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.
npx skills add MarkEdit-app/MarkEdit-skill --skill markeditgit clone --depth 1 https://github.com/MarkEdit-app/MarkEdit-skillWrote 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.
[](https://agentmods.dev/skills/markedit-app/markedit-skill/markedit)<a href="https://agentmods.dev/skills/markedit-app/markedit-skill/markedit"><img src="https://agentmods.dev/badge/skills/markedit-app/markedit-skill/markedit/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/markedit-app/markedit-skill/markedit"><img src="https://agentmods.dev/badge/skills/markedit-app/markedit-skill/markedit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00025 | $0.03065 |
| Opus 5.5 | $0.00010 | $0.01226 |
| Sonnet 5.5 | $0.00005 | $0.00613 |
| Haiku 4.5 | $0.00003 | $0.00307 |
Grade A, and why
markedit scanned grade A with 1 finding 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 2mo 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL -o file "<url>" && shasum -a 256 file How it starts
The opening of the file, as written. The whole thing — 243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Purpose
Help users configure and extend MarkEdit, a free and open-source markdown editor for macOS.
Key Capabilities
- Upgrade the MarkEdit app
- Install, upgrade, and manage MarkEdit extensions
- Submit extensions and themes to the official registry
- Configure MarkEdit settings and supporting files
- Troubleshoot MarkEdit issues
- Answer questions related to MarkEdit
Core Concepts
File Locations
| Path | Description |
|---|---|
~/Library/Containers/app.cyan.markedit/Data/Documents/scripts/ |
Extensions directory |
~/Library/Containers/app.cyan.markedit/Data/Documents/extensions.json |
Installed extension metadata |
~/Library/Containers/app.cyan.markedit/Data/Documents/settings.json |
Advanced settings |
~/Library/Containers/app.cyan.markedit/Data/Documents/editor.css |
Custom stylesheets |
~/Library/Containers/app.cyan.markedit/Data/Documents/editor.js |
Custom JavaScript |
~/Library/Containers/app.cyan.markedit/Data/Documents/statistics-rules.json |
Custom statistics rules |
~/Library/Containers/app.cyan.markedit/Data/Documents/pandoc.yaml |
Pandoc defaults |
~/Library/Containers/app.cyan.markedit/Data/Documents/debug/ |
Troubleshooting information |
Extension Registry
Use the official registry metadata:
https://raw.githubusercontent.com/MarkEdit-app/extensions/main/index.json
The registry website is useful for browsing. For installation and upgrades, fetch index.json from registry.url in extensions.json, using the official URL above only when that field is absent or null. Do not fall back when extensions.json is malformed. Match the user's request against each entry's name, description, and ID. If multiple entries match, ask the user to choose.
Each entry's latest object provides version, immutable asset url, sha256, and optional minAppVersion. Accept registry schemaVersion values up to 1; stop on a newer version. Require an HTTPS asset URL, a safe kebab-case ID, and a compatible MarkEdit version before installation.
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.
- 2mo ago First seen · 243 lines · 25 tokens per session scan A 0354b81f3219
markedit is a skill published in the GitHub repository MarkEdit-app/MarkEdit-skill (6 stars, last pushed 2mo ago), licensed MIT. It adds 25 tokens to every session and 3,065 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
markedit compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| markeditMarkEdit-app/MarkEdit-skill | Skill | 6 | 2mo ago | MIT | A | 25 | Claude Code, Codex |
| orbit-notionnexu-io/open-design | Skill | 106k | yesterday | Apache-2.0 | A | 117 | Claude Code, Codex |
| instrument-data-to-allotropeanthropics/knowledge-work-plugins | Skill | 35k | 2d ago | Apache-2.0 | A | 123 | Claude Code |
| apify-youtube-transcript-scrapersickn33/agentic-awesome-skills | Skill | 49k | yesterday | MIT | A | 48 | Claude Code |
| legal-holdanthropics/claude-for-legal | Skill | 9.9k | 3d ago | Apache-2.0 | A | 68 | Claude Code |
| ppt-reviewOrkas-AI/Orkas | Skill | 9.0k | yesterday | MIT | A | 2 | Claude Code, Codex |
| feishuHmbown/CodeWhale | Skill | 41k | 6d ago | MIT | A | 33 | Claude Code, Codex |