A deprecated guide to building MCP servers with mcp-use, covering callable actions, data resources, reusable prompts, and interactive widgets. It includes design references and code examples, and directs users to the replacement skill, mcp-app-builder.
DEPRECATED: This skill has been replaced by `mcp-app-builder`. Check if `mcp-app-builder` is available in the skills folder. If not, install it: `npx skills install mcp-use/mcp-use --skill mcp-app-builder` Use `mcp-app-builder` instead of this skill. Build Model Context Protocol (MCP) servers with mcp-use framework. Use when creating MCP servers, defining tools/resources/prompts, working with mcp-use, bootstrapping MCP projects, or when user mentions MCP development, tools, resources, or prompts.
mcp-builder is an older guide to building MCP servers with mcp-use, allowing AI to use external actions and data. It explains how to separate callable actions, read-only data, reusable prompts, and interactive interfaces. It also introduces server-side definition examples and helper functions for choosing response formats such as text, JSON, and images.
Consult it when reading an existing mcp-use implementation or checking the basic structure of a Tool, Resource, or Prompt. It points to supporting references on design, React TSX Widgets, and URI templates that retrieve data according to supplied arguments. These references cover the areas described by the older guide.
server.prompt().”mcp-app-builder.”This skill is deprecated and explicitly directs users to mcp-app-builder. If the replacement is not installed, the listed command is npx skills install mcp-use/mcp-use --skill mcp-app-builder. Implementation examples use mcp-use and Zod; Widgets assume React TSX.
This overview was written by AI (OpenAI Codex) from the public SKILL.md. Check the original below for the exact behavior.
AI rated this skill on four points using only the contents of its SKILL.md. Stars and popularity are not taken into account.
The total counts each point as A = 25, B = 15, C = 5. Rated by AI (OpenAI Codex) as of Oct 20, 2026. Treat it as a guide and read the original before installing.
Review the instructions the agent will receive before you install.
Build production-ready MCP servers with tools, resources, prompts, and interactive widgets using mcp-use.
Decompose user requests into tools, widgets, and resources. Decide what needs UI vs text.
Read design-and-architecture.md: when planning what to build, deciding tool vs widget, or designing UX flows.
server.tool(), server.resource(), server.prompt() coderesources/ folderimport {
MCPServer,
text,
object,
markdown,
html,
image,
widget,
error,
} from "mcp-use/server";
import { z } from "zod";
const server = new MCPServer({ name: "my-server", version: "1.0.0" });
// Tool
server.tool(
{
name: "my-tool",
description: "...",
schema: z.object({ param: z.string().describe("...") }),
},
async ({ param }) => text("result"),
);
// Resource
server.resource(
{ uri: "config://settings", name: "Settings", mimeType: "application/json" },
async () => object({ key: "value" }),
);
// Prompt
server.prompt(
{
name: "my-prompt",
description: "...",
schema: z.object({ topic: z.string() }),
},
async ({ topic }) => text(`Write about ${topic}`),
);
server.listen();
Response helpers: text(), object(), markdown(), html(), image(), audio(), binary(), error(), mix(), widget()
Server methods: server.tool(), server.resource(), server.resourceTemplate(), server.prompt(), server.listen()
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Coordinate large research or generation tasks across a model team. An orchestrator plans and checks the work, workers execute subtasks in parallel, and an advisor reviews the plan and draft before the results are combined.
Develop ChatGPT apps with interactive React widgets using mcp-use and OpenAI Apps SDK. Guidance covers app scope, server tools, shared state, and display settings. This skill is deprecated and points users to mcp-app-builder.
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Build MCP servers that let AI access actions and data using mcp-use. The guide covers project setup, reusable prompts, interactive React interfaces, authentication, error handling, and deployment, with reference files for each area.