The request names sdd-mcp-server, which is not directly listed by name among the candidates. The closest match is Planu 4, a local Spec Driven Development MCP server for coding agents that exposes nine sdd_* tools, installable via npx @planu/cli. Model Context Protocol 5 provides official SDKs for building MCP servers, and xmcp 9 is a TypeScript framework for building MCP servers, both useful if you want to build or host a server yourself.
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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 5.
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 · add-app-to-server · create-mcp-app
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xmcpxmcp.devwebsite read, tools not yet checked
A TypeScript framework for building MCP servers with file-based tools, Zod validation, and HTTP or STDIO transports 9.
+3 community tools built for it
Sources
- 4Planu Spec Driven Development for AI coding agentsplanu.dev · read 2026-10-29
- 5SDKs - Model Context Protocolmodelcontextprotocol.io · read 2026-10-29
- 9xmcp — The TypeScript MCP frameworkxmcp.dev · read 2026-10-29
For agents: the 10 actions behind this answer
python-mcp-server-generator · python-mcp-server-generator verified and signed
Use this skill when the user wants to create a new Model Context Protocol (MCP) server in Python. Also use it to expose Python functions, an API, or a database to AI clients as MCP tools. The skill makes a uv project with the MCP Python SDK v2 (MCPServer), typed tools, in-memory tests, and client co
neo4j-mcp-skill · neo4j-mcp-skill verified and signed
Use when installing, configuring, or troubleshooting the official Neo4j MCP server (neo4j/mcp) — connecting Claude Code, Claude Desktop, Cursor, Windsurf, VS Code, Kiro, or other MCP-compatible editors to a Neo4j database via stdio or HTTP transport. Covers the four MCP tools (get-schema, read-cyphe
building-mcp-server-on-cloudflare · building-mcp-server-on-cloudflare verified and signed
Builds remote MCP (Model Context Protocol) servers on Cloudflare Workers with tools, OAuth authentication, and production deployment. Generates server code, configures auth providers, and deploys to Workers. Use when: user wants to "build MCP server", "create MCP tools", "remote MCP", "deploy MCP",
· Planu website read, tools not yet checked
Local SDD MCP for any coding agent: lock spec, plan, and tasks, then File Manifest patches only. Nine sdd_* tools.
mcp-apps · mcp-apps verified and signed
Skills for creating MCP Apps with the MCP Apps SDK
· Varity MCP Server Reference website read, tools not yet checked
Install the published Varity MCP package, configure a supported editor, and use its machine-readable tool catalog without relying on unreleased source.
· MuleSoft MCP Servers Overview website read, tools not yet checked
MuleSoft Documentation Site
· cz-agents website read, tools not yet checked
Open-source MCP servers for AI agents: ARES, ISIR, ÄNB, sanctions, EU business registries. Free tier included. Also available as no-code web DD app for compliance teams.
· 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.
· state-memory-mcp website read, tools not yet checked
Zero-infrastructure, deterministic Model Context Protocol (MCP) server providing AI coding agents with a structured, persistent SQLite state graph for tracking tasks, decisions, and blockers.
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.