# Model Context Protocol Testcases

Testcases collected from https://spec.modelcontextprotocol.io/specification/2024-11-05/basic/ and https://spec.modelcontextprotocol.io/specification/2024-11-05/server/.

## Basic Protocol Testcases

### Message Format

#### Request Message

```json
{
  "jsonrpc": "2.0",
  "id": "string | number",
  "method": "string",
  "params": {
    "key": "value"
  }
}
```

#### Response Message

```json
{
  "jsonrpc": "2.0",
  "id": "string | number",
  "result": {
    "key": "value"
  }
}
```

#### Notification Message

```json
{
  "jsonrpc": "2.0",
  "method": "string",
  "params": {
    "key": "value"
  }
}
```

### Lifecycle Testcases

#### Initialization Request

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "initialize",
  "params": {
    "protocolVersion": "2024-11-05",
    "capabilities": {
      "roots": {
        "listChanged": true
      },
      "sampling": {}
    },
    "clientInfo": {
      "name": "ExampleClient",
      "version": "1.0.0"
    }
  }
}
```

#### Initialization Response

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "protocolVersion": "2024-11-05",
    "capabilities": {
      "logging": {},
      "prompts": {
        "listChanged": true
      },
      "resources": {
        "subscribe": true,
        "listChanged": true
      },
      "tools": {
        "listChanged": true
      }
    },
    "serverInfo": {
      "name": "ExampleServer",
      "version": "1.0.0"
    }
  }
}
```

#### Initialization Notification

```json
{
  "jsonrpc": "2.0",
  "method": "notifications/initialized"
}
```

#### Initialization Error (Unsupported Version)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "Unsupported protocol version",
    "data": {
      "supported": ["2024-11-05"],
      "requested": "1.0.0"
    }
  }
}
```

### Tool Testcases

#### Ping Request

```json
{
  "jsonrpc": "2.0",
  "id": "123",
  "method": "ping"
}
```

#### Ping Response

```json
{
  "jsonrpc": "2.0",
  "id": "123",
  "result": {}
}
```

#### Cancellation Notification

```json
{
  "jsonrpc": "2.0",
  "method": "notifications/cancelled",
  "params": {
    "requestId": "123",
    "reason": "User requested cancellation"
  }
}
```

#### Progress Request

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "some_method",
  "params": {
    "_meta": {
      "progressToken": "abc123"
    }
  }
}
```

#### Progress Notification

```json
{
  "jsonrpc": "2.0",
  "method": "notifications/progress",
  "params": {
    "progressToken": "abc123",
    "progress": 50,
    "total": 100
  }
}
```

## Server Testcases

### Tool Testcases

#### Tool List Request

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list",
  "params": {
    "cursor": "optional-cursor-value"
  }
}
```

#### Tool List Response

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "tools": [
      {
        "name": "get_weather",
        "description": "Get current weather information for a location",
        "inputSchema": {
          "type": "object",
          "properties": {
            "location": {
              "type": "string",
              "description": "City name or zip code"
            }
          },
          "required": ["location"]
        }
      }
    ],
    "nextCursor": "next-page-cursor"
  }
}
```

#### Tool Call Request

```json
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "get_weather",
    "arguments": {
      "location": "New York"
    }
  }
}
```

#### Tool Call Response

```json
{
  "jsonrpc": "2.0",
  "id": 2,
  "result": {
    "content": [
      {
        "type": "text",
        "text": "Current weather in New York:\nTemperature: 72°F\nConditions: Partly cloudy"
      }
    ],
    "isError": false
  }
}
```

#### Tool List Changed Notification

```json
{
  "jsonrpc": "2.0",
  "method": "notifications/tools/list_changed"
}
```

### Resource Testcases

#### Resource List Request

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "resources/list",
  "params": {
    "cursor": "optional-cursor-value"
  }
}
```

#### Resource List Response

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "resources": [
      {
        "uri": "file:///project/src/main.rs",
        "name": "main.rs",
        "description": "Primary application entry point",
        "mimeType": "text/x-rust"
      }
    ],
    "nextCursor": "next-page-cursor"
  }
}
```

#### Resource Read Request

```json
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "resources/read",
  "params": {
    "uri": "file:///project/src/main.rs"
  }
}
```

#### Resource Read Response

```json
{
  "jsonrpc": "2.0",
  "id": 2,
  "result": {
    "contents": [
      {
        "uri": "file:///project/src/main.rs",
        "mimeType": "text/x-rust",
        "text": "fn main() {\n    println!(\"Hello world!\");\n}"
      }
    ]
  }
}
```

#### Resource Template List Request

```json
{
  "jsonrpc": "2.0",
  "id": 3,
  "method": "resources/templates/list"
}
```

#### Resource Template List Response

```json
{
  "jsonrpc": "2.0",
  "id": 3,
  "result": {
    "resourceTemplates": [
      {
        "uriTemplate": "file:///{path}",
        "name": "Project Files",
        "description": "Access files in the project directory",
        "mimeType": "application/octet-stream"
      }
    ]
  }
}
```

#### Resource List Changes Notification

```json
{
  "jsonrpc": "2.0",
  "method": "notifications/resources/list_changed"
}
```

#### Resource Description Request

```json
{
  "jsonrpc": "2.0",
  "id": 4,
  "method": "resources/subscribe",
  "params": {
    "uri": "file:///project/src/main.rs"
  }
}
```

#### Resource Updated Notification

```json
{
  "jsonrpc": "2.0",
  "method": "notifications/resources/updated",
  "params": {
    "uri": "file:///project/src/main.rs"
  }
}
```

#### Resource Error (Not Found)

```json
{
  "jsonrpc": "2.0",
  "id": 5,
  "error": {
    "code": -32002,
    "message": "Resource not found",
    "data": {
      "uri": "file:///nonexistent.txt"
    }
  }
}
```

### Tool Result

#### Text Content

```json
{
  "type": "text",
  "text": "Tool result text"
}
```

#### Image Content

```json
{
  "type": "image",
  "data": "base64-encoded-data",
  "mimeType": "image/png"
}
```

#### Resource Content

```json
{
  "type": "resource",
  "resource": {
    "uri": "resource://example",
    "mimeType": "text/plain",
    "text": "Resource content"
  }
}
```