---
title: "Fenced code block defined | Agent Ready Checklist"
description: "Fenced code block: Code set apart from prose and tagged with its language, in markdown with backticks and in HTML with a language-* class. AR-READ-05."
canonical: https://agentreadychecklist.com/glossary/fenced-code-block
site: "Agent Ready Checklist"
last_updated: 2026-11-05
section: "Glossary"
---

# Fenced code block defined | Agent Ready Checklist

> Fenced code block: Code set apart from prose and tagged with its language, in markdown with backticks and in HTML with a language-* class. AR-READ-05.

Source: https://agentreadychecklist.com/glossary/fenced-code-block
Site: Agent Ready Checklist
Last reviewed: 2026-11-05
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# Fenced code block

Code set apart from prose and tagged with its language, in markdown with backticks and in HTML with a language-\* class. AR-READ-05. Example: <pre><code class="language-bash">npm install acme</code></pre>. Related row: AR-READ-05 (Fenced, language-tagged code). AR-READ-05 asks: Fence code snippets and tag them with a language.

## Definition

Code set apart from prose and tagged with its language, in markdown with backticks and in HTML with a language-\* class. AR-READ-05.

## Example

```html
<pre><code class="language-bash">npm install acme</code></pre>
```

## Where it appears on the checklist

-   [AR-READ-05](https://agentreadychecklist.com/checklist/ar-read-05/)Fenced, language-tagged code: Fence code snippets and tag them with a language.

## 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.