# Browserbase Session Extend

> Browserbase Session Extend is a paid API for AI agents from x402.browserbase.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Extends an existing Browserbase browser session by adding more prepaid time to it

## Facts

- Endpoint: POST https://x402.browserbase.com/browser/session/sess_8f3a2b91-random-test-id/extend
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/browserbase-session-extend-d7874be5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MZlOBqoyo-9FSfBP9BRyU

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 browserbase-session-extend-d7874be5 -d '<json body>'
```

Example prompt: My Browserbase session sess_8f3a2b91-random-test-id is about to expire — can you add more prepaid time to keep it alive so I can finish the web scraping task?

## When to prefer this

Use this endpoint when you have an active Browserbase session that is about to expire or needs more runtime for a long-running browser automation task. Prefer this over creating a new session when you want to preserve existing browser state, cookies, and page context without restarting.

## Known failure modes

- Session ID not found or already expired — returns 404 or similar error
- Insufficient payment or payment failure via x402 protocol
- Session is in a terminal state and cannot be extended
- Invalid session ID format provided
- Rate limiting or server-side throttling causing rejection

## How this service works

Extend an existing Browserbase session by adding more prepaid time

## Output

Returns confirmation that the session has been extended, along with updated session metadata such as the new expiry time or total remaining prepaid time for the specified Browserbase session.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/browserbase-session-extend-d7874be5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.browserbase.com](https://www.zero.xyz/host/x402.browserbase.com/llms.txt)