meMCP - Memory-Enhanced Model Context Protocol

Implementation Reference

• src/tools/modules/MemoryOperations.js:219-244 (handler)

  Core handler function that executes the tool logic: extracts factId, deletes the fact via factStore.deleteFact, and returns success or error response.

  async handleDeleteFact(args) {
    try {
      const { factId } = args;
      
      await this.factStore.deleteFact(factId);
      
      return {
        content: [
          {
            type: 'text',
            text: `✅ Fact ${factId} deleted successfully.`,
          },
        ],
      };
    } catch (error) {
      return {
        content: [
          {
            type: 'text',
            text: `Error deleting fact: ${error.message}`,
          },
        ],
        isError: true,
      };
    }
  }

• src/tools/modules/MemoryOperations.js:90-106 (registration)

  Registers the memory_delete_fact tool with the MCP server, including description, input schema, and reference to the handler function.

  server.registerTool(
    'memory_delete_fact',
    'Delete a fact from the memory system',
    {
      type: 'object',
      properties: {
        factId: {
          type: 'string',
          description: 'The ID of the fact to delete',
        },
      },
      required: ['factId'],
    },
    async (args) => {
      return await this.handleDeleteFact(args);
    }
  );

• src/tools/modules/MemoryOperations.js:93-102 (schema)

  JSON schema defining the input parameters for the tool: requires a 'factId' string.

  {
    type: 'object',
    properties: {
      factId: {
        type: 'string',
        description: 'The ID of the fact to delete',
      },
    },
    required: ['factId'],
  },

• src/tools/MemoryTools.js:23-29 (registration)

  Higher-level registration entry point that calls registerTools on MemoryOperations (which registers memory_delete_fact).

  async registerTools(server) {
    // Register tools from modular components
    this.operations.registerTools(server);
    this.queryHandler.registerTools(server);
    this.streamingTools.registerTools(server);
    this.management.registerTools(server);
  }

• src/tools/MemoryTools.js:14-15 (helper)

  Instantiates the MemoryOperations class with factStore and qualityScorer dependencies.

  this.operations = new MemoryOperations(factStore, qualityScorer);
  this.queryHandler = new MemoryQueryHandler(factStore, processor);