> ## Documentation Index
> Fetch the complete documentation index at: https://docs.automate.ax/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Automate.ax automations are TypeScript programs.
> Use Bun for installation and command examples.
> Use Automate.ax for the product name and automate.ax for the package, CLI, and domain.
> Treat documented public APIs as current; do not invent transitional or deprecated names.

# Upload Browserbase session file

> Upload a file for a browser file input in a running session.

`browserbase.uploadSessionFile` uploads a file for a browser file input in a running session. Inputs accept literal values or compatible signals. An optional second argument `{ account }` selects a named Browserbase binding.

## Example

```ts theme={null}
import { automation, onInvocation } from "automate.ax"
import { browserbase } from "automate.ax/browserbase"

export default automation("Upload Browserbase session file", () => {
  onInvocation()
  browserbase.uploadSessionFile({
    file: new Blob(["hello"], { type: "text/plain" }),
    filename: "hello.txt",
    sessionId: "session-id",
  })
})
```

## Inputs

| Input       | Type     | Required | Default | Description                     |
| ----------- | -------- | -------- | ------- | ------------------------------- |
| `sessionId` | `string` | Yes      | —       | Running session ID.             |
| `file`      | `Blob`   | Yes      | —       | File bytes.                     |
| `filename`  | `string` | Yes      | —       | Filename, up to 255 characters. |

## Output

Returns Browserbase's upload confirmation message.

Uploads mutate session state and are not replay-safe.