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001-camofox-core

001-camofox-core is a cursor rule for Cursor from redf0x1/camofox-browser. It costs 446 tokens per session, scanned A, original, MIT.

A set of rules for using CamoFox Browser, an anti-detection browser automation server. It defines how to open tabs, capture page snapshots, use temporary element references, manage sessions, and call the server API.

In plain words
What is it for?
Use it to automate browser tabs through the REST API or command-line wrapper, interact from fresh snapshots, check server status, and clean up sessions.
Why use it?
It prevents unreliable automation caused by stale page references, inconsistent sessions, or missing cleanup after navigation and interface changes.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: built for openclaw.

not rated 434repo +7 6d ago A scan 446 tokens original MIT

Good fit Use it to automate browser tabs through the REST API or command-line wrapper, interact from fresh snapshots, check server status, and clean up sessions.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/redf0x1/camofox-browser/001-camofox-core
View source ↗ redf0x1/camofox-browser
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.

Clone the repo
git clone --depth 1 https://github.com/redf0x1/camofox-browser

Made for: Cursor.

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 001-camofox-core

README.md
[![agentmods](https://agentmods.dev/badge/rules/redf0x1/camofox-browser/001-camofox-core/github.svg)](https://agentmods.dev/rules/redf0x1/camofox-browser/001-camofox-core)
Your own site
<a href="https://agentmods.dev/rules/redf0x1/camofox-browser/001-camofox-core"><img src="https://agentmods.dev/badge/rules/redf0x1/camofox-browser/001-camofox-core/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 001-camofox-core

Your own site · 80×15
<a href="https://agentmods.dev/rules/redf0x1/camofox-browser/001-camofox-core"><img src="https://agentmods.dev/badge/rules/redf0x1/camofox-browser/001-camofox-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 446 This file is loaded in full into every session.
When invoked 446 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00446 $0.00446
Opus 5.5 $0.00178 $0.00178
Sonnet 5.5 $0.00089 $0.00089
Haiku 4.5 $0.00045 $0.00045

Measured 2mo ago against content hash 18d777509e07, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

001-camofox-core 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.

.cursor/rules/001-camofox-core.mdc · 53 lines

What it actually says

CamoFox Core Rules

What CamoFox Is

  • CamoFox Browser is an anti-detection browser automation server built on Camoufox.
  • Primary interface is REST API on port 9377 with CLI wrapper camofox.
  • OpenClaw-compatible routes are available (/tabs/open, /navigate, /snapshot, /act).

Snapshot-First Workflow (Required)

  1. Open/create a tab.
  2. Capture snapshot to get current eN refs.
  3. Interact using refs when possible.
  4. Re-snapshot after navigation or major UI updates.

Never assume old refs remain valid after:

  • navigation
  • modal transitions
  • SPA rerenders
  • display mode toggles

Element Refs (eN) Rules

  • Refs are produced by snapshot endpoints and are user/tab scoped.
  • Refs are preferred over selectors for robust automation.
  • Treat refs as ephemeral state, not permanent IDs.

User/Session Rules

  • Always keep userId consistent through a flow.
  • sessionKey (or legacy listItemId) groups tabs by task.
  • DELETE /sessions/:userId is the full cleanup operation.

Server Basics

  • Health check: GET /health.
  • Presets list: GET /presets.
  • Context display toggle: POST /sessions/:userId/toggle-display.

Critical Safety Rules

  • If CAMOFOX_API_KEY is configured, provide Bearer auth for protected routes.
  • OpenClaw POST /stop always requires x-admin-key, and it must match configured admin key value.
  • Use --format json for machine parsing.

Quick Reference

camofox open https://example.com         # create tab
camofox snapshot                         # get refs
camofox click e5                         # interact by ref
camofox type e8 "hello"                  # type text
camofox get-url --format json            # structured output
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. 2mo ago First seen · 53 lines · 446 tokens per session scan A 18d777509e07

Subscribe to this mod's changes

001-camofox-core is a cursor rule published in the GitHub repository redf0x1/camofox-browser (434 stars, last pushed 6d ago), licensed MIT. It adds 446 tokens to every session, about $0.0018 per session on Opus 5.5. 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.

Browser automationai-agentanti-detectionautomationbot-detectionbrowser-automationbrowser-server
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