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devops-gitops-corpus

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// and communicate with it via standard input/output.
type: "stdio",
command: "npx",
args: ["-y", "@modelcontextprotocol/server-filesystem", path.resolve("./data")],
},
},
});
const mcpAgent = new Agent({
name: "MCP Filesystem Agent",
instructions: "You can interact with the local filesystem. List files, read files, write files.",
llm: new VercelAIProvider(),
model: openai("gpt-4o-mini"),
tools: await mcpConfig.getTools(),
});
new VoltAgent({
agents: {
fsAgent: mcpAgent,
},
});
```
**Code Breakdown (My Understanding):**
- **`MCPConfiguration`:** This is where I defined the `filesystem` server connection.
- `type: "stdio"` tells VoltAgent it's a local command to run.
- `command: "npx"` specifies _how_ to run it.
- `args: [...]` provides the details: the MCP server package (`@modelcontextprotocol/server-filesystem`) and, crucially, `path.resolve("./data")`. This locks the server down, only allowing it to see inside a `./data` folder within my project. **I had to remember to actually create this `data` folder later (`mkdir dat...
- **`Agent` Definition:** I created my `Agent` instance. The key part is `tools: await mcpConfig.getTools()`. This line tells VoltAgent: "Go connect to all the servers I defined in `mcpConfig`, find out what tools they offer (like `readFile`, `writeFile` from the filesystem server), and make those tools available for t...
- **`VoltAgent` Initialization:** I started the main VoltAgent server and registered my `mcpAgent` under the key `fsAgent`. This key is how I'll select it in the VoltOps LLM Observability Platform.
#### Running the Agent
Before running, we need two things: an API key for the LLM and the `data` directory we restricted the MCP server to.
1. **Create `.env` file:** In the root of the `mcp-filesystem-agent` project, I created a file named `.env`.
2. **Add API Key:** Inside `.env`, I added my OpenAI key:
```bash title=".env"
OPENAI_API_KEY=your_openai_api_key_here
```
(Obviously, replace `your_openai_api_key_here` with your actual key).
3. **Create `data` Directory and Test File:** In the terminal, still in the project root:
```bash
mkdir data
echo "Hello from the MCP agent's accessible file!" > data/test.txt
```
4. **Install Dependencies:** Make sure all packages are installed:
<Tabs>
<TabItem value="npm" label="npm" default>
```bash
npm install
```
</TabItem>
<TabItem value="yarn" label="yarn">
```bash
yarn install
```
</TabItem>
<TabItem value="pnpm" label="pnpm">
```bash
pnpm install
```
</TabItem>
</Tabs>
5. **Start the Agent:** Run the development server:
<Tabs>
<TabItem value="npm" label="npm" default>
```bash
npm run dev
```
</TabItem>
<TabItem value="yarn" label="yarn">
```bash
yarn dev
```
</TabItem>
<TabItem value="pnpm" label="pnpm">
```bash
pnpm dev
```
</TabItem>
</Tabs>
I saw the VoltAgent server startup message, including the link to the VoltOps Platform:
```bash