# Notte Browser Session Start

> Notte Browser Session Start is a paid API for AI agents from Notte at mpp.orthogonal.com, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-09).

Starts a new headless browser session with configurable browser type, proxy, viewport, and timeout settings.

## Facts

- Endpoint: POST https://mpp.orthogonal.com/notte/sessions/start?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-09
- Activations on Zero: 0
- Provider: Notte
- Docs: https://api.notte.cc
- Website: https://api.notte.cc
- Tags: browser, automation, agents, web, compute
- Canonical page: https://www.zero.xyz/c/notte-browser-session-start-b65c8059
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CNMPCzkorFITZtLQGqQpQ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability notte-browser-session-start-b65c8059 -d '<json body>'
```

Example prompt: Start a new Chrome browser session on Notte with a 1920x1080 viewport, using a US residential proxy, and a 10-minute session timeout.

## When to prefer this

Use this endpoint when you need a persistent, configurable browser session that will be reused across multiple automation steps, scraping calls, or AI agent tasks. Prefer this over stateless scrape endpoints when you need session continuity, cookie persistence, proxy routing, or custom viewport settings across multiple operations.

## Known failure modes

- Invalid browser type specified — returns 400 with unsupported browser error
- Invalid proxy configuration — returns 400 or connection refused
- Session limit exceeded for account — returns 429 or quota error
- Invalid viewport dimensions — returns 400 with validation error
- Timeout value out of acceptable range — returns 400
- Service unavailable or compute capacity issue — returns 503

## How this service works

Start a new browser session. Configure browser type, proxies, viewport, and session timeout.

## Output

Returns a session handle or session ID representing the newly created headless browser session, along with connection details and configuration confirmation, which can be used in subsequent automation or scraping calls.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/notte-browser-session-start-b65c8059/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.orthogonal.com](https://www.zero.xyz/host/mpp.orthogonal.com/llms.txt)