Gsd Browser
gsd-build/gsd-browser
Native Rust browser automation CLI for AI agents. An agent skill from gsd-build/gsd-browser.
Internal support skill for agent-browser CLI workflows used by rust-learner, docs-researcher, and crate-researcher.
Install Core Agent Browser
$ npx skills add NeverSight/learn-skills.dev --skill core-agent-browser -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install NeverSight/learn-skills.dev core-agent-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/NeverSight/learn-skills.dev.git skills-src && mkdir -p .claude/skills && cp -r skills-src/data/skills-md/actionbook/rust-skills/core-agent-browser .claude/skills/core-agent-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 "core-agent-browser" agent skill from https://github.com/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-browser into .claude/skills/core-agent-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-agent-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/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-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 NeverSight/learn-skills.dev --skill core-agent-browser -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install NeverSight/learn-skills.dev core-agent-browser --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeverSight/learn-skills.dev.git skills-src && mkdir -p .agents/skills && cp -r skills-src/data/skills-md/actionbook/rust-skills/core-agent-browser .agents/skills/core-agent-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 "core-agent-browser" agent skill from https://github.com/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-browser into .agents/skills/core-agent-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-agent-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 NeverSight/learn-skills.dev --skill core-agent-browser -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install NeverSight/learn-skills.dev core-agent-browser --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeverSight/learn-skills.dev.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/data/skills-md/actionbook/rust-skills/core-agent-browser .cursor/skills/core-agent-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 "core-agent-browser" agent skill from https://github.com/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-browser into .cursor/skills/core-agent-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-agent-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/NeverSight/learn-skills.dev.git --path data/skills-md/actionbook/rust-skills/core-agent-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 NeverSight/learn-skills.dev --skill core-agent-browser -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install NeverSight/learn-skills.dev core-agent-browser --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeverSight/learn-skills.dev.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/data/skills-md/actionbook/rust-skills/core-agent-browser .gemini/skills/core-agent-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 "core-agent-browser" agent skill from https://github.com/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-browser into .gemini/skills/core-agent-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-agent-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 NeverSight/learn-skills.dev core-agent-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 NeverSight/learn-skills.dev --skill core-agent-browser -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/NeverSight/learn-skills.dev.git skills-src && mkdir -p .github/skills && cp -r skills-src/data/skills-md/actionbook/rust-skills/core-agent-browser .github/skills/core-agent-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 "core-agent-browser" agent skill from https://github.com/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-browser into .github/skills/core-agent-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-agent-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 NeverSight/learn-skills.dev --skill core-agent-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 NeverSight/learn-skills.dev core-agent-browser --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeverSight/learn-skills.dev.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/data/skills-md/actionbook/rust-skills/core-agent-browser .opencode/skills/core-agent-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 "core-agent-browser" agent skill from https://github.com/NeverSight/learn-skills.dev/tree/main/data/skills-md/actionbook/rust-skills/core-agent-browser into .opencode/skills/core-agent-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "core-agent-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
core-agent-browser- GitHub stars
- 216
- Used in
- 1 other repo
- Token cost
- ~955 tokens
- SKILL.md length
- 119 words
- Files
- 13
- Skills in repo
- 43
- Repo updated
- First seen
- Licence
- None found
At a glance
Internal support skill for agent-browser CLI workflows used by rust-learner, docs-researcher, and crate-researcher.
- Works in 3 steps: rust-learner skill - Orchestrates… → actionbook MCP - Pre-computed selectors… → agent-browser CLI - Direct browser…
- Tasks that involve Browser automation
- SKILL.md covers Priority Note, Quick start, Core workflow and Commands, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Core Agent Browser is an agent skill from NeverSight/learn-skills.dev. Internal support skill for agent-browser CLI workflows used by rust-learner, docs-researcher, and crate-researcher. Use only when browser automation is explicitly required.
Its SKILL.md is about 960 tokens, which your agent loads only when the skill is triggered. The skill folder holds 12 other files (for example `stats.json`).
It sits in Productivity & Automation, covering Browser automation. It works with Rust. The repository describes itself as: Curated high-quality AI Agent Skills. Search, install, copy and share. Works with Claude Code, Cursor, OpenClaw, and other AI coding tools.
When your agent uses it
- Tasks that involve Browser automation
Example prompts
- “/core-agent-browser”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- rust-learner skill - Orchestrates actionbook + browser-fetcher
- actionbook MCP - Pre-computed selectors for known sites
- agent-browser CLI - Direct browser automation (last resort)
What it can do on your machine
Read from SKILL.md and the folder at commit 08f9d22. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Core Agent Browser loads about 955 tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 119 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 119 words (~955 tokens).
“For fetching Rust/crate information, use this priority order:”
- name
- core-agent-browser
- user-invocable
- false
- disable-model-invocation
- true
Files
SKILL.md and 12 other files in data/skills-md/actionbook/rust-skills/core-agent-browser of NeverSight/learn-skills.dev.
- SKILL.md
- description_ar.txt
- description_cn.txt
- description_de.txt
- description_en.txt
- description_es.txt
- description_fr.txt
- description_it.txt
- description_ja.txt
- description_ko.txt
- description_ru.txt
- description_tw.txt
- stats.json
Open the folder on GitHubat commit 08f9d22
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in NeverSight/learn-skills.dev, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Core 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Core Agent Browser this skillNeverSight/learn-skills.dev | 216 | 1 repos | ~955 | Automated safety check: Pass | None | |
| Gsd Browsergsd-build/gsd-browser | 267 | — | ~1.3k | Automated safety check: Pass | Apache-2.0 | |
| Gsd Browsergsd-build/gsd-browser | 267 | — | ~7.5k | Automated safety check: Pass | Apache-2.0 | |
| Horizon Browserpeters/horizon | 714 | — | ~3.6k | Automated safety check: Pass | MIT | |
| Chrome Automationappleweiping/WEIPING_WIKI | 119 | 1 repos | ~5.3k | Automated safety check: Warn | MIT | |
| Agent Browseraiskillstore/marketplace | 430 | 6 repos | ~1.4k | Automated safety check: Pass | None |
Similar skills
Gsd Browser
gsd-build/gsd-browser
Native Rust browser automation CLI for AI agents. An agent skill from gsd-build/gsd-browser.
Horizon Browser
peters/horizon
Control, inspect, or audit Horizon browser panels through public browser MCP tools.
Chrome Automation
appleweiping/WEIPING_WIKI
Connect to and control Google Chrome browser using agent-browser with CDP (Chrome DevTools Protocol).
Agent Browser
aiskillstore/marketplace
A fast Rust-based headless browser automation CLI with Node.js fallback that enables AI agents to navigate, click, type, and snapshot pages via structured commands.
Expect
yonatangross/orchestkit
Diff-aware AI browser testing — reads the git diff, maps changes to affected pages via the route map, generates a targeted test plan, and executes it via agent-browser (Rust daemon + CDP…
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Related
Works with
Categories
Questions about Core Agent Browser
What does Core Agent Browser do?
Internal support skill for agent-browser CLI workflows used by rust-learner, docs-researcher, and crate-researcher. dev. Internal support skill for agent-browser CLI workflows used by rust-learner, docs-researcher, and crate-researcher.
When should I use Core Agent Browser?
Core Agent Browser fits situations like: tasks that involve Browser automation.
How do I install Core Agent Browser in Claude Code?
Run `npx skills add NeverSight/learn-skills.dev --skill core-agent-browser -a claude-code`. Or copy the skill folder (data/skills-md/actionbook/rust-skills/core-agent-browser in NeverSight/learn-skills.dev) into .claude/skills/core-agent-browser in your project. Claude Code loads it when a task matches its description.
How do I install Core Agent Browser in Codex?
Run `npx skills add NeverSight/learn-skills.dev --skill core-agent-browser -a codex`. Or copy the skill folder (data/skills-md/actionbook/rust-skills/core-agent-browser in NeverSight/learn-skills.dev) into .agents/skills/core-agent-browser in your project. Codex loads it when a task matches its description.
Can I use Core 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 NeverSight/learn-skills.dev --skill core-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/core-agent-browser, .gemini/skills/core-agent-browser, .github/skills/core-agent-browser and .opencode/skills/core-agent-browser in your project.
What does Core Agent Browser need to run?
SKILL.md names no scripts, command-line tools or credentials: Core Agent Browser is instructions for the agent only.
Does Core Agent Browser access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Core Agent 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 Core Agent Browser use?
No licence was found for Core Agent Browser or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Core Agent Browser use?
About 955 tokens (SKILL.md is roughly 3.8k 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 Core Agent Browser?
Skills that share tags, products or a category with Core Agent Browser: Gsd Browser (gsd-build/gsd-browser, 267 stars), Gsd Browser (gsd-build/gsd-browser, 267 stars), Horizon Browser (peters/horizon, 714 stars) and Chrome Automation (appleweiping/WEIPING_WIKI, 119 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Core Agent Browser?
NeverSight (a GitHub organization) maintains it in NeverSight/learn-skills.dev, which has 216 GitHub stars. The repository holds 43 skills in this directory. The repository was last updated on October 6, 2026.
Source: NeverSight/learn-skills.dev on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.