Skip to main content
Version: 2.25

E2B

haystack_integrations.tools.e2b.bash_tool​

RunBashCommandTool​

Bases: Tool

A :class:~haystack.tools.Tool that executes bash commands inside an E2B sandbox.

Pass the same :class:E2BSandbox instance to multiple tool classes so they all operate in the same live sandbox environment.

Usage example​

python
from haystack_integrations.tools.e2b import E2BSandbox, RunBashCommandTool, ReadFileTool

sandbox = E2BSandbox()
agent = Agent(
    chat_generator=...,
    tools=[
        RunBashCommandTool(sandbox=sandbox),
        ReadFileTool(sandbox=sandbox),
    ],
)

init​

python
__init__(sandbox: E2BSandbox) -> None

Create a RunBashCommandTool.

Parameters:

  • sandbox (E2BSandbox) – The :class:E2BSandbox instance that will execute commands.

to_dict​

python
to_dict() -> dict[str, Any]

Serialize this tool to a dictionary.

from_dict​

python
from_dict(data: dict[str, Any]) -> RunBashCommandTool

Deserialize a RunBashCommandTool from a dictionary.

haystack_integrations.tools.e2b.e2b_sandbox​

E2BSandbox​

Manages the lifecycle of an E2B cloud sandbox.

Instantiate this class and pass it to one or more E2B tool classes (RunBashCommandTool, ReadFileTool, WriteFileTool, ListDirectoryTool) to share a single sandbox environment across all tools. All tools that receive the same E2BSandbox instance operate inside the same live sandbox process.

Usage example​

python
from haystack.components.generators.chat import OpenAIChatGenerator
from haystack.components.agents import Agent

from haystack_integrations.tools.e2b import (
    E2BSandbox,
    RunBashCommandTool,
    ReadFileTool,
    WriteFileTool,
    ListDirectoryTool,
)

sandbox = E2BSandbox()
agent = Agent(
    chat_generator=OpenAIChatGenerator(model="gpt-4o"),
    tools=[
        RunBashCommandTool(sandbox=sandbox),
        ReadFileTool(sandbox=sandbox),
        WriteFileTool(sandbox=sandbox),
        ListDirectoryTool(sandbox=sandbox),
    ],
)

Lifecycle is handled automatically by the Agent's pipeline. If you use the tools standalone, call :meth:warm_up before the first tool invocation:

python
sandbox.warm_up()
# ... use tools ...
sandbox.close()

init​

python
__init__(
    api_key: Secret = Secret.from_env_var("E2B_API_KEY", strict=True),
    sandbox_template: str = "base",
    timeout: int = 120,
    environment_vars: dict[str, str] | None = None,
    instance_id: str | None = None,
) -> None

Create an E2BSandbox instance.

Parameters:

  • api_key (Secret) – E2B API key.
  • sandbox_template (str) – E2B sandbox template name.
  • timeout (int) – Sandbox inactivity timeout in seconds.
  • environment_vars (dict[str, str] | None) – Optional environment variables to inject into the sandbox.
  • instance_id (str | None) – Stable identifier preserved across to_dict/from_dict. When omitted, a fresh UUID is generated. Tools that share the same E2BSandbox instance inherit this id, which is what lets them re-share the instance after a serialization round-trip. Distinct from the cloud-side sandbox id assigned by E2B at warm-up.

warm_up​

python
warm_up() -> None

Establish the connection to the E2B sandbox.

Idempotent -- calling it multiple times has no effect if the sandbox is already running.

Raises:

  • RuntimeError – If the E2B sandbox cannot be created.

close​

python
close() -> None

Shut down the E2B sandbox and release all associated resources.

Call this when you are done to avoid leaving idle sandboxes running.

to_dict​

python
to_dict() -> dict[str, Any]

Serialize the sandbox configuration to a dictionary.

Returns:

  • dict[str, Any] – Dictionary containing the serialised configuration.

from_dict​

python
from_dict(data: dict[str, Any]) -> E2BSandbox

Deserialize an :class:E2BSandbox from a dictionary.

Multiple tools that shared a single :class:E2BSandbox before serialization will share the same restored instance: each tool's from_dict consults a process-wide cache keyed on instance_id. A cache hit is only honored when the full serialized config (api_key, template, timeout, environment_vars) matches the cached entry — a crafted YAML with a guessed id but a different config falls through to a fresh instance and never observes the cached one.

Parameters:

  • data (dict[str, Any]) – Dictionary created by :meth:to_dict.

Returns:

  • E2BSandbox – An :class:E2BSandbox instance ready to be warmed up. May be a previously-restored instance if the id and config match.

haystack_integrations.tools.e2b.list_directory_tool​

ListDirectoryTool​

Bases: Tool

A :class:~haystack.tools.Tool that lists directory contents in an E2B sandbox.

Pass the same :class:E2BSandbox instance to multiple tool classes so they all operate in the same live sandbox environment.

Usage example​

python
from haystack_integrations.tools.e2b import E2BSandbox, ListDirectoryTool

sandbox = E2BSandbox()
agent = Agent(chat_generator=..., tools=[ListDirectoryTool(sandbox=sandbox)])

init​

python
__init__(sandbox: E2BSandbox) -> None

Create a ListDirectoryTool.

Parameters:

  • sandbox (E2BSandbox) – The :class:E2BSandbox instance to list directories from.

to_dict​

python
to_dict() -> dict[str, Any]

Serialize this tool to a dictionary.

from_dict​

python
from_dict(data: dict[str, Any]) -> ListDirectoryTool

Deserialize a ListDirectoryTool from a dictionary.

haystack_integrations.tools.e2b.read_file_tool​

ReadFileTool​

Bases: Tool

A :class:~haystack.tools.Tool that reads files from an E2B sandbox filesystem.

Pass the same :class:E2BSandbox instance to multiple tool classes so they all operate in the same live sandbox environment.

Usage example​

python
from haystack_integrations.tools.e2b import E2BSandbox, ReadFileTool

sandbox = E2BSandbox()
agent = Agent(chat_generator=..., tools=[ReadFileTool(sandbox=sandbox)])

init​

python
__init__(sandbox: E2BSandbox) -> None

Create a ReadFileTool.

Parameters:

  • sandbox (E2BSandbox) – The :class:E2BSandbox instance to read files from.

to_dict​

python
to_dict() -> dict[str, Any]

Serialize this tool to a dictionary.

from_dict​

python
from_dict(data: dict[str, Any]) -> ReadFileTool

Deserialize a ReadFileTool from a dictionary.

haystack_integrations.tools.e2b.sandbox_toolset​

E2BToolset​

Bases: Toolset

A :class:~haystack.tools.Toolset that bundles all E2B sandbox tools.

All tools in the set share a single :class:E2BSandbox instance so they operate inside the same live sandbox process. The toolset owns the sandbox lifecycle: calling :meth:warm_up starts the sandbox, and serialisation round-trips preserve the shared-sandbox relationship.

Usage example​

python
from haystack.components.generators.chat import OpenAIChatGenerator
from haystack.components.agents import Agent

from haystack_integrations.tools.e2b import E2BToolset

agent = Agent(
    chat_generator=OpenAIChatGenerator(model="gpt-4o"),
    tools=E2BToolset(),
)

init​

python
__init__(
    api_key: Secret = Secret.from_env_var("E2B_API_KEY", strict=True),
    sandbox_template: str = "base",
    timeout: int = 120,
    environment_vars: dict[str, str] | None = None,
) -> None

Create an E2BToolset.

Parameters:

  • api_key (Secret) – E2B API key. Defaults to Secret.from_env_var("E2B_API_KEY").
  • sandbox_template (str) – E2B sandbox template name. Defaults to "base".
  • timeout (int) – Sandbox inactivity timeout in seconds. Defaults to 120.
  • environment_vars (dict[str, str] | None) – Optional environment variables to inject into the sandbox.

warm_up​

python
warm_up() -> None

Start the shared E2B sandbox (idempotent).

close​

python
close() -> None

Shut down the shared E2B sandbox and release cloud resources.

to_dict​

python
to_dict() -> dict[str, Any]

Serialize this toolset to a dictionary.

from_dict​

python
from_dict(data: dict[str, Any]) -> E2BToolset

Deserialize an E2BToolset from a dictionary.

haystack_integrations.tools.e2b.write_file_tool​

WriteFileTool​

Bases: Tool

A :class:~haystack.tools.Tool that writes files to an E2B sandbox filesystem.

Pass the same :class:E2BSandbox instance to multiple tool classes so they all operate in the same live sandbox environment.

Usage example​

python
from haystack_integrations.tools.e2b import E2BSandbox, WriteFileTool

sandbox = E2BSandbox()
agent = Agent(chat_generator=..., tools=[WriteFileTool(sandbox=sandbox)])

init​

python
__init__(sandbox: E2BSandbox) -> None

Create a WriteFileTool.

Parameters:

  • sandbox (E2BSandbox) – The :class:E2BSandbox instance to write files to.

to_dict​

python
to_dict() -> dict[str, Any]

Serialize this tool to a dictionary.

from_dict​

python
from_dict(data: dict[str, Any]) -> WriteFileTool

Deserialize a WriteFileTool from a dictionary.