think

Implementation Reference

• src/mcp/think.ts:70-81 (handler)

  The actual handler for the 'think' tool - records a thought into internal state and returns a success message.

  async ({ thought }) => {
    thoughts.push({
      timestamp: new Date().toISOString(),
      content: thought
    });
    return {
      content: [{
        type: "text",
        text: "Thought recorded successfully"
      }]
    };
  }

• src/mcp/think.ts:67-69 (schema)

  The 'think' tool's schema registration with Zod validation - requires a non-empty 'thought' string parameter.

  server.tool(
    "think",
    { thought: z.string().min(1, "Thought cannot be empty").describe("The thought content to record") },

• src/mcp/think.ts:62-148 (registration)

  The registerThinkTool function that registers the 'think' tool (plus get_thoughts, clear_thoughts, get_thought_stats) on the MCP server.

  export function registerThinkTool(server: McpServer) {
    // Use closure state, but keep the class exported for the old test
    let thoughts: Thought[] = [];
  
    // Register think command
    server.tool(
      "think",
      { thought: z.string().min(1, "Thought cannot be empty").describe("The thought content to record") },
      async ({ thought }) => {
        thoughts.push({
          timestamp: new Date().toISOString(),
          content: thought
        });
        return {
          content: [{
            type: "text",
            text: "Thought recorded successfully"
          }]
        };
      }
    );
  
    // Register get_thoughts command
    server.tool(
      "get_thoughts",
      "Retrieve all recorded thoughts",
      async () => {
        const currentThoughts = [...thoughts];
        return {
          content: [{
            type: "text",
            text: JSON.stringify(currentThoughts, null, 2)
          }]
        };
      }
    );
  
    // Register clear_thoughts command
    server.tool(
      "clear_thoughts",
      "Clear all recorded thoughts",
      async () => {
        const count = thoughts.length;
        thoughts = []; // Reset the array
        return {
          content: [{
            type: "text",
            text: `Cleared ${count} recorded thoughts.`
          }]
        };
      }
    );
  
    // Register get_thought_stats command
    server.tool(
      "get_thought_stats",
      "Get statistics about recorded thoughts",
      async () => {
        const totalThoughts = thoughts.length;
        let statsData; // Renamed to avoid conflict with exported interface
  
        if (totalThoughts === 0) {
          statsData = {
            totalThoughts: 0,
            averageLength: 0,
            oldestThought: null,
            newestThought: null
          };
        } else {
          const averageLength = thoughts.reduce((acc, thought) =>
            acc + thought.content.length, 0) / totalThoughts;
          statsData = {
            totalThoughts,
            averageLength: parseFloat(averageLength.toFixed(2)),
            oldestThought: thoughts[0].timestamp,
            newestThought: thoughts[thoughts.length - 1].timestamp
          };
        }
        
        return {
          content: [{
            type: "text",
            text: JSON.stringify(statsData, null, 2)
          }]
        };
      }
    );

• src/index.ts:10-25 (registration)

  Import and invocation of registerThinkTool in the main entry point, wiring the tool into the server.

  import { registerThinkTool } from "./mcp/think.js";
  
  // Create an MCP server
  const server = new McpServer({
    name: "Local Utilities MCP Server",
    version: "1.0.0"
  });
  
  // Register all utilities
  registerHostnameTool(server);
  registerPublicIpTool(server);
  registerDirectoryTool(server);
  registerNodeVersionTool(server);
  registerPortCheckerTool(server);
  registerTimeTool(server);
  registerThinkTool(server);

• src/mcp/think.ts:20-60 (helper)

  ThinkToolInternalLogic class with helper methods (addThought, getAllThoughts, clearThoughts, getThoughtStats) for managing thoughts internally.

  export class ThinkToolInternalLogic {
    thoughts: Thought[] = []; // Make public for test access if needed, or add methods
  
    addThought(content: string): void {
      this.thoughts.push({
        timestamp: new Date().toISOString(),
        content
      });
    }
  
    getAllThoughts(): Thought[] {
      return [...this.thoughts];
    }
  
    clearThoughts(): void {
      this.thoughts = [];
    }
  
    getThoughtStats(): ThoughtStats {
      const totalThoughts = this.thoughts.length;
      
      if (totalThoughts === 0) {
        return {
          totalThoughts: 0,
          averageLength: 0,
          oldestThought: null,
          newestThought: null
        };
      }
  
      const averageLength = this.thoughts.reduce((acc, thought) => 
        acc + thought.content.length, 0) / totalThoughts;
  
      return {
        totalThoughts,
        averageLength: parseFloat(averageLength.toFixed(2)), // Keep formatted
        oldestThought: this.thoughts[0].timestamp,
        newestThought: this.thoughts[this.thoughts.length - 1].timestamp
      };
    }
  }