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/hashgraph-online/awesome-codex-plugins/creating-julia-appnpx skills add hashgraph-online/awesome-codex-plugins --skill creating-julia-appgit clone --depth 1 https://github.com/hashgraph-online/awesome-codex-pluginsWrote 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/hashgraph-online/awesome-codex-plugins/creating-julia-app)<a href="https://agentmods.dev/skills/hashgraph-online/awesome-codex-plugins/creating-julia-app"><img src="https://agentmods.dev/badge/skills/hashgraph-online/awesome-codex-plugins/creating-julia-app.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 | $0.00018 | $0.00337 |
| Opus 5 | $0.00009 | $0.00169 |
| Sonnet 5 | $0.00004 | $0.00067 |
| Haiku 4.5 | $0.00002 | $0.00034 |
Grade A, and why
creating-julia-app 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 5d 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.
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
Creating a Julia app
Apps are Julia packages that are intended to be run as "standalone programs" (by e.g. typing the name of the app in the terminal possibly together with some arguments or flags/options). This is in contrast to most Julia packages that are used as "libraries" and are loaded by other files or in the Julia REPL.
A Julia app is structured similar to a standard Julia library with the following additions:
A @main entry point in the package module (see the Julia help on @main for details)
An [apps] section in the Project.toml file listing the executable names that the package provides.
A very simple example of an app that prints the reversed input arguments would be:
# src/MyReverseApp.jl
module MyReverseApp
function (@main)(ARGS)
for arg in ARGS
print(stdout, reverse(arg), " ")
end
return
end
end # module
# Project.toml
# standard fields here
[apps]
reverse = {}
The empty table {} is to allow for giving metadata about the app.
After installing this app one could run:
$ ~/.julia/bin/reverse some input string
emos tupni gnirts
directly in the terminal. See the following link to learn more:
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.
- 5d ago First seen · 51 lines · 18 tokens per session scan A 7b2893f760da
creating-julia-app is a skill published in the GitHub repository hashgraph-online/awesome-codex-plugins (859 stars, last pushed 7d ago), licensed Apache-2.0. It adds 18 tokens to every session and 337 once invoked, about $0.0001 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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