hep-browser

hep-browser is a command for Claude Code from agentlas-ai/Agentlas-OS. It costs 12 tokens per session (1,802 once invoked), scanned A, original, Apache-2.0.

A browser command for viewing rendered web pages and carrying out browser actions such as clicks and form interactions.

In plain words
What is it for?
Use it to inspect pages, click elements, submit forms, and capture browser snapshots.
Why use it?
It handles work that needs a real browser, including JavaScript-heavy pages and logged-in browser state.

Command for Claude Code

Installs and runs on its own, but its text points at files inside the plugin that ships it — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed.

About the project

Agentlas OS is a local-first system for creating, storing, borrowing, and running specialist AI agents and temporary agent teams through supported hosts and models. It serves people who want reusable agents that remain available across computers and model workspaces, and the catalogue contains its skills, commands, hooks, agents, instructions, plugin, and rule.

agentlas-ai/Agentlas-OS · 1,101 stars · on GitHub

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.

agentmods
npx agentmods add commands/agentlas-ai/agentlas-os/hep-browser
Clone the repo
git clone --depth 1 https://github.com/agentlas-ai/Agentlas-OS

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 hep-browser

README.md
[![agentmods](https://agentmods.dev/badge/commands/agentlas-ai/agentlas-os/hep-browser.svg)](https://agentmods.dev/commands/agentlas-ai/agentlas-os/hep-browser)
Your own site
<a href="https://agentmods.dev/commands/agentlas-ai/agentlas-os/hep-browser"><img src="https://agentmods.dev/badge/commands/agentlas-ai/agentlas-os/hep-browser.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,802 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00012 $0.01802
Opus 5 $0.00006 $0.00901
Sonnet 5 $0.00002 $0.00360
Haiku 4.5 $0.00001 $0.00180

Measured 5d ago against content hash a00424634b25, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

hep-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 5d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/commands/hep-browser.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Update fallback: 자동 업데이트가 안 되면 hephaestus update를 한 번 실행하세요. 업데이트하지 않아도 현재 버전 명령은 그대로 동작합니다.

/hep-browser

Use this when the task needs a real browser, page rendering, login-visible state, click/form behavior, or JS-heavy evidence. Prefer the Agentlas browser hardpoint first; do not route browser work through generic research commands unless this command reports that the hardpoint is unavailable.

Behavior:

  • /hep-browser <url> reads a rendered browser snapshot.
  • /hep-browser <url> "<instruction>" or /hep-browser <url> --act "<instruction>" performs browser automation through browser.agent_cli, then captures a snapshot.
  • If the Agentlas Browser CDP port is already live, the command attaches to it by default so logged-in Desktop/browser state is reused.
  • Prefer the human-facing URL a person would type over app-shell automation URLs. For example, use https://mail.google.com/ instead of https://mail.google.com/mail/u/0/#inbox unless that exact deep route is required. Add --raw-url to preserve the exact URL.
  • /hep-browser <url> --click @e1 clicks an explicit snapshot ref.
  • /hep-browser <url> --click-text "Compose" clicks visible text without an LLM provider.
  • Add --wait-ms 2000 when a dynamic app opens dialogs after a short delay.
  • Add --read to force snapshot-only mode when extra text is context rather than an action.
  • Pass --cdp, --profile, --auto-connect, or --headed only when the user needs an existing Desktop/browser session or a specific browser launch mode.

Raw arguments: $ARGUMENTS

Run

RUNNER=""
for candidate in \
  "$HOME/.agentlas/runtime/current/bin/hephaestus" \
  "${CLAUDE_PLUGIN_ROOT:+$CLAUDE_PLUGIN_ROOT/bin/hephaestus}" \
  "${PLUGIN_ROOT:+$PLUGIN_ROOT/bin/hephaestus}" \
  "${GEMINI_EXTENSION_ROOT:+$GEMINI_EXTENSION_ROOT/bin/hephaestus}" \
  "./bin/hephaestus"
do
  if [ -n "$candidate" ] && [ -x "$candidate" ]; then RUNNER="$candidate"; break; fi
done
[ -n "$RUNNER" ] || { echo "Hephaestus runtime not found. Run the installer first." >&2; exit 1; }
"$RUNNER" hep-browser "$ARGUMENTS"

Read the full file on GitHub · 103 lines

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. 5d ago First seen · 103 lines · 12 tokens per session scan A a00424634b25

Subscribe to this mod's changes

hep-browser is a command published in the GitHub repository agentlas-ai/Agentlas-OS (1,101 stars, last pushed 2d ago), licensed Apache-2.0. It adds 12 tokens to every session and 1,802 once invoked, about $0.0001 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.