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 danilods/matilha-skills --skill matilha-designgit clone --depth 1 https://github.com/danilods/matilha-skillsWrote 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/danilods/matilha-skills/matilha-design)<a href="https://agentmods.dev/skills/danilods/matilha-skills/matilha-design"><img src="https://agentmods.dev/badge/skills/danilods/matilha-skills/matilha-design/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/danilods/matilha-skills/matilha-design"><img src="https://agentmods.dev/badge/skills/danilods/matilha-skills/matilha-design.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 | $0.00043 | $0.01024 |
| Opus 5 | $0.00022 | $0.00512 |
| Sonnet 5 | $0.00009 | $0.00205 |
| Haiku 4.5 | $0.00004 | $0.00102 |
Grade A, and why
matilha-design 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 11d 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 — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When this fires
User asks "how should this look?", "is this UX good?", "what component to use?", or is about to commit design-level changes. Cross-phase; most useful in Phase 20/30 spec authoring and Phase 40 execution.
Preconditions
- None (works at any phase).
Execution Workflow
-
Pack detection: Inspect the ambient skill list for skills with plugin namespace matching
matilha-*-pack(e.g.,matilha-ux-pack:*,matilha-growth-pack:*,matilha-design-pack:*if installed). Group by plugin namespace. Seeskills/matilha-compose/SKILL.mdfor the canonical detection logic. -
Intent classification: Does the user's design question touch cognitive load, error presentation, forms, accessibility, visual perception, growth-relevant moments (signup, paywall, activation), or broader design-system concerns? Use pack skill descriptions to inform the decision. Classify per pack: yes / no / partial.
-
Route based on intent:
- Narrow intent (e.g., "which form component?", "what error format?"): invoke the single most relevant pack skill directly via the Skill tool. No preamble needed.
- Exploratory intent (e.g., "how should this flow feel?", "is this UX good?"): if
superpowers:brainstormingavailable AND ≥1 pack classified yes, build preamble permatilha-composeStep 4 template, emit it, then invoke brainstorming via Skill tool. - No packs installed OR packs irrelevant: apply core heuristics inline — simplicity (Krug Fato 1), recognition > recall (Weinschenk), progressive disclosure, consistent navigation, 5-rule error format.
-
Emit design guidance linked to the user's current task.
Rules: Do
- Prefer companion-pack skills when available (they carry neuroscience-backed depth).
- Cite sources in core heuristics (Weinschenk, Krug, wiki concept pages).
- Keep advice specific to the user's artifact.
Rules: Don't
- Make subjective "good/bad" claims without evidence.
- Override user's explicit
aesthetic_directionin project-status.md.
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.
- 11d ago First seen · 83 lines · 43 tokens per session scan A cb1ae5ef4c18
matilha-design is a skill published in the GitHub repository danilods/matilha-skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 43 tokens to every session and 1,024 once invoked, about $0.0002 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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