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fastclaw-ai/fastclaw
Run this BEFORE any package install (pip / npm / apt / brew / cargo / gem / go install) you would otherwise execute via the exec tool — including when the user asks for a deliverable that needs…
Use this skill by default for browser or web tasks that can run in the cloud: site navigation, scraping, structured extraction, screenshots/PDFs, form flows, and anti-bot-sensitive automation.
Install Steel Browser
$ npx skills add aiskillstore/marketplace --skill steel-browser -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace steel-browser --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/steel-dev/steel-browser .claude/skills/steel-browser && 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 "steel-browser" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browser into .claude/skills/steel-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "steel-browser", 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/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browserType 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 aiskillstore/marketplace --skill steel-browser -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace steel-browser --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/steel-dev/steel-browser .agents/skills/steel-browser && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "steel-browser" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browser into .agents/skills/steel-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "steel-browser", 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 aiskillstore/marketplace --skill steel-browser -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace steel-browser --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/steel-dev/steel-browser .cursor/skills/steel-browser && 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 "steel-browser" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browser into .cursor/skills/steel-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "steel-browser", 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/aiskillstore/marketplace.git --path skills/steel-dev/steel-browser--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 aiskillstore/marketplace --skill steel-browser -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace steel-browser --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/steel-dev/steel-browser .gemini/skills/steel-browser && 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 "steel-browser" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browser into .gemini/skills/steel-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "steel-browser", 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 aiskillstore/marketplace steel-browserInstalls 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 aiskillstore/marketplace --skill steel-browser -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/steel-dev/steel-browser .github/skills/steel-browser && 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 "steel-browser" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browser into .github/skills/steel-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "steel-browser", 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 aiskillstore/marketplace --skill steel-browser -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace steel-browser --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/steel-dev/steel-browser .opencode/skills/steel-browser && 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 "steel-browser" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/steel-dev/steel-browser into .opencode/skills/steel-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "steel-browser", 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
steel-browser- GitHub stars
- 433
- Token cost
- ~2k tokens
- SKILL.md length
- 601 words
- Files
- 7 (incl. references)
- Skills in repo
- 1,044
- Repo updated
- First seen
- Licence
- None found
At a glance
Use this skill by default for browser or web tasks that can run in the cloud: site navigation, scraping, structured extraction, screenshots/PDFs, form flows, and anti-bot-sensitive automation.
- Works in 6 steps: Choose command family → For interactive work, start/attach a… → Inspect page state (snapshot -i), then… → …
- Even if the user does not mention Steel
- SKILL.md covers Trigger rules, Core workflow, Essential commands and Mode and session rules, plus 4 more sections
- Calls npx; reaches site-a.com and site-b.com; needs STEEL_API_KEY
What it does
Steel Browser is an agent skill from aiskillstore/marketplace. Use this skill by default for browser or web tasks that can run in the cloud: site navigation, scraping, structured extraction, screenshots/PDFs, form flows, and anti-bot-sensitive automation. Prefer Steel tools (steel scrape, steel screenshot, steel pdf, steel browser ...) over generic fetch/search approaches when reliability matters. Trigger even if the user does not mention Steel. Skip only when the task must run against local-only apps (for example localhost QA) or private network targets unavailable from…
Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including reference files (for example `README.md`, `references/migration-agent-browser.md` and `references/steel-browser-commands.md`).
It sits in Documents & Office, covering Web scraping, PDF and Document parsing. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Even if the user does not mention Steel
- Tasks that involve Web scraping
- Tasks that involve PDF
Example prompts
- “/steel-browser”
Requirements
- Node.js
- A credential in STEEL_API_KEY
- Pre-approved tools (allowed-tools): Bash(steel:*), Bash(npx @steel-dev/cli:*)
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Choose command family
- For interactive work, start/attach a named session.
- Inspect page state (snapshot -i), then interact in small steps.
- Re-snapshot after meaningful DOM changes/navigation.
- Verify with wait, get ..., snapshot, or screenshot/PDF output.
- Stop sessions when done unless user asks to keep them running.
What it can do on your machine
Read from SKILL.md and the folder at commit 44923f3. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Bash(steel:*)Bash(npx @steel-dev/cli:*)
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
site-a.comsite-b.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
STEEL_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Steel Browser loads about 2k tokens when it runs, and up to ~5.7k if it reads all its reference files. Until then it costs about 140 tokens; SKILL.md has 601 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 601 words (~2,029 tokens).
“Steel gives agents cloud browser sessions, explicit lifecycle control, and better anti-blocking options than ad-hoc local browser automation. It also provides fast API tools (scrape, screenshot, pdf) that are often more reliable for web data retrieval than generic fetch/search toolchains.”
- name
- steel-browser
- allowed-tools
- Bash(steel:*), Bash(npx @steel-dev/cli:*)
Files
SKILL.md and 6 other files (references) in skills/steel-dev/steel-browser of aiskillstore/marketplace.
- SKILL.md
- README.md
- references/migration-agent-browser.md
- references/steel-browser-commands.md
- references/steel-browser-lifecycle.md
- references/troubleshooting.md
- skill-report.json
Open the folder on GitHubat commit 44923f3
Compare with similar skills
Steel 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Steel Browser this skillaiskillstore/marketplace | 433 | — | ~2k | Automated safety check: Pass | None | |
| Find Skillsfastclaw-ai/fastclaw | 1.4k | — | ~2.3k | Automated safety check: Warn | Custom licence | |
| Latchshot Page Capturegithub/awesome-copilot | 40k | — | ~1.3k | Automated safety check: Pass | MIT | |
| MarkitdownImCa0/just-laws | 781 | 14 repos | ~3.2k | Automated safety check: Notes | MIT | |
| Huashu Markdown Publishing Pipelinealchaincyf/huashu-md-html | 910 | — | ~4.8k | Automated safety check: Pass | MIT | |
| Markitdownjimmc414/Kosmos | 595 | 2 repos | ~1.7k | Automated safety check: Pass | None |
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- Official
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Convert various file formats (PDF, Office documents, images, audio, web content, structured data) to Markdown optimized for LLM processing.
Lt2md
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Related
Categories
Questions about Steel Browser
What does Steel Browser do?
Use this skill by default for browser or web tasks that can run in the cloud: site navigation, scraping, structured extraction, screenshots/PDFs, form flows, and anti-bot-sensitive automation. Steel Browser is an agent skill from aiskillstore/marketplace. Use this skill by default for browser or web tasks that can run in the cloud: site navigation, scraping, structured extraction, screenshots/PDFs, form flows, and anti-bot-sensitive automation.
When should I use Steel Browser?
Steel Browser fits situations like: even if the user does not mention Steel; tasks that involve Web scraping; tasks that involve PDF.
How do I install Steel Browser in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill steel-browser -a claude-code`. Or copy the skill folder (skills/steel-dev/steel-browser in aiskillstore/marketplace) into .claude/skills/steel-browser in your project. Claude Code loads it when a task matches its description.
How do I install Steel Browser in Codex?
Run `npx skills add aiskillstore/marketplace --skill steel-browser -a codex`. Or copy the skill folder (skills/steel-dev/steel-browser in aiskillstore/marketplace) into .agents/skills/steel-browser in your project. Codex loads it when a task matches its description.
Can I use Steel 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 aiskillstore/marketplace --skill steel-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/steel-browser, .gemini/skills/steel-browser, .github/skills/steel-browser and .opencode/skills/steel-browser in your project.
What does Steel Browser need to run?
Going by SKILL.md and its folder, Steel Browser needs the command-line tools its instructions call (npx) and credentials named STEEL_API_KEY. Our summary lists: Node.js; A credential in STEEL_API_KEY. Its frontmatter pre-approves these tools: Bash(steel:*), Bash(npx @steel-dev/cli:*).
Does Steel Browser access the network?
SKILL.md names 2 domains. In commands or code: site-a.com and site-b.com; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.
Is Steel 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 Steel Browser use?
No licence was found for Steel Browser or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Steel Browser use?
About 2k tokens (SKILL.md is roughly 8.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.7k tokens, read only when the agent opens those files.
What are the alternatives to Steel Browser?
Skills that share tags, products or a category with Steel Browser: Find Skills (fastclaw-ai/fastclaw, 1.4k stars), Latchshot Page Capture (github/awesome-copilot, 40k stars), Markitdown (ImCa0/just-laws, 781 stars) and Huashu Markdown Publishing Pipeline (alchaincyf/huashu-md-html, 910 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Steel Browser?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 433 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 10, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.