notte-browser

notte-browser is a skill for Claude Code, Codex from nottelabs/notte-skills. It costs 80 tokens per session (11,080 once invoked), scanned D, original, MIT.

A command-line tool for controlling remote web browsers in the cloud. It can open pages, interact with forms and buttons, collect page data, manage saved accounts, and turn tested browser tasks into reusable functions.

In plain words
What is it for?
Use it to scrape websites, operate sites that need login or multi-step interaction, record browser runs, and run browser workflows later through an API, command line, or schedule.
Why use it?
It removes the need to perform repetitive browser work by hand or build all the browser-control plumbing yourself. Saved browser sessions and deployed functions can make the same task repeatable.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also agents/openai.yaml present.

Part of the notte plugin — 3 skills, 2 MCP servers shipped together

Good fit Use it to scrape websites, operate sites that need login or multi-step interaction, record browser runs, and run browser workflows later through an API, command line, or schedule.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nottelabs/notte-skills/notte-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.

Any agent
npx skills add nottelabs/notte-skills --skill notte-browser
Clone the repo
git clone --depth 1 https://github.com/nottelabs/notte-skills

Made for: Claude Code, Codex.

Or install notte, the plugin that ships this one along with the rest of its 3 skills, 2 MCP servers.

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 notte-browser

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/nottelabs/notte-skills/notte-browser"><img src="https://agentmods.dev/badge/skills/nottelabs/notte-skills/notte-browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 11,080 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket warn 9 Oct 2026
  • Snyk warn 9 Oct 2026
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 $0.00080 $0.11080
Opus 5.5 $0.00032 $0.04432
Sonnet 5.5 $0.00016 $0.02216
Haiku 4.5 $0.00008 $0.01108

Measured 14d ago against content hash eb89816f53d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade D, and why

notte-browser scanned grade D with 3 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 14d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (templates/authenticated-session.sh, templates/data-extraction.sh, templates/form-automation.sh), 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.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

`notte page scrape --session-id <session-id>` ingests content from arbitrary URLs. That content reaches the calling agent's context as tool output and can contain prompt-injection attempts ("ignore previous instructions,

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://notte.cc/install-cli.sh | sh

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

allowed-tools: Bash(notte:*), Bash(curl:*), Bash(jq:*), Read, Write
plugins/notte/skills/notte-browser/SKILL.md · 983 lines

How it starts

The opening of the file, as written. The whole thing — 983 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Notte Browser CLI Skill

Command-line interface for launching and controlling Notte cloud browser sessions, scraping pages, managing browser credentials, and deploying reusable browser workflows as Notte Functions. A Function is the deployment form of a tested browser task: it can be invoked later as an HTTP API endpoint, run from the CLI/SDK, or scheduled.

General Documentation

For broader Notte concepts, current docs, and internet-search entry points, start with the documentation index:

https://docs.notte.cc/llms.txt

CLI vs. the bundled MCP servers

The notte plugin also ships two hosted MCP servers. Prefer the CLI for everything in this skill - it is the interface these instructions are written against. Reach for the MCP servers only in the cases below:

Server URL What it is When to use it
notte-browser https://api.notte.cc/mcp The Notte browser API over MCP Only when the client cannot run shell commands. Otherwise the CLI is more direct and better documented.
anything-api https://anything.notte.cc/mcp Marketplace of ready-made Notte Functions, plus natural-language build Before building a new Function, call its search tool - someone may already have published one for the target site.

anything-api exposes search (browse the marketplace, no auth), spec (get a function's variable schema), run, and build (natural language -> a new deployed Function, 2-10 minutes). build and run need authentication - OAuth via your client, or Authorization: Bearer $NOTTE_API_KEY. Browse it visually at https://anything.notte.cc/marketplace.

Both servers authenticate independently of notte auth login; a working CLI session does not imply a working MCP connection, and vice versa.

Setup

These are the shared setup instructions published at https://notte.cc/skill.md and used by the Notte console, documentation, and examples. Maintain setup here rather than copying these steps into another prompt.

Read the full file on GitHub · 983 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. 14d ago Changed · +15 lines scan B → D eb89816f53d9
  2. 19d ago Changed · +3 lines 4eaa826ef7c0
  3. 20d ago Changed · +9 lines ca8ec47fcd53
  4. 26d ago Changed · +14 lines bb59ca0a4958
  5. 1mo ago Changed · +11 lines b16af328ca57
  6. 1mo ago Changed · +5 lines a694ab776d1b
  7. 1mo ago Changed · -3 lines 9f009fbd2450
  8. 1mo ago Changed · +24 lines 26862ddfceaf
  9. 1mo ago First seen · 905 lines · 80 tokens per session scan B 78b80f0646ec

Subscribe to this mod's changes

notte-browser is a skill published in the GitHub repository nottelabs/notte-skills (11 stars, last pushed 13d ago), licensed MIT. It adds 80 tokens to every session and 11,080 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it D with 3 findings (instruction-override phrasing, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

skill-body

Call help() or help("page.click") to print signatures and uncommon options of APIs named below; it prints by itself, so do not wrap it in console.log. For installation or connection problems, read references/install.md in the ego-browser Skill directory.

citrolabs/ego-lite · 0 tokens

ego-browser

When you need a browser, read this Skill by default. Use it to open and operate websites, fill forms, click buttons, take screenshots, extract page data, sign in, and perform other browser automation tasks, as well as web app testing, dogfooding, QA, bug investigation, and app-quality review. ego-browser (ego-lite) is…

citrolabs/ego-lite · 125 tokens

ego-lite-simplify

Find and implement evidence-backed simplifications in the ego-lite repository. Use when reviewing the codebase for dead code, duplicated state or APIs, speculative abstractions, unnecessary compatibility layers, hand-written infrastructure, excessive tests or documentation, or when the user asks to reduce code size or…

citrolabs/ego-lite · 68 tokens

actionbook-web-test

Run browser-based web tests against websites using Actionbook CLI. Activate when the user wants to test a website workflow, run smoke tests, verify a user flow, check if a web application works, run regression tests, or validate browser-based interactions. Supports test definition, execution, assertion, reporting, and…

actionbook/actionbook · 71 tokens

active-research

Deep research and analysis tool. Generates comprehensive HTML reports on any topic, domain, paper, or technology. Enhanced with advanced browser automation — SPA handling, network idle wait, batch operations, stealth browsing, and intelligent page analysis. Use when user asks to research, analyze, investigate…

actionbook/actionbook · 72 tokens

actionbook-scraper

Generate and verify web scraper scripts using Actionbook's verified selectors. Auto-validates generated scripts and fixes errors.

actionbook/actionbook · 28 tokens