mde

mde is a skill for Claude Code, Codex from tylerjhayden/agent-toolkit. It costs 36 tokens per session (442 once invoked), scanned A, original, MIT.

A command-line tool for finding and opening Markdown files in MacDown 3000, a desktop Markdown editor. It can list recent files and manage directories excluded from searches.

In plain words
What is it for?
Use it to open a specific Markdown file, find recently modified notes, view exclusions, or add and remove excluded search patterns.
Why use it?
It makes recently edited notes easier to find and open. Exclusion settings help keep irrelevant folders out of the results.

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/tylerjhayden/agent-toolkit/mde
Any agent
npx skills add tylerjhayden/agent-toolkit --skill mde
Clone the repo
git clone --depth 1 https://github.com/tylerjhayden/agent-toolkit

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for mde

README.md
[![agentmods](https://agentmods.dev/badge/skills/tylerjhayden/agent-toolkit/mde.svg)](https://agentmods.dev/skills/tylerjhayden/agent-toolkit/mde)
Your own site
<a href="https://agentmods.dev/skills/tylerjhayden/agent-toolkit/mde"><img src="https://agentmods.dev/badge/skills/tylerjhayden/agent-toolkit/mde.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 442 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 5.1 $0.00036 $0.00442
Opus 5 $0.00018 $0.00221
Sonnet 5 $0.00007 $0.00088
Haiku 4.5 $0.00004 $0.00044

Measured 5d ago against content hash fcdd03f318d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

mde 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 5d ago.

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/mde/SKILL.md · 61 lines

What it actually says

mde

MacDown 3000 CLI with smart recent-file discovery.

Overview

Opens markdown files in MacDown 3000 with commands for finding recently modified files across the home directory. Supports configurable directory exclusions and path normalization for absolute paths.

When to Use

  • "Open this file in MacDown 3000"
  • "What markdown files did I edit recently?"
  • "Open my most recent markdown file"
  • "Exclude this directory from mde searches"

Common Mistakes

Using full paths in exclusions. The tool normalizes them, but prefer short patterns like archive over ~/Documents/archive.

CLI Usage

mde is aliased in ~/.zshrc to <path-to-skill>/tools/mde.

mde                     # Open MacDown 3000
mde <file>              # Open specific file
mde last                # Open most recently modified .md
mde recent [N]          # List N most recent .md files (default: 5)
mde excludes            # Show exclusion patterns
mde exclude <pattern>   # Add exclusion
mde unexclude <pattern> # Remove exclusion
mde help                # Show help

Configuration

Config file: ~/.config/mde/config.json (override with $MDE_CONFIG_DIR)

{
  "excludes": ["Library", ".Trash", "node_modules"],
  "searchRoot": "~",
  "maxDepth": 10,
  "defaultRecentCount": 5
}

Hidden directories (*/.*) are always excluded automatically.

Data Locations

Operation Path Description
Reads/Writes ~/.config/mde/config.json (or $MDE_CONFIG_DIR) MacDown 3000 CLI configuration
Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 61 lines · 36 tokens per session scan A fcdd03f318d8

Subscribe to this mod's changes

mde is a skill published in the GitHub repository tylerjhayden/agent-toolkit (2 stars, last pushed 6mo ago), licensed MIT. It adds 36 tokens to every session and 442 once invoked, about $0.0002 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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