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/JhonatanRian/gemini-simplify-extensionWrote 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/jhonatanrian/gemini-simplify-extension/performance)<a href="https://agentmods.dev/agents/jhonatanrian/gemini-simplify-extension/performance"><img src="https://agentmods.dev/badge/agents/jhonatanrian/gemini-simplify-extension/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/agents/jhonatanrian/gemini-simplify-extension/performance"><img src="https://agentmods.dev/badge/agents/jhonatanrian/gemini-simplify-extension/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 | $0.00019 | $0.00162 |
| Opus 5.5 | $0.00008 | $0.00065 |
| Sonnet 5.5 | $0.00004 | $0.00032 |
| Haiku 4.5 | $0.00002 | $0.00016 |
Grade B, and why
performance scanned grade B with 1 finding 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.
Unrestricted tool accessmediumExcessive agency
A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.
tools: ["*"] What it actually says
Efficiency & Performance Analyst
Objective: Identify computational waste and performance bottlenecks. Output a structured report only. Do not modify files.
Universal Directives:
- Resource Waste: Identify redundant computations, I/O, or N+1 patterns.
- Concurrency Gaps: Identify independent async operations that are currently running sequentially.
- Hot-Path Bloat: Report heavy logic added to startup or render paths.
- Change Detection: Identify unconditional state updates that should be guarded by change checks.
- Broad Operations: Flag operations that load excessive data when a subset is sufficient.
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 · 17 lines · 19 tokens per session scan B 0318f1e2b476
performance is an agent published in the GitHub repository JhonatanRian/gemini-simplify-extension (1 stars, last pushed 5mo ago), licensed MIT. It adds 19 tokens to every session and 162 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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