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Real-browser automation agent powered by Notte — navigates JS-rendered pages, fills forms, solves captchas, and uses proxies.

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Code

Create notte-browser-agent.py with the code below, or save it directly from your editor. 
"""Notte Browser Agent (Bindu example).

Wraps the Notte SDK's built-in Agent + Session as a Bindu microservice.
Notte provides the browser runtime (cloud Chromium, stealth, captcha solving,
proxies, Vault-backed auth) and the agent loop that turns a natural-language
task into structured Pydantic output. `bindufy(...)` exposes that as a
Bindu-native agent with DID identity, A2A protocol, and skill routing.

Unlike most Bindu examples, there is no separate "LLM + tools" layer here —
Notte IS the agent. The handler simply forwards the user message to
`client.Agent(...).run(task=...)`.

Usage:
    python notte_browser_agent.py

Environment:
    Requires NOTTE_API_KEY in .env (https://console.notte.cc to obtain one).

Docs:
    - Notte SDK:            https://github.com/nottelabs/notte
    - Notte docs:           https://docs.notte.cc
    - Agent Skill (Claude): https://github.com/nottelabs/agent-skill-notte
"""

import os

from dotenv import load_dotenv

load_dotenv()

from bindu.penguin.bindufy import bindufy
from notte_sdk import NotteClient

# A single, long-lived Notte client. Session lifetime is scoped per request
# inside the handler so every A2A call gets an isolated browser context.
client = NotteClient()

# Sensible default model. Escalate to anthropic/claude-sonnet-4-5 or
# openai/gpt-4.1 for harder multi-step flows via NOTTE_REASONING_MODEL.
REASONING_MODEL = os.getenv("NOTTE_REASONING_MODEL", "gemini/gemini-2.5-flash")
MAX_STEPS = int(os.getenv("NOTTE_MAX_STEPS", "15"))
SOLVE_CAPTCHAS = os.getenv("NOTTE_SOLVE_CAPTCHAS", "false").lower() == "true"
USE_PROXIES = os.getenv("NOTTE_USE_PROXIES", "false").lower() == "true"

# Bindu agent configuration
config = {
    "author": "bindu.builder@getbindu.com",
    "name": "notte_browser_agent",
    "description": (
        "Real-browser web automation agent powered by Notte. Navigates JS-rendered "
        "pages, fills forms, handles auth, solves captchas, and returns Pydantic-"
        "validated structured output."
    ),
    "deployment": {
        "url": os.getenv("BINDU_DEPLOYMENT_URL", "http://localhost:3773"),
        "expose": True,
        "cors_origins": ["http://localhost:5173"],
    },
    "skills": ["skills/notte-browser-skill"],
}


def handler(messages: list[dict[str, str]]) -> str:
    """Run the latest user message as a Notte browser task.

    Args:
        messages: A2A message history; we use the latest user turn as the task.

    Returns:
        The agent's final answer as a string (JSON if the caller asked for
        structured output, free text otherwise).
    """
    if not messages:
        return (
            "Please provide a browser task. Example: 'Go to news.ycombinator.com "
            "and return the top 5 posts as JSON with title, url, and points.'"
        )

    latest_user = next(
        (
            m
            for m in reversed(messages)
            if isinstance(m, dict) and m.get("role") == "user"
        ),
        None,
    )
    if latest_user is None:
        return "No user message found — please send a task as a user-role message."
    task = latest_user.get("content", "")
    if not isinstance(task, str) or not task.strip():
        return "Empty task — please describe the browser action you want."

    with client.Session(
        solve_captchas=SOLVE_CAPTCHAS,
        proxies=USE_PROXIES,
    ) as session:
        agent = client.Agent(
            session=session,
            reasoning_model=REASONING_MODEL,
            max_steps=MAX_STEPS,
        )
        response = agent.run(task=task)

    answer = getattr(response, "answer", None)
    if answer is None:
        return "Notte agent returned no answer — try raising NOTTE_MAX_STEPS or a stronger NOTTE_REASONING_MODEL."
    return answer


if __name__ == "__main__":
    bindufy(config, handler)

​
Skill Configuration

Create skills/notte-browser-skill/skill.yaml: 
id: notte-browser-skill
name: notte-browser-skill
version: 1.0.0
author: bindu.builder@getbindu.com
description: |
  Real-browser automation skill powered by Notte. Navigates JavaScript-rendered
  pages, fills forms, clicks through multi-step flows, solves captchas, and
  routes through proxies. Use whenever the task needs a real browser (not just
  HTTP) — dynamic pages, e-commerce flows, or extraction from pages that won't
  respond to `requests` / `curl`.

tags:
  - browser-automation
  - web-agent
  - web-scraping
  - form-filling
  - captcha
  - proxies

input_modes:
  - application/json

output_modes:
  - application/json
  - text/plain

examples:
  - "Go to news.ycombinator.com and return the top 5 posts as JSON with title, url, points, author"
  - "Search 'air force 1' on nike.com, solve any captcha, and return the current price and availability"
  - "Fill the contact form at https://example.com/contact with name=Jane, email=jane@ex.com, submit, and confirm the success state"

capabilities_detail:
  real_browser:
    supported: true
    description: "Runs a Chromium-based Notte cloud session — JavaScript renders, forms submit, cookies persist. Local or alternate-browser runtimes require passing cdp_url / extra params to client.Session()."
  multi_step_workflows:
    supported: true
    description: "Natural-language task routed through a Notte agent with configurable max_steps and reasoning_model"
  captcha_solving:
    supported: true
    description: "Set NOTTE_SOLVE_CAPTCHAS=true to enable automatic captcha resolution on the Session"
  proxies:
    supported: true
    description: "Set NOTTE_USE_PROXIES=true to route traffic through Notte's managed proxies"

assessment:
  keywords:
    - browser
    - navigate
    - click
    - fill
    - form
    - login
    - captcha
    - proxy
    - dynamic
    - javascript
    - spa
    - multi-step
    - checkout
    - booking

  specializations:
    - domain: dynamic_page_extraction
      confidence_boost: 0.3
    - domain: multi_step_web_workflows
      confidence_boost: 0.3
    - domain: e_commerce_checkout
      confidence_boost: 0.25

  anti_patterns:
    - "static html fetch"
    - "public json api"
    - "offline file processing"
    - "pdf text extraction without a browser"
    - "database query"

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How It Works

Notte SDK configuration
  • NotteClient(): a single long-lived client read from NOTTE_API_KEY in the environment.
  • client.Session(solve_captchas=..., proxies=...): a context-managed browser session, scoped per request so every A2A call gets an isolated Chromium context with its own cookies and fingerprint.
  • client.Agent(session, reasoning_model, max_steps): the agent loop on top of the session.
    • reasoning_model (NOTTE_REASONING_MODEL, default gemini/gemini-2.5-flash) — LiteLLM model id; escalate to anthropic/claude-sonnet-4-5 or openai/gpt-4.1 for harder multi-step flows.
    • max_steps (NOTTE_MAX_STEPS, default 15) — per-task step budget.
  • NOTTE_SOLVE_CAPTCHAS=true flips on Notte’s built-in captcha solver for the session.
  • NOTTE_USE_PROXIES=true routes traffic through Notte’s managed proxy pool, which helps with rate-limited or geo-blocked targets.
Bridging the bindu message → Notte task
  • The handler walks messages in reverse to find the latest role == "user" entry and pulls its content string. That string becomes the task argument to agent.run(...) — there’s no prompt construction, no tool catalog wiring, no system prompt to author. Notte is the agent.
  • Empty histories, missing user turns, and empty content all return helpful error strings rather than raising.
What agent.run() returns
  • A response object whose .answer attribute is a single string. If the task asks for structured output (“…as JSON with keys X, Y”) the string is JSON; otherwise it’s free text.
  • The handler returns response.answer as-is — no schema enforcement on the Bindu side. If .answer is None, the handler returns a hint to raise NOTTE_MAX_STEPS or use a stronger reasoning model.
Why use it
  • The headless browser runs in Notte’s cloud, not on your machine. JavaScript renders, forms submit, captchas can be solved, and proxies are available — all without you wiring Playwright, Selenium, or a captcha provider.

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Dependencies

uv init
uv add bindu python-dotenv notte-sdk
notte-sdk isn’t bundled with Bindu’s agents extra — install it explicitly or boot fails on AuthenticationError.

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Environment Setup

Create .env file: 
# Notte API key — get one at https://console.notte.cc
NOTTE_API_KEY=your_notte_api_key

# Optional tuning
NOTTE_REASONING_MODEL=gemini/gemini-2.5-flash
NOTTE_MAX_STEPS=15
NOTTE_SOLVE_CAPTCHAS=false
NOTTE_USE_PROXIES=false

# Optional Bindu deployment override
BINDU_DEPLOYMENT_URL=http://localhost:3773

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Run

uv run notte-browser-agent.py
Examples:
  • “Find the cheapest flight from SF to LA on Google Flights for next Monday”
  • “Go to news.ycombinator.com and return the top 5 posts as JSON with title, url, and points”
  • “Search ‘air force 1’ on nike.com, solve any captcha, and return the current price and availability”
  • “Fill the contact form at https://example.com/contact with name=Jane, email=jane@ex.com, submit, and confirm the success state”
Expect 10–30s per task for multi-step flows. Each request gets its own browser context.

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Example API Calls

{
  "jsonrpc": "2.0",
  "method": "message/send",
  "params": {
    "message": {
      "role": "user",
      "kind": "message",
      "messageId": "9f11c870-5616-49ad-b187-d93cbb100001",
      "contextId": "9f11c870-5616-49ad-b187-d93cbb100002",
      "taskId": "9f11c870-5616-49ad-b187-d93cbb100003",
      "parts": [
        {
          "kind": "text",
          "text": "Find the cheapest flight from SF to LA on Google Flights for next Monday and return the airline, departure time, and price as JSON."
        }
      ]
    },
    "skillId": "notte-browser-skill",
    "configuration": {
      "acceptedOutputModes": ["application/json"]
    }
  },
  "id": "9f11c870-5616-49ad-b187-d93cbb100003"
}

{
  "jsonrpc": "2.0",
  "method": "tasks/get",
  "params": {
    "taskId": "9f11c870-5616-49ad-b187-d93cbb100003"
  },
  "id": "9f11c870-5616-49ad-b187-d93cbb100004"
}

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Frontend Setup

# Clone the Bindu repository
git clone https://github.com/GetBindu/Bindu

# Navigate to frontend directory
cd frontend

# Install dependencies
npm install

# Start frontend development server
npm run dev
Open http://localhost:5173 and try to chat with the Notte browser agent.