browse

browse is a skill for Claude Code from timurgaleev/vibestack. It costs 26 tokens per session (7,794 once invoked), scanned A, original, MIT.

A headless-browser testing skill for checking websites without displaying a normal browser window. It can navigate pages, interact with controls, inspect results, compare states, and capture screenshots.

In plain words
What is it for?
Use it to test deployments, forms, uploads, dialogs, responsive layouts, and element states, or to collect screenshots and evidence for bugs.
Why use it?
It lets developers verify real user flows and page behavior with repeatable browser checks.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Good fit Use it to test deployments, forms, uploads, dialogs, responsive layouts, and element states, or to collect screenshots and evidence for bugs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/timurgaleev/vibestack/browse
Install

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.

Any agent
npx skills add timurgaleev/vibestack --skill browse
Clone the repo
git clone --depth 1 https://github.com/timurgaleev/vibestack

Made for: Claude Code.

Wrote 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.

agentmods badge for browse

README.md
[![agentmods](https://agentmods.dev/badge/skills/timurgaleev/vibestack/browse/github.svg)](https://agentmods.dev/skills/timurgaleev/vibestack/browse)
Your own site
<a href="https://agentmods.dev/skills/timurgaleev/vibestack/browse"><img src="https://agentmods.dev/badge/skills/timurgaleev/vibestack/browse/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.

agentmods 80×15 button for browse

Your own site · 80×15
<a href="https://agentmods.dev/skills/timurgaleev/vibestack/browse"><img src="https://agentmods.dev/badge/skills/timurgaleev/vibestack/browse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,794 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 69
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Memory Poisoning · line 425
    Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
    Fix: Implement context-window management that detects and rejects padding or stuffing attempts. Prioritize system instructions over user-injected content.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00026 $0.07794
Opus 5.5 $0.00010 $0.03118
Sonnet 5.5 $0.00005 $0.01559
Haiku 4.5 $0.00003 $0.00779

Measured 16d ago against content hash bac1c3ce59f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

browse 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 16d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (runtime/vibe-browse-daemon.mjs, runtime/vibe-browse.mjs, runtime/vibe-stealth.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

declined — say which piece is missing, then fall back to text-only QA (curl
skills/browse/SKILL.md · 578 lines

How it starts

The opening of the file, as written. The whole thing — 578 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to invoke

Use when you need to test a feature, verify a deployment, dogfood a user flow, or file a bug with evidence. Use when asked to "open in browser", "test the site", "take a screenshot", or "dogfood this".

Preamble

eval "$("${VIBESTACK_HOME:-$HOME/.vibestack}/bin/vibe-slug" 2>/dev/null)" 2>/dev/null || SLUG="unknown"
_LEARN_FILE="${VIBESTACK_HOME:-$HOME/.vibestack}/projects/${SLUG:-unknown}/learnings.jsonl"
if [ -f "$_LEARN_FILE" ]; then
  _LEARN_COUNT=$(wc -l < "$_LEARN_FILE" 2>/dev/null | tr -d ' ')
  echo "LEARNINGS: $_LEARN_COUNT entries loaded"
  if [ "$_LEARN_COUNT" -gt 5 ] 2>/dev/null; then
    "${VIBESTACK_HOME:-$HOME/.vibestack}/bin/vibe-learnings-search" --limit 5 2>/dev/null || true
  fi
else
  echo "LEARNINGS: none yet"
fi

{{include lib/snippets/session-host.md}}

{{include lib/snippets/decision-brief.md}}

{{include lib/snippets/working-protocols.md}}

{{include lib/snippets/state-protocols.md}}

browse: QA Testing & Dogfooding

Persistent headless Chromium. First call auto-starts (~3s), then ~100ms per command. State persists between calls (cookies, tabs, login sessions).

SETUP (run this check BEFORE any browse command)

B="${CLAUDE_SKILL_DIR:-$HOME/.claude/skills/browse}/bin/vibe-browse"
[ -x "$B" ] || B="$(command -v vibe-browse || true)"
if [ -n "$B" ] && [ -x "$B" ] && [ "$("$B" status 2>/dev/null)" != "BROWSE_NOT_AVAILABLE" ]; then
  echo "READY: $B"
  echo "BROWSE_BIN: $B"
else
  echo "NEEDS_SETUP"
fi

Every Bash call starts a fresh shell, so $B is unset in every later block. A block that runs a browse command starts with B='<BROWSE_BIN>': replace <BROWSE_BIN> with the path printed on the BROWSE_BIN: line.

vibe-browse is a launcher, not the browser itself. With the checkout's dependencies installed it runs the full daemon this file documents; without them it falls back to a stateless shim that covers navigation, capture and chain but answers NOT_SUPPORTED:<verb> to the interaction and inspection verbs. Read that answer as a missing capability rather than a transient failure: name the verb that was unavailable instead of retrying it or describing output you never got.

Read the full file on GitHub · 578 lines

Files

What ships with it

5 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.

Changes

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.

  1. 16d ago Changed · +25 lines · -34 tokens per session bac1c3ce59f6
  2. 17d ago Changed · +37 lines b0696f0ae55f
  3. 1mo ago Changed · +52 lines 73201c875fef
  4. 1mo ago First seen · 464 lines · 60 tokens per session scan A 8a785e4bd187

Subscribe to this mod's changes

browse is a skill published in the GitHub repository timurgaleev/vibestack (7 stars, last pushed 10d ago), licensed MIT. It adds 26 tokens to every session and 7,794 once invoked, about $0.0001 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 2026-08-31.

Related

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