playjev
PlayJev (filedcom): Stagehand-style natural-language browser automation for Playwright where Jev makes the browser decisions.
Overview
PlayJev by filedcom is a TypeScript library for controlling websites with plain-English instructions while keeping the full Playwright API. You wrap an existing Playwright page and call act to click controls, navigate, fill forms or choose between visible options, and check to ask questions about page state. The README describes it as Stagehand, but with Jev making the browser decisions instead of a generative LLM. It is a different project from the PlayJev game model.
A 48-second demo shows it running public Browserbase/Stagehand evaluation pages: selecting checkboxes, operating a custom dropdown, filling a cross-origin iframe form and navigating multiple pages. It is experimental, with an API still evolving as it is tested on broader benchmarks, and currently requires Chromium/CDP and TypeSafe Jev access. It needs Node.js 20+.
What the decision model decides
| Type | Question | Answers |
|---|---|---|
| Choice | Which page element should be acted on for this instruction?(inferred) | — |
| Yes / no | Did the form submit successfully? | yes · no |
How it works
- Wrap a Playwright page with playjev().
- Call page.act with a plain-English instruction.
- Jev chooses the element and action from the page.
- Use page.check to verify page state.
Strengths
- Keeps the full Playwright API.
- No generative LLM for browser decisions.
- Handles iframes and custom controls in demos.
Caveats
- Experimental, evolving API.
- Chromium/CDP only; requires a TypeSafe key.
Getting started
npm install @filed/playjev playwright && npx playwright install chromium, then export TYPESAFE_API_KEY.At a glance
- Type
- Project
- Status
- prototype
- Language
- TypeScript
- Runtime
- Node, Playwright
- Has code
- yes
Use cases and integrations
How curated lists describe it
Natural-language browser automation for Playwright, in the shape of Stagehand. Not the same project as the PlayJev decision model below.
MrJev/awesome-jev
Frequently asked questions
How is it different from Stagehand?
Jev makes the browser decisions instead of a generative LLM.
Is it the PlayJev game model?
No, it is a separate browser automation library.
Which browsers are supported?
Chromium via CDP.
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