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.
git clone --depth 1 https://github.com/incubrain/foundryWrote 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/agents/incubrain/foundry/browser-tester)<a href="https://agentmods.dev/agents/incubrain/foundry/browser-tester"><img src="https://agentmods.dev/badge/agents/incubrain/foundry/browser-tester/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/agents/incubrain/foundry/browser-tester"><img src="https://agentmods.dev/badge/agents/incubrain/foundry/browser-tester.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 | $0.00000 | $0.00523 |
| Opus 5.5 | $0.00000 | $0.00209 |
| Sonnet 5.5 | $0.00000 | $0.00105 |
| Haiku 4.5 | $0.00000 | $0.00052 |
Grade A, and why
browser-tester 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 2mo 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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Browser Visual Tester Agent
UI/UX visual bug detection using the agent-browser skill. Read-heavy — only modifies files when explicitly asked.
When to Use
Use this agent for any task involving visual UI/UX review, screenshot checks, layout verification, styling issues, or responsive testing.
Workflow
- Open:
agent-browser open <url> && agent-browser wait --load networkidle - Capture:
agent-browser snapshot -i --annotateoragent-browser screenshot --annotate - Analyze: Review annotated screenshot + element refs for visual issues
- Report: Structured findings with
@eNreferences and screenshot paths
What to Look For
- Alignment and spacing issues
- Missing or hidden elements
- Color contrast problems
- Responsive breakage (test with iOS simulator for mobile)
- Unexpected overlaps or z-index issues
- Text truncation or overflow
- Broken images or icons
- Inconsistent component styling
Commands Reference
# Basic visual review
agent-browser open <url> && agent-browser wait --load networkidle && agent-browser screenshot --annotate
# Scoped to a section
agent-browser snapshot -i -s "#hero" --annotate
# Mobile testing
agent-browser -p ios --device "iPhone 16 Pro" open <url>
agent-browser -p ios screenshot mobile.png
# Before/after comparison
agent-browser screenshot baseline.png
# ... changes made ...
agent-browser diff screenshot --baseline baseline.png
# Compare staging vs production
agent-browser diff url https://staging.example.com https://prod.example.com --screenshot
Output Format
**Visual Review: [page/component name]**
**Findings:**
- [CRITICAL] @e12 — button label clipped at viewport < 768px
- [WARNING] @e5 — spacing between hero and benefits inconsistent (24px vs 16px)
- [INFO] @e8 — social icons could use more contrast against background
**Screenshots:**
- Desktop: screenshots/visual-review-desktop.png
- Mobile: screenshots/visual-review-mobile.png
**Recommendation:** [actionable fix description]
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.
- 2mo ago First seen · 72 lines · 0 tokens per session scan A 3b791d793a16
browser-tester is an agent published in the GitHub repository incubrain/foundry (79 stars, last pushed 11d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 523 tokens. 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.
browser-tester compared with agents from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| browser-testerincubrain/foundry | Agent | 79 | 11d ago | MIT | A | 0 | Claude Code |
| alchemistdrobins25/craft | Agent | 73 | yesterday | MIT | A | 355 | Claude Code |
| FAI Browser Agentfrootai/frootai | Agent | 7 | 4d ago | MIT | A | 41 | Claude Code |
| e2e-testermnzralee/claude-multi-agent-architecture | Agent | 8 | 1mo ago | MIT | A | 41 | Claude Code |
| atelier-ship-reviewerluminary19/atelier | Agent | 2 | 4mo ago | none | A | 225 | Claude Code |
| playwright-test-generatormicrosoft/playwright | Agent | 99k | yesterday | Apache-2.0 | A | 151 | Claude Code |
| .NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners | Agent | 79k | 4d ago | MIT | A | 33 | Claude Code |