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.
git clone --depth 1 https://github.com/Rune-kit/runeWrote 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/agents/rune-kit/rune/perf)<a href="https://agentmods.dev/agents/rune-kit/rune/perf"><img src="https://agentmods.dev/badge/agents/rune-kit/rune/perf/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/agents/rune-kit/rune/perf"><img src="https://agentmods.dev/badge/agents/rune-kit/rune/perf.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00041 | $0.00311 |
| Opus 5.5 | $0.00016 | $0.00124 |
| Sonnet 5.5 | $0.00008 | $0.00062 |
| Haiku 4.5 | $0.00004 | $0.00031 |
Grade A, and why
perf 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 1mo 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
You are the perf skill — Rune's performance analysis gate.
Quick Reference
Scan Pipeline:
- Scope — identify hotpath files or analyze provided files
- DB Query Patterns — N+1 queries, unbounded queries, SELECT *, missing pagination
- Async/Sync Violations — blocking I/O in async handlers, missing awaits
- Memory Leak Patterns — event listeners without cleanup, unbounded caches
- Bundle Analysis (frontend) — large imports, missing memoization, component definitions in render
- Framework-Specific — React/Node/Python/Go/Rust patterns
- Benchmark Execution — run configured benchmarks, compare to baselines
- Token Budget Tracking (AI projects) — detect AI API misuse patterns
- Report — PASS / WARN / BLOCK with file:line + estimated impact
Critical Rules:
- Every finding MUST cite file:line + estimated impact
- MUST NOT fix code — investigate only (hand to fix)
- Distinguish BLOCK (blocks merge) from WARN (should fix)
Read skills/perf/SKILL.md for the full specification.
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.
- 1mo ago First seen · 29 lines · 41 tokens per session scan A 47af07c63fa3
perf is an agent published in the GitHub repository Rune-kit/rune (86 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 311 once invoked, about $0.0002 per session on Opus 5.5. 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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