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 jcrabapple/hermes-skills --skill mastodon-admingit clone --depth 1 https://github.com/jcrabapple/hermes-skillsWrote 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/jcrabapple/hermes-skills/mastodon-admin)<a href="https://agentmods.dev/skills/jcrabapple/hermes-skills/mastodon-admin"><img src="https://agentmods.dev/badge/skills/jcrabapple/hermes-skills/mastodon-admin/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/jcrabapple/hermes-skills/mastodon-admin"><img src="https://agentmods.dev/badge/skills/jcrabapple/hermes-skills/mastodon-admin.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 | $0.00050 | $0.05542 |
| Opus 5.5 | $0.00020 | $0.02217 |
| Sonnet 5.5 | $0.00010 | $0.01108 |
| Haiku 4.5 | $0.00005 | $0.00554 |
Grade A, and why
mastodon-admin 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 1mo 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 output to a temp file first, then parse with python3: The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
9 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.
- data/disposable_email_domains.txt 116 KB
- references/api-scopes-and-quirks.md 8.1 KB
- references/extended-reference.md 15 KB
- references/username-signal-design.md 5.0 KB
- scripts/mastodon_reports.py 11 KB runs code
- scripts/mastodon_signups.py 33 KB runs code
- scripts/mastodon_welcome.py 10 KB runs code
- scripts/refresh_signup_blocklists.py 3.7 KB runs code
- scripts/test_signup_classifier.py 6.1 KB runs code
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.
- 1mo ago First seen · 518 lines · 50 tokens per session scan A c595a9cfbc22
mastodon-admin is a skill published in the GitHub repository jcrabapple/hermes-skills (10 stars, last pushed 16d ago), with no licence file. It adds 50 tokens to every session and 5,542 once invoked, about $0.0002 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 2026-09-03.
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