# 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/session_3af76894-52db-4722-9d21-03e18ff366da/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-136e6410
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GsC23SftqbHM9XN43deqW

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-136e6410 -d '<json body>'
```

Example prompt: My Browserbase browser session is about to run out of time — can you extend session session_3af76894-52db-4722-9d21-03e18ff366da so I can finish the automation I'm running?

## When to prefer this

Use this endpoint when you have an active Browserbase session that is approaching its time limit and need to keep it alive without creating a new session. This avoids the overhead of establishing a new WebSocket connection and preserves existing browser state, cookies, and page context.

## Known failure modes

- Session ID not found or already expired — 404 or similar error
- Payment of 0.002 USDC not accepted or insufficient balance — payment failure
- Session already at maximum allowed duration — extension rejected
- Invalid or malformed session ID format — 400 bad request
- Network timeout when calling the extension endpoint

## How this service works

Extend an existing Browserbase session by adding more prepaid time

## Output

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/browserbase-session-extend-136e6410/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)