---
title: "MCP server card defined | Agent Ready Checklist"
description: "MCP server card: JSON describing an MCP server before connection: name, version, transport endpoint, capabilities. Draft (SEP-2127); AR-ACT-04 (MAY)."
canonical: https://agentreadychecklist.com/glossary/mcp-server-card
site: "Agent Ready Checklist"
last_updated: 2026-11-05
section: "Glossary"
---

# MCP server card defined | Agent Ready Checklist

> MCP server card: JSON describing an MCP server before connection: name, version, transport endpoint, capabilities. Draft (SEP-2127); AR-ACT-04 (MAY).

Source: https://agentreadychecklist.com/glossary/mcp-server-card
Site: Agent Ready Checklist
Last reviewed: 2026-11-05
Agent endpoints: https://agentreadychecklist.com/llms.txt (index), https://agentreadychecklist.com/openapi.json (API), https://agentreadychecklist.com/mcp (MCP server), https://agentreadychecklist.com/ask (search)
Access: https://agentreadychecklist.com/auth.md (no key). Pricing: https://agentreadychecklist.com/pricing.md (free).

# MCP server card

JSON describing an MCP server before connection: name, version, transport endpoint, capabilities. Draft (SEP-2127); AR-ACT-04 (MAY). Example: {"serverInfo":{"name":"search","version":"1.0.0"},"transport":{"type":"streamable-http","endpoint":"/mcp"}}. Related rows: AR-FIND-04 (AI Catalog at .well-known), AR-ACT-04 (MCP server card). AR-ACT-04 asks: Ship an MCP server card for pre-connection discovery. Cloudflare Radar found MCP Server Cards and API Catalogs together on fewer than 15 sites of its scanned set.

## Definition

JSON describing an MCP server before connection: name, version, transport endpoint, capabilities. Draft (SEP-2127); AR-ACT-04 (MAY).

## Example

```json
{"serverInfo":{"name":"search","version":"1.0.0"},"transport":{"type":"streamable-http","endpoint":"/mcp"}}
```

## Where it appears on the checklist

-   [AR-FIND-04](https://agentreadychecklist.com/checklist/ar-find-04/)AI Catalog at .well-known: Publish an AI Catalog at /.well-known/ai-catalog.json listing every agent-facing resource (MCP server card, OpenAPI, A2A card, docs, llms.txt, skills), linked with <link rel="ai-catalog"> and an HTTP Link header.
-   [AR-ACT-04](https://agentreadychecklist.com/checklist/ar-act-04/)MCP server card: Ship an MCP server card for pre-connection discovery.

## Sources

-   [blog.cloudflare.com/agent-readiness/](https://blog.cloudflare.com/agent-readiness/)read 2026-11-04

Last reviewed 2026-11-05. AgentReady v2.0, read 2026-11-04.