Mentor MCP Server

Instructions

Implementation Reference

• src/tools/brainstorm-enhancements/brainstorm-enhancements.ts:101-188 (handler)

  The main handler function that implements the core logic of the 'brainstorm_enhancements' tool. It handles input validation, rate limiting, prompt generation using predefined templates, makes an API call to Deepseek, and formats the response.

  export async function handler(args: unknown): Promise<ToolResponse> {
    // Check rate limit first
    if (!checkRateLimit()) {
      return {
        content: [
          {
            type: 'text',
            text: 'Rate limit exceeded. Please try again later.',
          },
        ],
        isError: true,
      };
    }
  
    // Validate arguments
    if (!args || typeof args !== 'object') {
      return {
        content: [
          {
            type: 'text',
            text: 'Invalid arguments provided.',
          },
        ],
        isError: true,
      };
    }
  
    try {
      // Type guard for BrainstormEnhancementsArgs
      if (!('concept' in args) || typeof args.concept !== 'string') {
        return {
          content: [
            {
              type: 'text',
              text: 'Concept parameter is required and must be a string.',
            },
          ],
          isError: true,
        };
      }
  
      const typedArgs = args as BrainstormEnhancementsArgs;
  
      // Sanitize input
      const sanitizedConcept = sanitizeInput(typedArgs.concept);
  
      // Create the complete prompt
      const prompt = createPrompt(PROMPT_TEMPLATE, {
        concept: sanitizedConcept,
      });
  
      // Make the API call
      const response = await makeDeepseekAPICall(prompt, SYSTEM_PROMPT);
  
      if (response.isError) {
        return {
          content: [
            {
              type: 'text',
              text: `Error generating enhancement ideas: ${response.errorMessage || 'Unknown error'}`,
            },
          ],
          isError: true,
        };
      }
  
      // Return the formatted response
      return {
        content: [
          {
            type: 'text',
            text: response.text,
          },
        ],
      };
    } catch (error) {
      console.error('Brainstorm enhancements tool error:', error);
      return {
        content: [
          {
            type: 'text',
            text: `Error processing enhancement ideas: ${error instanceof Error ? error.message : 'Unknown error'}`,
          },
        ],
        isError: true,
      };
    }
  }

• src/tools/brainstorm-enhancements/brainstorm-enhancements.ts:80-93 (schema)

  The ToolDefinition object defining the tool's name, description, and input schema (requires 'concept' string).

  export const definition: ToolDefinition = {
    name: 'brainstorm_enhancements',
    description: 'Generates creative ideas for improving a given concept, product, or feature, focusing on innovation, feasibility, and user value.',
    inputSchema: {
      type: 'object',
      properties: {
        concept: {
          type: 'string',
          description: 'A description of the concept, product, or feature to enhance',
        },
      },
      required: ['concept'],
    },
  };

• src/types/index.ts:74-76 (schema)

  TypeScript interface defining the expected input arguments for the tool.

  export interface BrainstormEnhancementsArgs {
    concept: string;
  }

• src/server.ts:56-64 (registration)

  Registers the tool's definition in the listTools handler, making it discoverable by clients.

  this.server.setRequestHandler(ListToolsRequestSchema, async () => ({
    tools: [
      secondOpinion.definition,
      codeReview.definition,
      designCritique.definition,
      writingFeedback.definition,
      brainstormEnhancements.definition,
    ],
  }));

• src/server.ts:125-134 (registration)

  Handles incoming callTool requests for 'brainstorm_enhancements' by validating args and invoking the tool handler.

  case "brainstorm_enhancements": {
    if (!isBrainstormEnhancementsArgs(args)) {
      throw new McpError(
        ErrorCode.InvalidParams,
        "Invalid parameters for brainstorm enhancements"
      );
    }
    response = await brainstormEnhancements.handler(args);
    break;
  }