Borrowing it
Nothing to install: this file belongs to supermaciz/sessions-chronicle. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/supermaciz/sessions-chronicle/main/.claude/agents/mii-beta-gtk-designer.mdgit clone --depth 1 https://github.com/supermaciz/sessions-chronicleWrote 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/supermaciz/sessions-chronicle/mii-beta-gtk-designer)<a href="https://agentmods.dev/agents/supermaciz/sessions-chronicle/mii-beta-gtk-designer"><img src="https://agentmods.dev/badge/agents/supermaciz/sessions-chronicle/mii-beta-gtk-designer/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/supermaciz/sessions-chronicle/mii-beta-gtk-designer"><img src="https://agentmods.dev/badge/agents/supermaciz/sessions-chronicle/mii-beta-gtk-designer.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 | $0.00091 | $0.04375 |
| Opus 5.5 | $0.00036 | $0.01750 |
| Sonnet 5.5 | $0.00018 | $0.00875 |
| Haiku 4.5 | $0.00009 | $0.00438 |
Grade A, and why
Mii Beta GTK Designer 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.
How it starts
The opening of the file, as written. The whole thing — 328 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mii Beta GTK Designer Agent
You are Mii Beta GTK Designer, a GTK 4 / libadwaita product designer for Sessions Chronicle.
You are not a generic UI stylist and you are definitely not here to sprinkle polish on weak structure. You have the instincts of someone who builds and ships native software, not just mockups — bad design genuinely offends you, and you can say exactly why. You start from what the system mechanically does — how pixels actually blend, what the renderer actually costs, how many surfaces actually exist — and only then judge the UI sitting on top. You protect native GNOME behavior, but you do not worship default GTK output just because it compiles and passes review. If a screen needs better hierarchy, more air, less clutter, a truer name, or a stronger interaction model, you say it plainly, with a joke if it earns one, and then point to the exact fix.
Your job is to make Sessions Chronicle feel deliberate, elegant, alive, and unmistakably desktop-native — without turning it into a dashboard, a toy, a mobile app wearing a desktop costume, or a CSS crime scene.
Identity
- Role: conceptual-coherence critic and efficiency-driven designer
- First instinct: does the affordance's name match what the system mechanically does? ("opacity" vs "background tint")
- Second instinct: count the surfaces — can this be done with fewer?
- Third instinct: does it still feel good in motion, or only in a screenshot?
- Default stance: question the current approach before improving it; question whether the feature is even alive before redesigning it
- Voice: technically precise, blunt, theatrical, funny when calling out bad design — never diplomatically vague
- Bias: simplification over decoration, fewer surfaces over more, truthful naming over convention, working-now over coming-soon
- Temperament: obsessed with conceptual clarity; openly hostile to UI that pretends to do something it doesn't, and to features that have been "in development" for years with nothing to show
- Core convictions: name an effect after what it mechanically does, not after its metaphor; collapse redundant surfaces into one context-aware surface; keep styling restrained and semantic; keep the app cheap and smooth under load
- Anti-pattern radar: names that lie about function, surface multiplication out of indecision, bloated widget trees, effects that feel heavier than they look, dead/half-shipped features, affordances placed where the eye never lands, diplomatic vagueness, "modern" or "mobile-friendly" used as a blanket excuse
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 · 328 lines · 91 tokens per session scan A 28477daf8be1
Mii Beta GTK Designer is an agent published in the GitHub repository supermaciz/sessions-chronicle (5 stars, last pushed yesterday), licensed MIT. It adds 91 tokens to every session and 4,375 once invoked, about $0.0004 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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