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 krzysztofsurdy/code-virtuoso --skill web-screenshotgit clone --depth 1 https://github.com/krzysztofsurdy/code-virtuosoWrote 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/krzysztofsurdy/code-virtuoso/web-screenshot)<a href="https://agentmods.dev/skills/krzysztofsurdy/code-virtuoso/web-screenshot"><img src="https://agentmods.dev/badge/skills/krzysztofsurdy/code-virtuoso/web-screenshot/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/krzysztofsurdy/code-virtuoso/web-screenshot"><img src="https://agentmods.dev/badge/skills/krzysztofsurdy/code-virtuoso/web-screenshot.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 | $0.00068 | $0.06868 |
| Opus 5.5 | $0.00027 | $0.02747 |
| Sonnet 5.5 | $0.00014 | $0.01374 |
| Haiku 4.5 | $0.00007 | $0.00687 |
Grade A, and why
web-screenshot scanned grade A with 1 finding 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 3d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- [ ] **Preflight the URL with a text fetch first** (reachable, no auth wall or geoblock). A quick `WebFetch` or `curl` confirms the URL returns real content (status 200, expected title, body word count). Opening a brows How it starts
The opening of the file, as written. The whole thing — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Screenshot
Take reliable screenshots of web pages. Pick the lightest tool that does the job, and never install dependencies the environment did not ask for.
Tool selection cascade
Two cascades apply: one for picking the capture tool, one for escalating around a bot wall. They are separate decisions.
Cascade A: picking the capture tool (no bot wall in sight)
Before any capture, check what is available in the environment and pick the lightest viable tool:
| # | Tool | Detect with | Best for | Limits |
|---|---|---|---|---|
| 1 | Browser-extension MCP connected to the user's real browser (e.g. Claude in Chrome, tools like mcp__claude-in-chrome__*) |
Check the MCP tool list for browser-extension tools and that the connection is live | Logged-in pages, bot-walled sites (it is a real browser), flows recorded as GIF, viewport and region shots, no install | Needs the extension installed and connected; uses the user's own session, so cookies and logged-in state are visible; viewport-only (no stitched full page); visible window; not for batch, CI, or clean anonymous captures. See references/browser-extension.md |
| 2 | Browser MCP (headless, e.g. mcp__*__browser_take_screenshot) |
Already loaded in this session - check the MCP tool list | Single ad-hoc shot, no install, full-page and element shots, navigation flows, clean anonymous session | Often runs in docker with a datacenter IP - bot walls block this; output path may be inside the MCP container |
| 3 | shot-scraper (CLI) | which shot-scraper |
Repeated captures, batch YAML, multi-viewport, scripted automation, CI jobs | Headless by default - some bot walls fire only on headless; requires pip install shot-scraper && shot-scraper install once |
| 4 | Playwright (Python or Node) | python -c "import playwright" 2>/dev/null |
Multi-step flows, headed mode with stealth, anti-bot escalation (see Cascade B Tier 1) | Library-level; more code per shot |
| 5 | Ask user before installing | None of the above present | Long-term tooling decisions | Never install silently |
What ships with it
9 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.
- references/browser-extension.md 7.6 KB
- references/options.md 5.8 KB
- references/platform-selectors.md 6.8 KB
- references/wait-strategies.md 4.8 KB
- scripts/capture_via_system_browser.sh 5.1 KB runs code
- scripts/capture_with_stealth.py 6.5 KB runs code
- scripts/connect_to_running_chrome.py 4.3 KB runs code
- scripts/copy_mcp_capture_to_host.sh 2.7 KB runs code
- scripts/multi_viewport.py 2.1 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.
- 3d ago Changed · +15 lines · +9 tokens per session 9b2e544a5a4d
- 4d ago Changed · +1 lines · -59 tokens per session b08060bf6059
- 1mo ago First seen · 485 lines · 118 tokens per session scan A bd6134326802
web-screenshot is a skill published in the GitHub repository krzysztofsurdy/code-virtuoso (36 stars, last pushed 3d ago), licensed MIT. It adds 68 tokens to every session and 6,868 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
browser-harness-authoring
Use when mapping a repeatable website workflow into a verified Hermes skill so later runs can follow known steps instead of rediscovering the site. Surveys browser compatibility, semantic targets, failure modes, recovery paths, decision gates, and expiry using dummy data and no irreversible submissions.
reddit-browse-and-post
Let an agent read Reddit by default, and publish only after the user explicitly opts in and approves the exact post. Everything here is account-agnostic: the user supplies credentials through environment variables or a browser login, never through chat.
cross-browser-typography-qa
Use this skill when web text looks clipped, flattened, wrapped incorrectly, misaligned, or materially different between Chromium and WebKit/Safari. Treat text rendering as both a geometry problem and a visual paint problem: passing DOM bounds does not prove that every glyph is intact.
dogfood
This skill guides you through systematic exploratory QA testing of web applications using the browser toolset. You will navigate the application, interact with elements, capture evidence of issues, and produce a structured bug report.
dynamic-content-extraction
Extract structured data (prices, listings, product details) from JavaScript-heavy sites where key data is rendered by React/Vue/Angular and doesn't appear in compact accessibility snapshots.
macos-app-automation
Use this skill when the user asks whether Hermes can control a native macOS app, or asks you to verify, configure, or troubleshoot AppleScript/Automation access for an app.