# MCP - AI Agent Example

This example demonstrates how to enable MCP (Model Context Protocol) support in Feast, allowing AI agents and applications to interact with your features through standardized MCP interfaces.

## Prerequisites

1. Python 3.8+
2. Feast installed
3. FastAPI MCP library

## Installation

1. Install Feast with MCP support:

```bash
pip install feast[mcp]
```

Alternatively, you can install the dependencies separately:

```bash
pip install feast
pip install fastapi_mcp
```

## Setup

1. Navigate to this example directory within your cloned Feast repository:

```bash
cd examples/mcp_feature_store
```

2. Initialize a Feast repository in this directory. We'll use the existing `feature_store.yaml` that's already configured for MCP:

```bash
feast init . 
```

This will create a `data` subdirectory and a `feature_repo` subdirectory if they don't exist, and will use the `feature_store.yaml` present in the current directory (`examples/mcp_feature_store`).

3. Apply the feature store configuration:

```bash
cd feature_repo 
feast apply
cd .. # Go back to examples/mcp_feature_store for the next steps
```

## Starting the MCP-Enabled Feature Server

Start the Feast feature server with MCP support:

```bash
feast serve --host 0.0.0.0 --port 6566
```

If MCP is properly configured, you should see a log message indicating that MCP support has been enabled:

```
INFO:feast.feature_server:MCP support has been enabled for the Feast feature server
```

## Available MCP Tools

The fastapi\_mcp integration automatically exposes your Feast feature server's FastAPI endpoints as MCP tools. This means AI assistants can:

* **Call `/get-online-features`** to retrieve features from the feature store
* **Use `/health`** to check server status

## Configuration Details

The key configuration that enables MCP support:

```yaml
feature_server:
    type: mcp                    # Use MCP feature server type
    enabled: true               # Enable feature server
    mcp_enabled: true           # Enable MCP protocol support
    mcp_server_name: "feast-feature-store"
    mcp_server_version: "1.0.0"
```