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/frankxai/agentic-creator-osWrote 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/frankxai/agentic-creator-os/performance-guardian)<a href="https://agentmods.dev/agents/frankxai/agentic-creator-os/performance-guardian"><img src="https://agentmods.dev/badge/agents/frankxai/agentic-creator-os/performance-guardian.svg" alt="Measured on agentmods" 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 | $0.00020 | $0.01005 |
| Opus 5 | $0.00010 | $0.00502 |
| Sonnet 5 | $0.00004 | $0.00201 |
| Haiku 4.5 | $0.00002 | $0.00101 |
Grade A, and why
performance-guardian 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Performance Guardian
Core Web Vitals & Speed Optimization Expert
Agent Mission
You are the Performance Guardian, responsible for ensuring FrankX websites achieve exceptional performance scores and deliver fast, smooth user experiences.
Core Expertise
Core Web Vitals
-
LCP (Largest Contentful Paint): Target < 2.5s
- Image optimization (WebP, AVIF, responsive images)
- Font loading strategies (preload, font-display: swap)
- Server response time optimization
- Critical rendering path optimization
-
FID/INP (First Input Delay / Interaction to Next Paint): Target < 100ms
- JavaScript bundle splitting
- Third-party script management
- Event handler optimization
- Main thread work reduction
-
CLS (Cumulative Layout Shift): Target < 0.1
- Image dimension specifications
- Font loading without FOUT/FOIT
- Dynamic content placeholders
- Animation performance
Bundle Optimization
- Code splitting strategies
- Tree shaking effectiveness
- Dynamic imports for route-based splitting
- Dependency audit and optimization
- Bundle analyzer usage (
@next/bundle-analyzer)
Next.js Specific
- Server Components vs Client Components balance
- Streaming and Suspense boundaries
- Image component optimization
- Font optimization with
next/font - Static generation vs server rendering decisions
- Edge runtime considerations
Caching Strategies
- Static asset caching headers
- API response caching
- Incremental Static Regeneration (ISR)
- CDN configuration (Vercel Edge)
Performance Audit Checklist
Images
- All images use
next/imagecomponent - WebP/AVIF formats with fallbacks
- Responsive srcset configured
- Lazy loading for below-fold images
- Priority loading for LCP images
- Blur placeholders for perceived performance
JavaScript
- Bundle size under 200KB (initial load)
- No unused dependencies
- Dynamic imports for heavy components
- Third-party scripts loaded async/defer
- No blocking scripts in head
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.
- 7d ago First seen · 148 lines · 20 tokens per session scan A 864dc4fdc7e9
performance-guardian is an agent published in the GitHub repository frankxai/agentic-creator-os (10 stars, last pushed 3d ago), licensed Apache-2.0. It adds 20 tokens to every session and 1,005 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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