---
title: "Markdown mirror defined | Agent Ready Checklist"
description: "Markdown mirror: A .md twin of an HTML page, advertised with a link rel=alternate tag or Link header (AR-READ-09). Related rows: AR-READ-01, AR-READ-09."
canonical: https://agentreadychecklist.com/glossary/markdown-mirror
site: "Agent Ready Checklist"
last_updated: 2026-11-05
section: "Glossary"
---

# Markdown mirror defined | Agent Ready Checklist

> Markdown mirror: A .md twin of an HTML page, advertised with a link rel=alternate tag or Link header (AR-READ-09). Related rows: AR-READ-01, AR-READ-09.

Source: https://agentreadychecklist.com/glossary/markdown-mirror
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).

# Markdown mirror

A .md twin of an HTML page, advertised with a link rel=alternate tag or Link header (AR-READ-09). Example: <link rel="alternate" type="text/markdown" href="/docs/quickstart.md">. Related rows: AR-READ-01 (Answer in the initial HTML), AR-READ-09 (Advertise a markdown mirror). The guide "One-day agent-readiness sprint" covers a row that names Markdown mirror.

## Definition

A .md twin of an HTML page, advertised with a link rel=alternate tag or Link header (AR-READ-09).

## Example

```html
<link rel="alternate" type="text/markdown" href="/docs/quickstart.md">
```

## Where it appears on the checklist

-   [AR-READ-01](https://agentreadychecklist.com/checklist/ar-read-01/)Answer in the initial HTML: Put the answer in the initial HTML: server-rendered or prerendered, not injected by a single-page app after load.
-   [AR-READ-09](https://agentreadychecklist.com/checklist/ar-read-09/)Advertise a markdown mirror: Advertise a markdown mirror with <link rel="alternate" type="text/markdown"> or an equivalent HTTP Link header.
-   [Guide](https://agentreadychecklist.com/guides/one-day-agent-readiness-sprint/)The one-day agent-readiness sprint
-   [Guide](https://agentreadychecklist.com/guides/test-with-a-plain-fetch-client/)How to test with a plain-fetch client
-   [Guide](https://agentreadychecklist.com/guides/javascript-only-pages-without-a-rewrite/)How to handle JavaScript-only pages without a rewrite

## Sources

-   [github.com/agentready-org/standard/blob/main/spec/spec.md](https://github.com/agentready-org/standard/blob/main/spec/spec.md)read 2026-11-04

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