Browserbase Python API library

The Browserbase Python library provides convenient access to the Browserbase REST API from any Python 3.8+ application. The library includes type definitions for all request params and response fields, and offers both synchronous and asynchronous clients powered by httpx.

It is generated with Stainless.

Documentation

The REST API documentation can be found on docs.browserbase.com. The full API of this library can be found in api.md.

Installation

# install from PyPI
pip install browserbase

Usage

The full API of this library can be found in api.md.

import os
from playwright.sync_api import Playwright, sync_playwright
from browserbase import Browserbase

BROWSERBASE_API_KEY = os.environ.get("BROWSERBASE_API_KEY")
BROWSERBASE_PROJECT_ID = os.environ.get("BROWSERBASE_PROJECT_ID")

client = Browserbase(
    # This is the default and can be omitted
    api_key=BROWSERBASE_API_KEY,
)

session = client.sessions.create(
    project_id=BROWSERBASE_PROJECT_ID,
)
print(session.id)


def run(playwright: Playwright) -> None:
    # Connect to the remote session
    chromium = playwright.chromium
    browser = chromium.connect_over_cdp(session.connect_url)
    context = browser.contexts[0]
    page = context.pages[0]

    # Execute Playwright actions on the remote browser tab
    page.goto("https://news.ycombinator.com/")
    page_title = page.title()
    assert page_title == "Hacker News", f"Page title is not 'Hacker News', it is '{page_title}'"
    page.screenshot(path="screenshot.png")

    page.close()
    browser.close()
    print("Done!")


if __name__ == "__main__":
    with sync_playwright() as playwright:
        run(playwright)

Examples

See the examples directory for more usage examples.

[!NOTE] Running the examples requires Rye to be installed.

To run the examples, clone this repository and run the following commands from the project root (this directory):

rye sync
rye run example playwright_basic # replace with the example you want to run

[!NOTE] Make sure you have a .env file that matches the .env.example file in the root of this repository.

Using types

Nested request parameters are TypedDicts. Responses are Pydantic models which also provide helper methods for things like:

Serializing back into JSON, model.to_json()
Converting to a dictionary, model.to_dict()

Typed requests and responses provide autocomplete and documentation within your editor. If you would like to see type errors in VS Code to help catch bugs earlier, set python.analysis.typeCheckingMode to basic.

Nested params

Nested parameters are dictionaries, typed using TypedDict, for example:

from browserbase import Browserbase

client = Browserbase()

session = client.sessions.create(
    project_id="projectId",
    browser_settings={
        "advanced_stealth": True,
        "block_ads": True,
        "captcha_image_selector": "captchaImageSelector",
        "captcha_input_selector": "captchaInputSelector",
        "context": {
            "id": "id",
            "persist": True,
        },
        "extension_id": "extensionId",
        "fingerprint": {
            "browsers": ["chrome"],
            "devices": ["desktop"],
            "http_version": "1",
            "locales": ["string"],
            "operating_systems": ["android"],
            "screen": {
                "max_height": 0,
                "max_width": 0,
                "min_height": 0,
                "min_width": 0,
            },
        },
        "log_session": True,
        "record_session": True,
        "solve_captchas": True,
        "viewport": {
            "height": 0,
            "width": 0,
        },
    },
)
print(session.browser_settings)

File uploads

Request parameters that correspond to file uploads can be passed as bytes, or a PathLike instance or a tuple of (filename, contents, media type).

from pathlib import Path
from browserbase import Browserbase

client = Browserbase()

client.extensions.create(
    file=Path("/path/to/file"),
)

The async client uses the exact same interface. If you pass a PathLike instance, the file contents will be read asynchronously automatically.

Handling errors

When the library is unable to connect to the API (for example, due to network connection problems or a timeout), a subclass of browserbase.APIConnectionError is raised.

When the API returns a non-success status code (that is, 4xx or 5xx response), a subclass of browserbase.APIStatusError is raised, containing status_code and response properties.

All errors inherit from browserbase.APIError.

import browserbase
from browserbase import Browserbase

client = Browserbase()

try:
    client.sessions.create(
        project_id="your_project_id",
    )
except browserbase.APIConnectionError as e:
    print("The server could not be reached")
    print(e.__cause__)  # an underlying Exception, likely raised within httpx.
except browserbase.RateLimitError as e:
    print("A 429 status code was received; we should back off a bit.")
except browserbase.APIStatusError as e:
    print("Another non-200-range status code was received")
    print(e.status_code)
    print(e.response)

Error codes are as follows:

Status Code	Error Type
400	`BadRequestError`
401	`AuthenticationError`
403	`PermissionDeniedError`
404	`NotFoundError`
422	`UnprocessableEntityError`
429	`RateLimitError`
>=500	`InternalServerError`
N/A	`APIConnectionError`

Retries

Certain errors are automatically retried 2 times by default, with a short exponential backoff. Connection errors (for example, due to a network connectivity problem), 408 Request Timeout, 409 Conflict, 429 Rate Limit, and >=500 Internal errors are all retried by default.

You can use the max_retries option to configure or disable retry settings:

from browserbase import Browserbase

# Configure the default for all requests:
client = Browserbase(
    # default is 2
    max_retries=0,
)

# Or, configure per-request:
client.with_options(max_retries=5).sessions.create(
    project_id="your_project_id",
)

Timeouts

By default requests time out after 1 minute. You can configure this with a timeout option, which accepts a float or an httpx.Timeout object:

from browserbase import Browserbase

# Configure the default for all requests:
client = Browserbase(
    # 20 seconds (default is 1 minute)
    timeout=20.0,
)

# More granular control:
client = Browserbase(
    timeout=httpx.Timeout(60.0, read=5.0, write=10.0, connect=2.0),
)

# Override per-request:
client.with_options(timeout=5.0).sessions.create(
    project_id="your_project_id",
)

On timeout, an APITimeoutError is thrown.

Note that requests that time out are retried twice by default.

Advanced

Logging

We use the standard library logging module.

You can enable logging by setting the environment variable BROWSERBASE_LOG to info.

$ export BROWSERBASE_LOG=info

Or to debug for more verbose logging.

How to tell whether `None` means `null` or missing

In an API response, a field may be explicitly null, or missing entirely; in either case, its value is None in this library. You can differentiate the two cases with .model_fields_set:

if response.my_field is None:
  if 'my_field' not in response.model_fields_set:
    print('Got json like {}, without a "my_field" key present at all.')
  else:
    print('Got json like {"my_field": null}.')

Accessing raw response data (e.g. headers)

The "raw" Response object can be accessed by prefixing .with_raw_response. to any HTTP method call, e.g.,

from browserbase import Browserbase

client = Browserbase()
response = client.sessions.with_raw_response.create(
    project_id="your_project_id",
)
print(response.headers.get('X-My-Header'))

session = response.parse()  # get the object that `sessions.create()` would have returned
print(session.id)

These methods return an APIResponse object.

The async client returns an AsyncAPIResponse with the same structure, the only difference being awaitable methods for reading the response content.

`.with_streaming_response`

The above interface eagerly reads the full response body when you make the request, which may not always be what you want.

To stream the response body, use .with_streaming_response instead, which requires a context manager and only reads the response body once you call .read(), .text(), .json(), .iter_bytes(), .iter_text(), .iter_lines() or .parse(). In the async client, these are async methods.

with client.sessions.with

browserbase

Description