# 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 prevent session expiration

## Facts

- Endpoint: POST https://x402.browserbase.com/browser/session/sess_7f3a9d2e1b48c6/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-fe1ed857
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0tuMGef0RjJxNjIBt-T-w

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-fe1ed857 -d '<json body>'
```

Example prompt: My Browserbase session is about to expire — can you extend it with more prepaid time so my web automation keeps running without interruption?

## When to prefer this

Use this endpoint when you have an active Browserbase headless browser session that is approaching its time limit and you need to continue using it without creating a new session. This is preferable to creating a new session when you need to preserve state, cookies, or ongoing browser context from the current session.

## Known failure modes

- Session ID not found or already expired — session cannot be extended
- Insufficient prepaid credits to cover the extension cost
- Session has already reached the maximum allowable duration
- Invalid or malformed session ID in the URL path
- Payment processing failure via x402 protocol

## 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 new expiration time or updated session duration for the specified Browserbase session ID.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/browserbase-session-extend-fe1ed857/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)