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 rjyo/moshi-skill --skill moshi-best-practicesgit clone --depth 1 https://github.com/rjyo/moshi-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/rjyo/moshi-skill/moshi-best-practices)<a href="https://agentmods.dev/skills/rjyo/moshi-skill/moshi-best-practices"><img src="https://agentmods.dev/badge/skills/rjyo/moshi-skill/moshi-best-practices/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/rjyo/moshi-skill/moshi-best-practices"><img src="https://agentmods.dev/badge/skills/rjyo/moshi-skill/moshi-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket warn
- Snyk fail
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 | $0.00118 | $0.04201 |
| Opus 5 | $0.00059 | $0.02100 |
| Sonnet 5 | $0.00024 | $0.00840 |
| Haiku 4.5 | $0.00012 | $0.00420 |
Grade D, and why
moshi-best-practices scanned grade D with 3 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 9d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://herdr.dev/install.sh | sh Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
Herdr's own integrations and `moshi-hook install` both write agent hook config (for example into `~/.claude/settings.json`). They are non-destructive and are meant to coexist — run both when using Herdr with Moshi. Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://herdr.dev/install.sh | sh 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
1 file 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.
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.
- 9d ago First seen · 357 lines · 118 tokens per session scan D 32ef3c6ad930
moshi-best-practices is a skill published in the GitHub repository rjyo/moshi-skill (28 stars, last pushed 1mo ago), with no licence file. It adds 118 tokens to every session and 4,201 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it D with 3 findings (downloads and executes remote code, reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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