Daytona Sandbox Tools

Daytona Sandbox Tools

Description

The Daytona sandbox tools give CrewAI agents access to isolated, ephemeral compute environments powered by Daytona. Three tools are available so you can give an agent exactly the capabilities it needs:

• DaytonaExecTool — run any shell command inside a sandbox.
• DaytonaPythonTool — execute a block of Python source code inside a sandbox.
• DaytonaFileTool — read, write, append, list, delete, and inspect files inside a sandbox; also supports move, find (content grep), search (filename glob), chmod (permissions), replace (bulk find-and-replace), and exists.

All three tools share the same sandbox lifecycle controls, so you can mix and match them while keeping state in a single persistent sandbox.

Installation

uv add "crewai-tools[daytona]"
# or
pip install "crewai-tools[daytona]"

Set your API key:

export DAYTONA_API_KEY="your-api-key"

DAYTONA_API_URL and DAYTONA_TARGET are also respected if set.

Sandbox Lifecycle

All three tools inherit lifecycle controls from DaytonaBaseTool:

Mode	How to enable	Sandbox created	Sandbox deleted
Ephemeral (default)	persistent=False (default)	On every _run call	At the end of that same call
Persistent	persistent=True	Lazily on first use	At process exit (via atexit), or manually via tool.close()
Attach	sandbox_id="<id>"	Never — attaches to an existing sandbox	Never — the tool will not delete a sandbox it did not create

Ephemeral mode is the safe default: nothing leaks if the agent forgets to clean up. Use persistent mode when you want filesystem state or installed packages to carry across multiple tool calls — this is typical when pairing DaytonaFileTool with DaytonaExecTool.

Examples

One-shot Python execution (ephemeral)

from crewai_tools import DaytonaPythonTool

tool = DaytonaPythonTool()
result = tool.run(code="print(sum(range(10)))")
print(result)
# {"exit_code": 0, "result": "45\n", "artifacts": ExecutionArtifacts(stdout="45\n", charts=[])}

Multi-step shell session (persistent)

from crewai_tools import DaytonaExecTool, DaytonaFileTool

# Create the persistent sandbox via the first tool, then attach the second
# tool to it so both share state (installed packages, files, env vars).
exec_tool = DaytonaExecTool(persistent=True)
exec_tool.run(command="pip install httpx -q")
file_tool = DaytonaFileTool(sandbox_id=exec_tool.active_sandbox_id)

file_tool.run(
    action="write",
    path="workspace/script.py",
    content="import httpx; print(f'httpx loaded, version {httpx.__version__}')",
)
exec_tool.run(command="python workspace/script.py")

Note

By default, each tool with persistent=True lazily creates its own sandbox on first use. The pattern above shares a single sandbox across multiple tools by reading the first tool’s active_sandbox_id after a .run() call and passing it to the others via sandbox_id=.... With persistent=False (the default), every .run() call gets a fresh sandbox that’s deleted at the end of that call.

Attach to an existing sandbox

from crewai_tools import DaytonaExecTool

tool = DaytonaExecTool(sandbox_id="my-long-lived-sandbox")
result = tool.run(command="ls workspace")

Custom sandbox parameters

Pass Daytona’s CreateSandboxFromSnapshotParams kwargs via create_params:

from crewai_tools import DaytonaExecTool

tool = DaytonaExecTool(
    persistent=True,
    create_params={
        "language": "python",
        "env_vars": {"MY_FLAG": "1"},
        "labels": {"owner": "crewai-agent"},
    },
)

Searching, moving, and modifying files

from crewai_tools import DaytonaFileTool

file_tool = DaytonaFileTool(persistent=True)

# Find every TODO in the source tree (grep file contents recursively)
file_tool.run(action="find", path="workspace/src", pattern="TODO:")

# Find all Python files (glob match on filenames)
file_tool.run(action="search", path="workspace", pattern="*.py")

# Make a script executable
file_tool.run(action="chmod", path="workspace/run.sh", mode="755")

# Rename or move a file
file_tool.run(
    action="move",
    path="workspace/draft.md",
    destination="workspace/final.md",
)

# Bulk find-and-replace across multiple files
file_tool.run(
    action="replace",
    paths=["workspace/src/a.py", "workspace/src/b.py"],
    pattern="old_function",
    replacement="new_function",
)

# Quick existence check before a destructive op
file_tool.run(action="exists", path="workspace/cache.db")

Agent integration

from crewai import Agent, Task, Crew
from crewai_tools import DaytonaExecTool, DaytonaPythonTool, DaytonaFileTool

exec_tool = DaytonaExecTool(persistent=True)
python_tool = DaytonaPythonTool(persistent=True)
file_tool = DaytonaFileTool(persistent=True)

coder = Agent(
    role="Sandbox Engineer",
    goal="Write and run code in an isolated environment",
    backstory="An engineer who uses Daytona sandboxes to safely execute code and manage files.",
    tools=[exec_tool, python_tool, file_tool],
    verbose=True,
)

task = Task(
    description="Write a Python script that prints the first 10 Fibonacci numbers, save it to workspace/fib.py, and run it.",
    expected_output="The first 10 Fibonacci numbers printed to stdout.",
    agent=coder,
)

crew = Crew(agents=[coder], tasks=[task])
result = crew.kickoff()

Parameters

Shared (DaytonaBaseTool)

All three tools accept these parameters at initialization:

Parameter	Type	Default	Description
api_key	str | None	$DAYTONA_API_KEY	Daytona API key. Falls back to the DAYTONA_API_KEY env var.
api_url	str | None	$DAYTONA_API_URL	Daytona API URL override.
target	str | None	$DAYTONA_TARGET	Daytona target region.
persistent	bool	False	Reuse one sandbox across all calls and delete it at process exit.
sandbox_id	str | None	None	Attach to an existing sandbox by id or name.
create_params	dict | None	None	Extra kwargs forwarded to CreateSandboxFromSnapshotParams (e.g. language, env_vars, labels).
sandbox_timeout	float	60.0	Timeout in seconds for sandbox create/delete operations.

DaytonaExecTool

Parameter	Type	Required	Description
command	str	✓	Shell command to execute.
cwd	str | None		Working directory inside the sandbox.
env	dict[str, str] | None		Extra environment variables for this command.
timeout	int | None		Maximum seconds to wait for the command.

DaytonaPythonTool

Parameter	Type	Required	Description
code	str	✓	Python source code to execute.
argv	list[str] | None		Argument vector forwarded via CodeRunParams.
env	dict[str, str] | None		Environment variables forwarded via CodeRunParams.
timeout	int | None		Maximum seconds to wait for execution.

DaytonaFileTool

Parameter	Type	Required	Description
action	str	✓	One of: read, write, append, list, delete, mkdir, info, exists, move, find, search, chmod, replace.
path	str | None	✓ for all actions except replace	Absolute path inside the sandbox.
content	str | None	✓ for append	Content to write or append.
binary	bool		If True, content is base64 on write; returns base64 on read.
recursive	bool		For delete: remove directories recursively.
mode	str | None		For mkdir: octal permissions for the new directory (defaults to "0755"). For chmod: octal permissions to apply to the target.
destination	str | None	✓ for move	Destination path for move.
pattern	str | None	✓ for find, search, replace	For find: substring matched against file CONTENTS. For search: glob matched against file NAMES (e.g. *.py). For replace: text to replace inside files.
replacement	str | None	✓ for replace	Replacement text for pattern.
paths	list[str] | None	✓ for replace	List of file paths in which to replace text.
owner	str | None		For chmod: new file owner.
group	str | None		For chmod: new file group.

Note

For chmod, pass at least one of mode, owner, or group — any field left as None is left unchanged on the target.

Tip

For files larger than a few KB, create the file first with action="write" and empty content, then send the body via multiple action="append" calls of ~4 KB each to stay within tool-call payload limits.