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does E2E Agent Browser use?

No licence was found for E2E Agent Browser or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does E2E Agent Browser use?

About 2.7k tokens (SKILL.md is roughly 11k 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 E2E Agent Browser?

Skills that share tags, products or a category with E2E Agent Browser: Playwright Testing (chongdashu/vibejam-starter-pack, 149 stars), Test Detect (davila7/claude-code-templates, 32k stars), Designing Tests (CloudAI-X/claude-workflow-v2, 1.4k stars) and Playwright Testing (chongdashu/vibejam-starter-pack, 149 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains E2E Agent Browser?

jh941213 (a GitHub user) maintains it in jh941213/my-cc-harness, which has 126 GitHub stars. The repository holds 62 skills in this directory. The repository was last updated on August 3, 2026.

Source: jh941213/my-cc-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.