Spec MCP Server

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Local serverstdio

What is the Spec MCP server?

Connect Spec to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP Server that facilitates spec-driven development workflows, not just Vibe Coding. The spec mcp server is what makes that connection.

What the server does

Model Context Protocol (MCP) server that facilitates spec-driven development workflows by providing structured prompts for generating requirements, design documents, and code following a systematic approach.

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Name — generate-requirements
  • Description — Generate requirements.md using EARS format
  • Input — High-level requirements of the application. Example: 'A Vue.js todo application with task creation, completion tracking, and local storage
  • Output — Structured requirements document in specs/requirements.md
  • Prerequisites — The Prerequisites tool exposed by this server
  • Installation — The Installation tool exposed by this server

Credentials and setup notes

  • Node.js 20+

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Among the file and storage access options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Spec's toolset — Name, Description, Input and 3 more — is a fair guide to whether it matches your workflow. It is maintained by formulahendry; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Available tools

ToolWhat it does
Namegenerate-requirements
DescriptionGenerate requirements.md using EARS format
InputHigh-level requirements of the application. Example: 'A Vue.js todo application with task creation, completion tracking, and local storage persistence'
OutputStructured requirements document in specs/requirements.md
PrerequisitesThe Prerequisites tool exposed by this server.
InstallationThe Installation tool exposed by this server.

How to install the Spec MCP server

{
    "mcpServers": {
        "spec-driven": {
            "command": "npx",
            "args": [
                "-y",
                "mcp-server-spec-driven-development@latest"
            ]
        }
    }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Node.js 20+

Example prompts to try

  • Use Spec to Name.
  • Use Spec to Description.
  • Use Spec to Input.

Frequently asked questions

It connects Spec to MCP-compatible AI assistants such as Claude and Cursor, exposing 6 tools (Name, Description, Input, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Spec directly.