How to Use the Home Assistant MCP in OpenAI Agents SDK

Q: How do I use the OpenAI Agents SDK to turn on a light in Home Assistant?

Your agent will use the callhaservice tool. It needs to specify the domain as 'light', the service as 'turnon', and provide the correct entityid for the light in the servicedata.

Q: Can my OpenAI agent see all my Home Assistant devices?

Yes. The agent can call listentitystates to get a complete list of all entities, their current states, and their attributes. This is how it learns what devices are available to control.

Q: What's the best way to check Home Assistant status with the OpenAI Agents SDK?

Use the getapistatus tool as a simple ping to see if the Home Assistant API is responsive. For a more thorough check, your agent can call checkhaconfiguration to validate the configuration itself.

Build production-grade Home Assistant agents with the safety and tracing of the OpenAI Agents SDK.

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Connect Home Assistant MCP to OpenAI Agents SDK

Create your Vinkius account to connect Home Assistant to OpenAI Agents SDK and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Home Assistant with OpenAI Agents SDK

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Control Your Home with Guardrails

This is how you give your agent control without losing sleep. Use `call_ha_service` to manage lights, switches, and climate. The OpenAI SDK's built-in guardrails can validate the agent's proposed action before it ever hits your Home Assistant instance, preventing it from sending a bogus command. Every action is tracked. When an agent triggers a script with `script.turn_on` or changes a scene, you get a full trace in your OpenAI dashboard. You'll see exactly what it did, what parameters it used, and why it chose that action. No more black boxes.

Build State-Aware Automations

An agent needs to see before it can act. It starts by calling `list_entity_states` to get a full device inventory. From there, it uses `get_entity_state` to check if a door is locked or a window is open before it adjusts the thermostat. This MCP Server lets you build sophisticated logic. For instance, an agent can pull sensor data with `get_entity_history`, decide the basement is too damp, and then use the SDK's handoff feature to pass control to a specialized 'dehumidifier' agent. That agent then fires `call_ha_service` to turn on the right appliance.

Your OpenAI Agent Discovers Everything

Your Home Assistant setup is unique. Your agent knows this because it calls `list_available_services` to discover every possible action your system supports, right from the source. This means no hard-coding service calls for your specific smart plugs or thermostats. This approach also lets your agent use your existing automations. It can `fire_ha_event` to kick off a complex routine you’ve already perfected inside Home Assistant. It’s the perfect way to connect the OpenAI agent's reasoning ability to the trusted automation engine running in your house.

Setup guide

Set up Home Assistant MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Home Assistant tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Home Assistant tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Home Assistant tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Home Assistant Agent",
            instructions="You have access to Home Assistant tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about Home Assistant MCP in OpenAI Agents SDK

Your agent will use the `call_ha_service` tool. It needs to specify the domain as 'light', the service as 'turn_on', and provide the correct entity_id for the light in the service_data.

Yes. The agent can call `list_entity_states` to get a complete list of all entities, their current states, and their attributes. This is how it learns what devices are available to control.

Use the `get_api_status` tool as a simple ping to see if the Home Assistant API is responsive. For a more thorough check, your agent can call `check_ha_configuration` to validate the configuration itself.

This is a managed MCP server that requires zero installation on your Home Assistant box. You just point your agent to the Vinkius endpoint. It's faster to set up and works with any compatible AI client, not just one.

This server only accesses the data needed to execute your agent's requests, like entity states from `get_entity_state` or your schedule from `get_calendar_events`. Vinkius handles the authentication, and each request runs in an ephemeral, zero-trust sandbox that is destroyed after use.

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