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Programmatic Control Setup

showcase/integrations/langgraph-python/docs/setup/programmatic-control-setup.mdx

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<Steps> <Step> ### Install the LangGraph Python SDK
<InstallPythonSDK />
</Step> <Step> ### Wire CopilotKit middleware into your graph
Programmatic control (`copilotkit.runAgent`, `agent.subscribe`,
`agent.addMessage`) drives runs through the same agent your chat UI
uses, so the backend wiring is the same one-line `CopilotKitMiddleware`
setup.

<DemoCode file="src/agents/frontend_tools.py" region="middleware" />

For the headless `useInterrupt` pattern, also use LangGraph's native
`interrupt(...)` inside a graph node and resume with
`forwardedProps: { command: { resume, interruptEvent } }` from the
frontend.
</Step> </Steps>