Prompts MCP Server

Instructions

Implementation Reference

• src/tools.ts:216-229 (handler)

  The primary handler function for the 'get_prompt' tool. Validates the input 'name' parameter and fetches the full prompt content from file operations.

  private async handleGetPrompt(args: ToolArguments): Promise<CallToolResult> {
    if (!args.name) {
      throw new Error('Name is required for get_prompt');
    }
    
    const content = await this.fileOps.readPrompt(args.name);
    return {
      content: [
        {
          type: 'text',
          text: content,
        } as TextContent,
      ],
    };

• src/tools.ts:48-56 (schema)

  JSON schema defining the input parameters for the get_prompt tool (requires 'name' as string).

  inputSchema: {
    type: 'object',
    properties: {
      name: {
        type: 'string',
        description: 'Name of the prompt to retrieve',
      },
    },
    required: ['name'],

• src/tools.ts:46-57 (registration)

  Registration of the 'get_prompt' tool definition in the list of available tools returned by getToolDefinitions().

  name: 'get_prompt',
  description: 'Retrieve a prompt by name',
  inputSchema: {
    type: 'object',
    properties: {
      name: {
        type: 'string',
        description: 'Name of the prompt to retrieve',
      },
    },
    required: ['name'],
  },

• src/tools.ts:140-141 (registration)

  Routing registration for 'get_prompt' in the handleToolCall switch statement.

  case 'get_prompt':
    return await this.handleGetPrompt(toolArgs);

• src/fileOperations.ts:50-58 (helper)

  Helper method in PromptFileOperations that reads the full content of the prompt markdown file, used by the get_prompt handler.

  async readPrompt(name: string): Promise<string> {
    const fileName = this.sanitizeFileName(name) + '.md';
    const filePath = path.join(this.promptsDir, fileName);
    try {
      return await fs.readFile(filePath, 'utf-8');
    } catch (error) {
      throw new Error(`Prompt "${name}" not found`);
    }
  }