mcp-connected-hearts/index.js

MCP to control Connected Hearts

#!/usr/bin/env node

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

const server = new McpServer({
  name: "mcp-connected-hearts",
  version: "1.0.0"
});

const HEART_IP = "http://192.168.29.175";

server.registerTool("display_text", {
  title: "Display",
  description: "Display a message",
  inputSchema: {
    text: z.string().max(30).describe("Text to display")
  }
}, async ({ text }) => {
  const res = await fetch(`${HEART_IP}/oled?msg=${encodeURIComponent(text)}`);
  return { content: [{ type: "text", text: `Displayed: "${text}" ` }] };
});

server.registerTool("set_named_color", {
  title: "Color",
  description: "Set the color: red, green, blue, white, off",
  inputSchema: {
    color: z.enum(["red", "green", "blue", "white", "off"]).describe("Named color")
  }
}, async ({ color }) => {
  await fetch(`${HEART_IP}/rgb?color=${color}`);
  return { content: [{ type: "text", text: `Set color to ${color}` }] };
});

server.registerTool("set_rgb_values", {
  title: "Custom RGB",
  description: "Set R, G, B values ",
  inputSchema: {
    r: z.number().min(0).max(255).describe("Red (0-255)"),
    g: z.number().min(0).max(255).describe("Green (0-255)"),
    b: z.number().min(0).max(255).describe("Blue (0-255)")
  }
}, async ({ r, g, b }) => {
  await fetch(`${HEART_IP}/rgb?r=${r}&g=${g}&b=${b}`);
  return { content: [{ type: "text", text: `Set RGB to (${r}, ${g}, ${b})` }] };
});

server.registerTool("buzz_now", {
  title: "Buzz Now",
  description: "buzz",
  inputSchema: {}
}, async () => {
  await fetch(`${HEART_IP}/buzz`);
  return { content: [{ type: "text", text: "Buzzed" }] };
});

server.registerTool("read_buttons", {
  title: "Button",
  description: "Check if any button is pressed",
  inputSchema: {}
}, async () => {
  const res = await fetch(`${HEART_IP}/btn`);
  const btnStatus = await res.text();
  return { content: [{ type: "text", text: `Button :\n${btnStatus}` }] };
});

const transport = new StdioServerTransport();
await server.connect(transport);