Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add X-School-Academy/skill-pilot --skill agent-browsergit clone --depth 1 https://github.com/X-School-Academy/skill-pilotWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/x-school-academy/skill-pilot/agent-browser)<a href="https://agentmods.dev/skills/x-school-academy/skill-pilot/agent-browser"><img src="https://agentmods.dev/badge/skills/x-school-academy/skill-pilot/agent-browser/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/x-school-academy/skill-pilot/agent-browser"><img src="https://agentmods.dev/badge/skills/x-school-academy/skill-pilot/agent-browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00057 | $0.06880 |
| Opus 5.5 | $0.00023 | $0.02752 |
| Sonnet 5.5 | $0.00011 | $0.01376 |
| Haiku 4.5 | $0.00006 | $0.00688 |
Grade A, and why
agent-browser scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 16d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
75% identical to agent-browser — 507 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 719 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Browser Automation with agent-browser
The CLI uses Chrome/Chromium via CDP directly through the local wrapper script. Use core/bin/agent-browser for all commands in this skill.
Init Action
Use the init action before browser automation when core/bin/agent-browser may not be ready, Chrome may be missing, the environment connection method is unknown, or the user asks to initialize or verify browser automation.
Follow references/init.md for environment detection, Chrome connection setup, verification, and workflow output requirements. Follow references/troubleshooting.md for known browser setup and connection failures.
Core Workflow
Every browser automation follows this pattern:
- Navigate:
core/bin/agent-browser open <url> - Snapshot:
core/bin/agent-browser snapshot -i(get element refs like@e1,@e2) - Interact: Use refs to click, fill, select
- Re-snapshot: After navigation or DOM changes, get fresh refs
core/bin/agent-browser open https://example.com/form
core/bin/agent-browser snapshot -i
# Output: @e1 [input type="email"], @e2 [input type="password"], @e3 [button] "Submit"
core/bin/agent-browser fill @e1 "[email protected]"
core/bin/agent-browser fill @e2 "password123"
core/bin/agent-browser click @e3
core/bin/agent-browser wait --load networkidle
core/bin/agent-browser snapshot -i # Check result
Command Chaining
Commands can be chained with && in a single shell invocation. The browser persists between commands via a background daemon, so chaining is safe and more efficient than separate calls.
# Chain open + wait + snapshot in one call
core/bin/agent-browser open https://example.com && core/bin/agent-browser wait --load networkidle && core/bin/agent-browser snapshot -i
# Chain multiple interactions
core/bin/agent-browser fill @e1 "[email protected]" && core/bin/agent-browser fill @e2 "password123" && core/bin/agent-browser click @e3
# Navigate and capture
core/bin/agent-browser open https://example.com && core/bin/agent-browser wait --load networkidle && core/bin/agent-browser screenshot page.png
What ships with it
17 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- LICENSE 11 KB
- references/authentication.md 8.5 KB
- references/commands.md 12 KB
- references/init-linux-gui.md 733 B
- references/init-linux-no-gui.md 2.0 KB
- references/init-macos.md 715 B
- references/init-windows-wsl.md 1.4 KB
- references/init.md 3.3 KB
- references/profiling.md 3.5 KB
- references/proxy-support.md 5.0 KB
- references/session-management.md 4.6 KB
- references/snapshot-refs.md 5.5 KB
- references/troubleshooting.md 936 B
- references/video-recording.md 3.9 KB
- templates/authenticated-session.sh 3.8 KB runs code
- templates/capture-workflow.sh 1.9 KB runs code
- templates/form-automation.sh 2.0 KB runs code
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 16d ago First seen · 719 lines · 57 tokens per session scan A f4a49972bf74
agent-browser is a skill published in the GitHub repository X-School-Academy/skill-pilot (20 stars, last pushed 4mo ago), licensed MIT. It adds 57 tokens to every session and 6,880 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 75% identical to agent-browser, differing in 507 lines, and is treated as a copy.
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