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/muthuspark/solid-audit/ispnpx skills add muthuspark/solid-audit --skill ispgit clone --depth 1 https://github.com/muthuspark/solid-auditWhat 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 | $0.00015 | $0.01988 |
| Opus 5 | $0.00008 | $0.00994 |
| Sonnet 5 | $0.00003 | $0.00398 |
| Haiku 4.5 | $0.00002 | $0.00199 |
Grade A, and why
isp 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 235 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Trigger
This skill activates when the user runs /isp (optionally with a file path argument, e.g. /isp src/interfaces/worker.py).
Scope Detection
Determine which files to analyze using this priority order:
- Argument — If the user provided a file or directory path after
/isp, use that directly. - Git staged — Run
git diff --cached --name-only. If output is non-empty, use those files. - Git unstaged — Run
git diff --name-only. If output is non-empty, use those files. - Ask user — If no git diff is available, ask for a file or directory path.
Always skip: *.lock, package-lock.json, yarn.lock, pnpm-lock.yaml, Gemfile.lock, composer.lock, **/migrations/**, **/__generated__/**, **/fixtures/**, **/*.min.js
ISP Fix Logic
Detection
An interface/ABC violates ISP when it forces implementors to provide methods they don't actually use. Look for:
-
Fat ABC/Protocol/interface:
- Python:
abc.ABCortyping.Protocolwith 6+ abstract methods where a concrete implementor stubs ≥ half withpassorraise NotImplementedError - TypeScript:
interfacewith 6+ methods where an implementing class throwsnew Error("not supported")for multiple methods - Java:
interfacewith multiple methods where an implementing class throwsUnsupportedOperationException - Go:
interfacetype that is larger than what any single caller actually needs - C#:
interfacewith multiple methods where a class throwsNotImplementedException - Kotlin:
interfacewith multiple methods where a class usesTODO()or throwsUnsupportedOperationException - Ruby: module with multiple methods raising
NotImplementedErrorin classes that only use a subset - PHP:
interfacewith multiple methods where a class throwsBadMethodCallException
- Python:
-
Mixed responsibilities in one interface: The interface has methods from two or more logically distinct domains (e.g., both
print()andscan()andsend_email())
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.
- yesterday First seen · 235 lines · 15 tokens per session scan A d8050677224f
isp is a skill published in the GitHub repository muthuspark/solid-audit (5 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 15 tokens to every session and 1,988 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 2026-08-31.
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