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 agentmods add skills/alexandermattturner/agent-glovebox/markdown-blocknpx skills add AlexanderMattTurner/agent-glovebox --skill markdown-blockgit clone --depth 1 https://github.com/AlexanderMattTurner/agent-gloveboxWhat 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 | $0.00084 | $0.00409 |
| Opus 5 | $0.00042 | $0.00204 |
| Sonnet 5 | $0.00017 | $0.00082 |
| Haiku 4.5 | $0.00008 | $0.00041 |
Grade A, and why
markdown-block 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.
What it actually says
Markdown Block Skill
Wrap the markdown you want the user to copy in a single fenced code block tagged markdown.
Fence rules—escape inner code blocks
Triple-backtick fences cannot nest: an inner fence prematurely closes the outer one and breaks the copy block.
Rule: the outer fence must use strictly more backticks than the longest backtick run anywhere inside the content.
| Inner content contains | Outer fence to use |
|---|---|
| no backtick fences | ``` |
``` (3 backticks) |
```` |
```` (4 backticks) |
````` |
Scan the content first, find the longest backtick run, then add at least one more backtick to the outer fence.
Example
User asks: “Give me a copyable markdown snippet for a README install section.”
Respond with a 4-backtick fence because the inner content has a 3-backtick block:
# Install
Run the following:
```bash
pnpm install
```
Other escaping notes
- Tildes (
~~~) are an alternate fence—apply the same “more than the longest inner run” rule if you choose them instead of backticks. - Indented (4-space) code blocks inside the markdown need no escaping.
- Do not add commentary inside the fence. Put any explanation outside the block so the user copies clean markdown.
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.
- yesterday First seen · 51 lines · 84 tokens per session scan A 67b41ee717f0
markdown-block is a skill published in the GitHub repository AlexanderMattTurner/agent-glovebox (57 stars, last pushed today), licensed Apache-2.0. It adds 84 tokens to every session and 409 once invoked, about $0.0004 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 2026-08-30.
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