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 agentmods add skills/klimentij/klimkit/agent-browsernpx skills add klimentij/klimkit --skill agent-browsergit clone --depth 1 https://github.com/klimentij/klimkitWhat 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 | $0.00052 | $0.00366 |
| Opus 5 | $0.00026 | $0.00183 |
| Sonnet 5 | $0.00010 | $0.00073 |
| Haiku 4.5 | $0.00005 | $0.00037 |
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 2d 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.
What it actually says
Agent Browser
Browser automation CLI for AI agents. Uses Chrome/Chromium via CDP directly.
Install: npm i -g agent-browser && agent-browser install
Loading Skills
You must run agent-browser skills get <name> before running any agent-browser commands.
This file does not contain command syntax, flags, or workflows. That content is served
by the CLI and changes between versions. Guessing at commands without loading the skill
will produce incorrect or outdated invocations.
agent-browser skills get agent-browser # Required before any browser automation
agent-browser skills get <name> --full # Include references and templates
Available Skills
- agent-browser — Core browser automation
- dogfood — Exploratory testing and QA
- electron — Electron desktop app automation
- slack — Slack workspace automation
- vercel-sandbox — Browser automation in Vercel Sandbox
- agentcore — Browser automation on AWS Bedrock AgentCore
Why agent-browser
- Fast native Rust CLI, not a Node.js wrapper
- Works with any AI agent (Cursor, Claude Code, Codex, Continue, Windsurf, etc.)
- Chrome/Chromium via CDP with no Playwright or Puppeteer dependency
- Accessibility-tree snapshots with element refs for reliable interaction
- Sessions, authentication vault, state persistence, video recording
- Specialized skills for Electron apps, Slack, exploratory testing, cloud providers
What ships with it
11 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.
- agents/openai.yaml 191 B
- references/authentication.md 8.2 KB
- references/commands.md 11 KB
- references/profiling.md 3.3 KB
- references/proxy-support.md 4.9 KB
- references/session-management.md 4.2 KB
- references/snapshot-refs.md 5.3 KB
- references/video-recording.md 3.5 KB
- templates/authenticated-session.sh 3.6 KB runs code
- templates/capture-workflow.sh 1.8 KB runs code
- templates/form-automation.sh 1.8 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.
- 2d ago First seen · 41 lines · 52 tokens per session scan A d84c591b4186
agent-browser is a skill published in the GitHub repository klimentij/klimkit (7 stars, last pushed 23d ago), licensed MIT. It adds 52 tokens to every session and 366 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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