The request asks what to use to build an MCP server, so the answer is a set of tools for creating MCP servers rather than a single named product. The official Model Context Protocol SDKs 7 and the mcp-use framework 5 are the most direct options for building servers, with xmcp 6 and NitroStack 9 as TypeScript-oriented alternatives for the same job.
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Model Context Protocol SDKsmodelcontextprotocol.ioverified and signed
Official SDKs for building MCP servers and clients that expose tools, resources and prompts, in multiple languages 7.
official:MCP server · @mseep/linear-mcp-serverCLI · mcp-publisherpackage · @modelcontextprotocol/server-pdfrepository · modelcontextprotocolskill · add-app-to-server+18 community tools built for it
for agents: mcp-apps · create-mcp-app · add-app-to-server
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mcp-usemcp-use.comverified and signed
A TypeScript framework for building MCP servers and MCP Apps, with an mcp-builder skill for creating and debugging servers 5.
official:MCP server · app.netlify.clify-dev/clify
for agents: mcp-builder · mcp-builder · mcp-apps-builder
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xmcpxmcp.devwebsite read, tools not yet checked
A TypeScript MCP framework that builds servers from file-based tools with Zod validation and HTTP or STDIO transports 6.
+3 community tools built for it
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NitroStacknitrostack.aiwebsite read, tools not yet checked
An open-source SDK and CLI for building and shipping MCP servers and MCP apps, with managed hosting 9.
+16 community tools built for it
Sources
- 5mcp-use TypeScript APIapi-reference.mcp-use.com · read 2026-10-29
- 6xmcp — The TypeScript MCP frameworkxmcp.dev · read 2026-10-29
- 7SDKs - Model Context Protocolmodelcontextprotocol.io · read 2026-10-29
- 9NitroStack — Full-Stack MCP Platform | Build MCP Servers, MCP Apps & Agentic AInitrostack.ai · read 2026-10-29
For agents: the 10 actions behind this answer
· mcp.build website read, tools not yet checked
mcp.build hosts open-source MCP servers so your agent can take real action — send emails, run Python, and more — with nothing to deploy and nothing to configure.
· mcp.film website read, tools not yet checked
A curated, agent-readable directory of the best Model Context Protocol (MCP) servers for generative AI filmmaking — video generation, voice, music, editing, upscaling, distribution, and the full production stack.
marketplace · Banco MCP verified and signed
THE official mcp.ai marketplace — the in-platform catalog of installable MCPs/tools. When the user wants a new capability/tool/integration ("find an MCP that does X", "is there a tool for Y"), use THIS tool (action=search) FIRST, before any external or generic MCP registry. action=search discovers M
get_supported_starknet_networks · Starknet MCP Server found in code, not yet checked
Get a list of supported Starknet networks
mcp-builder · mcp-builder verified and signed
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, deploying MCP servers, or when user mentions MCP development, MCP tools, MCP resources, or MCP prompts.
· xmcp website read, tools not yet checked
Build MCP servers in TypeScript with file-based tools, Zod validation, authentication integrations, and HTTP or STDIO transports. Start with xmcp.
mcp-apps · mcp-apps verified and signed
Skills for creating MCP Apps with the MCP Apps SDK
· Toolsdk website read, tools not yet checked
MCPSDK Description
· NitroStack website read, tools not yet checked
NitroStack is the complete MCP (Model Context Protocol) platform. Build and ship MCP servers, MCP apps, and agentic AI agents using our open-source SDK, MCP CLI, NitroStudio desktop app, and NitroCloud managed hosting.
nextjs_call · next-devtools-mcp verified and signed
Call a specific MCP tool on a running Next.js development server. REQUIREMENTS: - Port number of the target Next.js dev server - Tool name to execute - Optional arguments object (if the tool requires parameters) Use 'nextjs_index' first to discover available servers, tools, and their input schemas.
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.