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 skills add gabriele-mastrapasqua/codex-lean-team --skill measured-performancegit clone --depth 1 https://github.com/gabriele-mastrapasqua/codex-lean-teamWrote 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/gabriele-mastrapasqua/codex-lean-team/measured-performance)<a href="https://agentmods.dev/skills/gabriele-mastrapasqua/codex-lean-team/measured-performance"><img src="https://agentmods.dev/badge/skills/gabriele-mastrapasqua/codex-lean-team/measured-performance/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/skills/gabriele-mastrapasqua/codex-lean-team/measured-performance"><img src="https://agentmods.dev/badge/skills/gabriele-mastrapasqua/codex-lean-team/measured-performance.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 | $0.00033 | $0.00178 |
| Opus 5.5 | $0.00013 | $0.00071 |
| Sonnet 5.5 | $0.00007 | $0.00036 |
| Haiku 4.5 | $0.00003 | $0.00018 |
Grade A, and why
measured-performance 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 2mo 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
Define the metric and baseline before changing code.
- Confirm workload, hardware/runtime, warmup, sample count, and correctness criteria.
- Profile or isolate the hot path.
- Choose the smallest plausible optimization.
- Measure before and after using the same method.
- Check correctness, variance, memory, and tail latency.
- Reject changes whose improvement is within noise or whose complexity is not justified.
For C/C++/Rust/CUDA/Metal, also check vectorization, locality, transfers, synchronization, alignment, aliasing, and numerical drift. For Go/Python/TypeScript, adapt to GC, event loops, allocation behavior, I/O, and runtime tooling.
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.
- 2mo ago First seen · 16 lines · 33 tokens per session scan A 4e26363194ae
measured-performance is a skill published in the GitHub repository gabriele-mastrapasqua/codex-lean-team (3 stars, last pushed 3mo ago), licensed MIT. It adds 33 tokens to every session and 178 once invoked, about $0.0001 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 2026-08-31.
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