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/eser/rules/tooling-standardsnpx skills add eser/rules --skill tooling-standardsgit clone --depth 1 https://github.com/eser/rulesWhat 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 | $0.00037 | $0.00223 |
| Opus 5 | $0.00018 | $0.00112 |
| Sonnet 5 | $0.00007 | $0.00045 |
| Haiku 4.5 | $0.00004 | $0.00022 |
Grade A, and why
tooling-standards 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 3d 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
Tooling Standards
Standards for Deno runtime, JSR registry, and project configuration.
Quick Start
deno install # install dependencies
deno fmt # format code
deno lint # lint code
deno test # run tests
Key Principles
Deno: Use deno install/fmt/lint/test instead of npm commands
Config files:
package.jsonfor dependencies and scriptstsconfig.jsonfor TypeScriptdeno.jsononly for fmt/lint settings
Registry: Prefer jsr.io over npm. Use npm:@jsr/ prefix in package.json
Packages: JSR when available, npm when no JSR alternative exists
References
See rules.md for complete guidelines with examples.
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.
- 3d ago First seen · 36 lines · 37 tokens per session scan A 6feaa9fc2e27
tooling-standards is a skill published in the GitHub repository eser/rules (53 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 37 tokens to every session and 223 once invoked, about $0.0002 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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