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fix-markdown-fences SKILL.md skillA

fix-markdown-fences from rjmurillo/ai-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add rjmurillo/ai-agents/fix-markdown-fences@v1.5.0

Pins v1.5.0 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: rjmurillo/ai-agents
Path: .claude/skills/fix-markdown-fences/SKILL.md
Versions recorded: 5
Latest version: v1.5.0, committed Oct 13, 2026
First version recorded: Oct 13, 2026
Size: 18,209 bytes
Repository stars: 48
License: MIT

Repair malformed markdown code fence closings. Use when you say "fix markdown fences", "repair code block closings", "markdown rendering broken", "code blocks bleeding into content", or "validate markdown code blocks" on any .md file. Do NOT use for documentation accuracy checks or verifying code examples (use doc-accuracy).

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Fix Markdown Code Fence Closings

Scan and repair malformed closing fences in markdown files. Closing fences must never contain language identifiers.

## Triggers

| Trigger Phrase | Operation |
|----------------|-----------|
| `fix markdown fences` | Scan and repair malformed fence closings |
| `repair code block closings` | Fix closing fences with language identifiers |
| `markdown rendering broken` | Diagnose and fix fence issues |
| `code blocks bleeding into content` | Fix unclosed or malformed fences |
| `validate markdown code blocks` | Check all fences for correctness |

## Quick Reference

| Symptom | Cause | Fix |
|---------|-------|-----|
| Code block bleeds into text | Closing fence has language identifier | Insert a bare closing fence above it; the line then opens the next block |
| Nested blocks render wrong | Missing closing fence before new opening | Insert closing fence |
| Content cut off at end of file | Unclosed code block | Append closing fence |

## When to Use

**Use this skill when:**

- Markdown code blocks render incorrectly or bleed into surrounding content
- Closing fences have language identifiers (e.g., ` ```python ` instead of ` ``` `)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add rjmurillo/ai-agents/fix-markdown-fences@sha256:390e3aaa0381862a

The line at the top of this page pins the label v1.5.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_f73qat4iqhpxywwp.svg)](https://markdownregistry.com/a/art_f73qat4iqhpxywwp)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, all committed on Oct 13, 2026.

version	committed	commit	size	audit
v1.5.0 latest	2026-10-13	9f3841c	18,209 B	A	view · diff
v1.5.0	2026-10-13	160ce41	18,071 B	A	view · diff
v1.5.0	2026-10-13	354c3fc	17,922 B	A	view · diff
v1.5.0	2026-10-13	8bc3c0e	17,668 B	A	view · diff
v1.4.0	2026-10-13	d7085d9	17,263 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (18209 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

rjmurillo/ai-agents · 48 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_f73qat4iqhpxywwp
GET https://markdownregistry.com/api/v1/resolve?ref=rjmurillo/ai-agents/fix-markdown-fences
GET https://markdownregistry.com/api/v1/blob/390e3aaa0381862adace76703d5043d6e78d360a9cc7a69b30962528b49a6556

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.