Documentation

ReadyCmd

class ReadyCmd()

Wrapper class for ready check commands.

wait_for_port

def wait_for_port(port: int)

Wait for a port to be listening. Uses ss command to check if a port is open and listening. Arguments:

port: Port number to wait for

Returns: ReadyCmd that checks for the port Example

from e2b import Template, wait_for_port

template = (
    Template()
    .from_python_image()
    .set_start_cmd('python -m http.server 8000', wait_for_port(8000))
)

wait_for_url

def wait_for_url(url: str, status_code: int = 200)

Wait for a URL to return a specific HTTP status code. Uses curl to make HTTP requests and check the response status. Arguments:

url: URL to check (e.g., ‘http://localhost:3000/health’)
status_code: Expected HTTP status code (default: 200)

Returns: ReadyCmd that checks the URL Example

from e2b import Template, wait_for_url

template = (
    Template()
    .from_node_image()
    .set_start_cmd('npm start', wait_for_url('http://localhost:3000/health'))
)

wait_for_process

def wait_for_process(process_name: str)

Wait for a process with a specific name to be running. Uses pgrep to check if a process exists. Arguments:

process_name: Name of the process to wait for

Returns: ReadyCmd that checks for the process Example

from e2b import Template, wait_for_process

template = (
    Template()
    .from_base_image()
    .set_start_cmd('./my-daemon', wait_for_process('my-daemon'))
)

wait_for_file

def wait_for_file(filename: str)

Wait for a file to exist. Uses shell test command to check file existence. Arguments:

filename: Path to the file to wait for

Returns: ReadyCmd that checks for the file Example

from e2b import Template, wait_for_file

template = (
    Template()
    .from_base_image()
    .set_start_cmd('./init.sh', wait_for_file('/tmp/ready'))
)

wait_for_timeout

def wait_for_timeout(timeout: int)

Wait for a specified timeout before considering the sandbox ready. Uses sleep command to wait for a fixed duration. Arguments:

timeout: Time to wait in milliseconds (minimum: 1000ms / 1 second)

Returns: ReadyCmd that waits for the specified duration Example

from e2b import Template, wait_for_timeout

template = (
    Template()
    .from_node_image()
    .set_start_cmd('npm start', wait_for_timeout(5000))  # Wait 5 seconds
)

​ReadyCmd

​wait_for_port

​wait_for_url

​wait_for_process

​wait_for_file

​wait_for_timeout