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/aloth/powerskills/browsernpx skills add aloth/PowerSkills --skill browsergit clone --depth 1 https://github.com/aloth/PowerSkillsWhat 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 | $0.00080 | $0.00715 |
| Opus 5 | $0.00040 | $0.00358 |
| Sonnet 5 | $0.00016 | $0.00143 |
| Haiku 4.5 | $0.00008 | $0.00072 |
Grade A, and why
powerskills-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.
How it starts
The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PowerSkills — Browser
Edge browser automation via CDP (Chrome DevTools Protocol).
Requirements
- Microsoft Edge running with remote debugging:
Start-Process "msedge" -ArgumentList "--remote-debugging-port=9222" - Default port configurable in
config.json(edge_debug_port)
Actions
.\powerskills.ps1 browser <action> [--params]
| Action | Params | Description |
|---|---|---|
tabs |
List open browser tabs | |
navigate |
--url URL |
Navigate to URL |
screenshot |
--out-file path.png [--target-id id] |
Capture page as PNG |
content |
[--target-id id] |
Get page text content |
html |
[--target-id id] |
Get full page HTML |
evaluate |
--expression "js" |
Execute JavaScript expression |
click |
--selector "#btn" |
Click element by CSS selector |
type |
--selector "#input" --text "hello" |
Type into element |
new-tab |
--url URL |
Open new tab |
close-tab |
--target-id id |
Close tab by ID |
scroll |
--scroll-target top|bottom|selector |
Scroll page |
fill |
--fields-json '[{"selector":"#a","value":"b"}]' |
Fill multiple form fields |
wait |
--seconds N |
Wait N seconds (default: 3) |
Examples
# List open tabs
.\powerskills.ps1 browser tabs
# Navigate and screenshot
.\powerskills.ps1 browser navigate --url "https://example.com"
.\powerskills.ps1 browser screenshot --out-file page.png
# Extract page text
.\powerskills.ps1 browser content
# Run JavaScript
.\powerskills.ps1 browser evaluate --expression "document.title"
# Fill a login form
.\powerskills.ps1 browser fill --fields-json '[{"selector":"#user","value":"alex"},{"selector":"#pass","value":"secret","submit":"#login"}]'
Multi-Tab Support
Pass --target-id (from tabs output) to operate on a specific tab. Without it, actions target the first page.
Fill Fields Format
JSON array of objects with selector, value, and optional submit:
What ships with it
1 file 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.
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 · 81 lines · 80 tokens per session scan A ac34fcbc7880
powerskills-browser is a skill published in the GitHub repository aloth/PowerSkills (35 stars, last pushed 1mo ago), licensed MIT. It adds 80 tokens to every session and 715 once invoked, about $0.0004 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 2026-08-30.
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