# 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 prevent it from expiring

## Facts

- Endpoint: POST https://x402.browserbase.com/browser/session/sess_7f3a9c2e/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-1958d32d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aR2IhEx1jZ3FprMXJ5_fT

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-1958d32d -d '<json body>'
```

Example prompt: My Browserbase session sess_7f3a9c2e is about to expire — can you extend it to give me more time to finish scraping the page?

## When to prefer this

Use this endpoint when you have an active Browserbase session (obtained via the create-session endpoint) that is approaching its time limit and you need to continue using it without interruption. This is the correct endpoint when you already have a session ID and want to add more prepaid time, rather than creating a brand new session. Prefer this over session recreation when you need to preserve browser state, cookies, and page context already established in the session.

## Known failure modes

- Session ID not found or already expired — session cannot be extended after expiry
- Insufficient USDC balance to cover the $0.002 extension fee
- Session ID in URL path is malformed or invalid
- Payment authorization failure during x402 protocol handshake
- Session is in a terminal or disconnected state and cannot be renewed

## 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 the updated expiry time or remaining duration for the active Browserbase browser session identified by the session ID in the URL.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/browserbase-session-extend-1958d32d/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)