# 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 2026-09-14).

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

## Facts

- Endpoint: POST https://x402.browserbase.com/browser/session/sess_7f3a9c2e1b8d4f6a/extend
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/browserbase-session-extend-992a675a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xiMWKJle8Ryj3nOgQNO6C

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-992a675a -d '<json body>'
```

Example prompt: My Browserbase session sess_7f3a9c2e1b8d4f6a is about to run out of time — can you extend it so I have more room to finish scraping?

## When to prefer this

Use this endpoint when you have an active Browserbase session that is about to expire and you want to continue using it without creating a new session. It is preferable to creating a new session when you want to preserve existing browser state, cookies, and page context. Choose this over session recreation when mid-task continuity matters.

## Known failure modes

- Session ID not found or already expired — cannot extend a closed session
- Insufficient USDC payment — extension rejected if prepayment is too low
- Invalid session ID format — malformed sess_ identifier causes rejection
- Session reached maximum allowed duration — extension denied by platform policy

## How this service works

Extend an existing Browserbase session by adding more prepaid time

## Output

Returns confirmation that the session has been extended, including the updated session expiry time and continued WebSocket connection URL for ongoing browser interaction.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/browserbase-session-extend-992a675a/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)