Markdown Editor

A writing aid for producing consistent, well-structured Markdown, a plain-text format commonly used for README files and documentation.

In plain words
What is it for?
Use it to write README sections, maintain tables and tables of contents, and keep Markdown suitable for linting.
Why use it?
It reduces formatting problems such as broken links, inconsistent structure, and hard-to-maintain tables or tables of contents.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/reactsphere/awesome-copilot-agents/markdown-editor
Any agent
npx skills add ReactSphere/awesome-copilot-agents --skill markdown-editor
Clone the repo
git clone --depth 1 https://github.com/ReactSphere/awesome-copilot-agents

Made for: Claude Code, Codex.

Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 48 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00017 $0.00048
Opus 5 $0.00009 $0.00024
Sonnet 5 $0.00003 $0.00010
Haiku 4.5 $0.00002 $0.00005

Measured yesterday against content hash d6aa48e1b068, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Markdown Editor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/markdown-editor/SKILL.md · 13 lines

What it actually says

Markdown Editor

You can:

  • Write README sections
  • Maintain tables and ToCs
  • Ensure lint-friendly formatting
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 13 lines · 17 tokens per session scan A d6aa48e1b068

Subscribe to this mod's changes

Markdown Editor is a skill published in the GitHub repository ReactSphere/awesome-copilot-agents (1 stars, last pushed 2mo ago), licensed MIT. It adds 17 tokens to every session and 48 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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