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Agent skill

Dev Browser

by udecode in udecode/plate

Fallback browser automation with persistent Chrome state. An agent skill from udecode/plate.

Custom licenceAuto-check passedProductivity & Automation

Install Dev Browser

skills CLI
$ npx skills add udecode/plate --skill dev-browser -a claude-code

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

GitHub CLI
$ gh skill install udecode/plate dev-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/udecode/plate.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/dev-browser .claude/skills/dev-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
dev-browser
GitHub stars
17k
Token cost
~1.4k tokens
SKILL.md length
540 words
Files
1
Skills in repo
78
Repo updated
First seen
Licence
Custom licence

At a glance

Fallback browser automation with persistent Chrome state. An agent skill from udecode/plate.

  • Works in 5 steps: Pick a separate signed-in Chrome profile… → Map that human-facing Chrome profile… → Clone that profile into the dedicated… → …
  • Tasks that involve Browser automation
  • SKILL.md covers Installation, Plate Defaults, Fallback Setup and Rules, plus 2 more sections
  • Calls curl, npm and jq

What it does

Dev Browser is an agent skill from udecode/plate. Fallback browser automation with persistent Chrome state. Use only when Browser Use is unavailable or blocked.

Its SKILL.md is about 1.4k 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 Productivity & Automation, covering Browser automation. The repository describes itself as: Rich-text editor with AI and shadcn/ui.

When your agent uses it

  • Tasks that involve Browser automation

Example prompts

  • “/dev-browser”

Requirements

  • Python 3
  • Node.js

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Pick a separate signed-in Chrome profile for agent work, like dev, not the daily Default profile.
  2. Map that human-facing Chrome profile name to the real folder in Local State.
  3. Clone that profile into the dedicated debug dir.
  4. Launch a separate Chrome instance on 9222.
  5. Leave that debug window open and reuse it.

What it can do on your machine

Read from SKILL.md and the folder at commit a860762. 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:

    • curl
    • npm
    • jq
    • python3
    • rsync

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

  • Network

    No URLs in SKILL.md. Its commands use curl, npm and rsync, 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

Dev Browser loads about 1.4k tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 540 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~31
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

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 540 words (~1,389 tokens).

“Use this only as the fallback browser path when @browser-use is unavailable or blocked.”

— opening of SKILL.md by udecode, Custom licence
name
dev-browser

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/dev-browser of udecode/plate.

Open the folder on GitHubat commit a860762

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in udecode/plate, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Dev 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.

Dev Browser compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Dev Browser this skilludecode/plate17k—~1.4kAutomated safety check: PassCustom licence
Agent Browserquran/quran.com-frontend-next1.9k41 repos~3.3kAutomated safety check: PassNone
Dev-Browser CLI AutomationSawyerHood/dev-browser6.7k1 repos~455Automated safety check: PassMIT
Camoufox CLIBin-Huang/camoufox-cli3501 repos~4.5kAutomated safety check: PassMIT
BrowserVibiumDev/vibium2.9k—~4.8kAutomated safety check: PassApache-2.0
Use Agent Browser For Airimoeru-ai/airi50k—~1.1kAutomated safety check: PassMIT

Similar skills

  • Agent Browser

    quran/quran.com-frontend-next

    Automates browser interactions for web testing, form filling, screenshots, and data extraction.

    1.9k GitHub starsUsed in 41 repos~3.3k tokens
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  • Dev-Browser CLI Automation

    SawyerHood/dev-browser

    Browser automation with persistent named pages via the dev-browser CLI. Use when users ask to navigate websites, fill forms, take screenshots, extract web…

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  • Camoufox CLI

    Bin-Huang/camoufox-cli

    Anti-detect browser automation CLI & Skills for AI agents. An agent skill from Bin-Huang/camoufox-cli.

    350 GitHub starsUsed in 1 repo~4.5k tokens
    Productivity & AutomationAuto-check passed

  • Browser

    VibiumDev/vibium

    Automate browsers with the Vibium CLI. An agent skill from VibiumDev/vibium.

    2.9k GitHub stars~4.8k tokensUpdated yesterday
    Productivity & AutomationAuto-check passed

  • Use Agent Browser For Airi

    moeru-ai/airi

    Test AIRI display-model imports with agent-browser across stage-tamagotchi Electron, stage-web, and stage-pocket mobile web layouts.

    50k GitHub stars~1.1k tokensUpdated today
    Productivity & AutomationAuto-check passed

  • Browser Use Terminal

    browser-use/terminal

    Direct browser control via the Browser Use Terminal CLI. An agent skill from browser-use/terminal.

    651 GitHub stars~2.1k tokensUpdated 1 mo ago
    Productivity & AutomationAuto-check passed

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Categories

Questions about Dev Browser

What does Dev Browser do?

Fallback browser automation with persistent Chrome state. An agent skill from udecode/plate. Dev Browser is an agent skill from udecode/plate. Fallback browser automation with persistent Chrome state.

When should I use Dev Browser?

Dev Browser fits situations like: tasks that involve Browser automation.

How do I install Dev Browser in Claude Code?

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

How do I install Dev Browser in Codex?

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

Can I use Dev 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 udecode/plate --skill dev-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/dev-browser, .gemini/skills/dev-browser, .github/skills/dev-browser and .opencode/skills/dev-browser in your project.

What does Dev Browser need to run?

Going by SKILL.md and its folder, Dev Browser needs the command-line tools its instructions call (curl, npm, jq, python3 and rsync). Our summary lists: Python 3; Node.js.

Does Dev Browser access the network?

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

Is Dev Browser 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 Dev Browser use?

Dev Browser 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 Dev Browser use?

About 1.4k tokens (SKILL.md is roughly 5.6k 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 Dev Browser?

Skills that share tags, products or a category with Dev Browser: Agent Browser (quran/quran.com-frontend-next, 1.9k stars), Dev-Browser CLI Automation (SawyerHood/dev-browser, 6.7k stars), Camoufox CLI (Bin-Huang/camoufox-cli, 350 stars) and Browser (VibiumDev/vibium, 2.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Dev Browser?

udecode (a GitHub organization) maintains it in udecode/plate, which has 16,638 GitHub stars. The repository holds 78 skills in this directory. The repository was last updated on October 7, 2026.

Source: udecode/plate on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.