# 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 2026-10-23).

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

## Facts

- Endpoint: POST https://x402.browserbase.com/browser/session/session_77578795-4fbb-40c4-a9d2-ac64a9fb0150/extend?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/browserbase-session-extend-2190127b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qT5eMXWg0tkigYjx8YBDe

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-2190127b -d '<json body>'
```

Example prompt: My Browserbase session session_77578795-4fbb-40c4-a9d2-ac64a9fb0150 is about to expire — can you extend it so it stays alive longer?

## When to prefer this

Use this endpoint when you have an active Browserbase session that is approaching its time limit and you need to extend it without creating a new session. This is preferable to creating a new session when you want to preserve session state, cookies, and in-page context.

## Known failure modes

- Session ID not found or already expired — returns 404 or similar error
- Insufficient USDC balance to cover the $0.01 extension fee — payment failure
- Session has already been terminated and cannot be extended
- Invalid session ID format — returns validation error
- Payment authorization fails on the x402 protocol layer

## 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 details such as the new expiry time or total duration added.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/browserbase-session-extend-2190127b/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)