LangChain Deep Agents

Early Access

The Agentic Sandbox is currently in early access. Features and APIs may change. To enable it for your organization, you can opt-in in the Sandbox page in the Gatana Dashboard.

Gatana provides a Python implementation of the LangChain Deep Agent sandbox backend.

$ uv add gatana-langchain

from gatana_client import GatanaClient
from langchain_anthropic import ChatAnthropic

from deepagents import create_deep_agent
from gatana_langchain import GatanaSandbox

# Env variables: GATANA_API_KEY and GATANA_ORG_ID
# Or, ~/.gatana.config

client = GatanaClient()

with GatanaSandbox(client=client) as backend:
    agent = create_deep_agent(
        model=ChatAnthropic(model="claude-sonnet-4-20250514"),
        system_prompt="You are a coding assistant with sandbox access.",
        backend=backend,
    )

    result = agent.invoke(
        {
            "messages": [
                {
                    "role": "user",
                    "content": "Create a Python script that prints the Fibonacci sequence and run it",
                }
            ]
        }
    )
    print(result["messages"][-1].content)
# Sandbox is automatically deleted when the `with` block exits.

For more details, see: