Borrowing it
Nothing to install: this file belongs to JStaRFilms/deprecated-Takomi_Code. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/JStaRFilms/deprecated-Takomi_Code/master/.agent/skills/prompt-engineering/SKILL.mdgit clone --depth 1 https://github.com/JStaRFilms/deprecated-Takomi_CodeWrote 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/jstarfilms/deprecated-takomi_code/prompt-engineering)<a href="https://agentmods.dev/skills/jstarfilms/deprecated-takomi_code/prompt-engineering"><img src="https://agentmods.dev/badge/skills/jstarfilms/deprecated-takomi_code/prompt-engineering.svg" alt="Measured on agentmods" 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 | $0.00118 | $0.02410 |
| Opus 5 | $0.00059 | $0.01205 |
| Sonnet 5 | $0.00024 | $0.00482 |
| Haiku 4.5 | $0.00012 | $0.00241 |
Grade C, and why
prompt-engineering scanned grade C with 2 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 7d 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://cli.inference.sh | sh && infsh login Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://cli.inference.sh | sh && infsh login 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 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.
- 7d ago First seen · 343 lines · 118 tokens per session scan C f14129b45024
prompt-engineering is a skill published in the GitHub repository JStaRFilms/deprecated-Takomi_Code (3 stars, last pushed 5mo ago), with no licence file. It adds 118 tokens to every session and 2,410 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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