Is there a standard / validator of the front YAML case?

Question

I would like to use YAML front matter as a metadata holder for a general-purpose data manager, for example:

---
layout: "user"
title: "Mario Brega"
slug: "mario-brega"
skills:
  - fire
  - water
  - leaf
---

# Here I will be using Markdown

yes I will, _I swear_

It is used by many static generators like:

• docpad.js ;
• Jekyll ;
• Middleman

---

Question: is there a standard for this? Some tools that I can easily check with, for example, agree that all string values ​​should be quoted, that booleans should not, etc.

Matching a YAML element before a JSON schema will be a big plus.

Answer 1

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- Markdown - , CommonMark.

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