Redis MCP

Instructions

Implementation Reference

• src/services/mcpService.ts:138-148 (registration)

  Registration of the string_decr tool in the listTools response, including name, description, and input schema.

  {
    name: 'string_decr',
    description: '递减数值',
    inputSchema: {
      type: 'object',
      properties: {
        key: { type: 'string', description: '键名' },
        decrement: { type: 'number', description: '减量值（可选，默认为 1）' }
      },
      required: ['key']
    }

• src/services/mcpService.ts:871-883 (handler)

  The main MCP tool handler function for string_decr. Ensures Redis connection, calls RedisService.decr(key, decrement), and returns the result as formatted JSON text content.

  private async handleStringDecr(args: any) {
    this.ensureRedisConnection();
    const result = await this.redisService!.decr(args.key, args.decrement);
    
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(result, null, 2)
        }
      ]
    };
  }

• src/services/redisService.ts:173-183 (helper)

  Core helper method in RedisService that performs the actual DECR/DECRBY operation using the Redis client.

  async decr(key: string, decrement: number = 1): Promise<RedisOperationResult<number>> {
    return this.executeCommand(async () => {
      if (!this.client) throw new Error('Redis client not initialized');
      
      if (decrement === 1) {
        return await this.client.decr(key);
      } else {
        return await this.client.decrBy(key, decrement);
      }
    });
  }