---
title: "Structure"
description: "The MCP Description (mcpdesc) specification — versions, status, and the canonical source of truth."
source: "https://mcpdesc.org/docs/specification/"
---

The **MCP Description** (`mcpdesc`) specification defines a portable, machine-readable format for describing the capabilities of a Model Context Protocol (MCP) server — its tools, resources, prompts, transports, security, and metadata — as a static document.

Canonical source

These pages mirror the specification whose canonical source of truth is the `spec/` folder of [cisco-open/mcptoolkit-contract](https://github.com/cisco-open/mcptoolkit-contract/tree/main/spec). A community-hosted home at `spec.mcpdesc.org` is planned. Where these pages differ from upstream, upstream wins.

## Versions

| Version                                 | Status |            |
| --------------------------------------- | ------ | ---------- |
| [**0.7.0**](/docs/specification/0.7.0/) | Draft  | **Latest** |

See the [changelog](/docs/specification/changelog) for the full version history, and the [format overview](/format) for a friendly introduction.