How to Use the Home Assistant MCP in Mastra AI

Q: Can Mastra AI trigger custom Home Assistant events?

Yes. The agent uses firehaevent to send custom payloads that match your existing automations. This lets you bridge complex agent workflows with your local system triggers.

Q: How does the agent know if the local API is down?

The workflow runs getapistatus as a preliminary check before running any automation steps. If the test fails, the agent pauses the run and alerts your system administrator.

Build resilient multi-step home automation workflows using Mastra AI and this MCP Server.

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Connect Home Assistant MCP to Mastra AI

Create your Vinkius account to connect Home Assistant to Mastra AI 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 Mastra AI

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Perplexity

Resilient automation workflows with Mastra AI

This MCP Server provides `call_ha_service` to execute physical device changes within your automated Mastra workflows. If a service call fails because a device is temporarily offline, Mastra's built-in engine retries the action with exponential backoff. You define conditional branching based on the live data returned by `get_entity_state`.

Historical analysis and trend tracking

The `get_entity_history` tool pulls past state transitions for any device in your Home Assistant setup. Your Mastra agents use this raw data to spot patterns, like temperature spikes or unusual motion events, over specific time frames. Reading these trends allows the agent to adjust climate schedules or flag potential device failures.

Calendar-driven task execution

The `get_calendar_events` tool retrieves scheduled entries from your configured smart home calendars. Mastra agents use these events to queue up physical actions, like pre-heating the living room before you get home. Coordination of these tasks happens automatically without human intervention.

Setup guide

Set up Home Assistant MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Home Assistant tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "home-assistant-mcp-client",
  servers: {
    "home-assistant-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Home Assistant Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Home Assistant tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Home Assistant transactions"
);
console.log(result.text);

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Common questions about Home Assistant MCP in Mastra AI

Yes, you configure Mastra to require approval before executing critical tools like `call_ha_service` for locks or garage doors. The workflow pauses and waits for your confirmation before sending the command.

Instantiate the client with your MCP endpoint and spread the output of `listTools()` into your agent's tools array. This registers all 15 device-control capabilities in one go.

Yes. The agent uses `fire_ha_event` to send custom payloads that match your existing automations. This lets you bridge complex agent workflows with your local system triggers.

The workflow runs `get_api_status` as a preliminary check before running any automation steps. If the test fails, the agent pauses the run and alerts your system administrator.

Your local configuration details and entity names are never cached on external servers. This MCP Server processes all requests inside an ephemeral, zero-trust V8 sandbox, ensuring your private credentials never leak.

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