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 agentmods add skills/manalkaff/opendesign/make-tweakablenpx skills add manalkaff/opendesign --skill make-tweakablegit clone --depth 1 https://github.com/manalkaff/opendesignWrote 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/manalkaff/opendesign/make-tweakable)<a href="https://agentmods.dev/skills/manalkaff/opendesign/make-tweakable"><img src="https://agentmods.dev/badge/skills/manalkaff/opendesign/make-tweakable.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 | $0.00043 | $0.00468 |
| Opus 5 | $0.00022 | $0.00234 |
| Sonnet 5 | $0.00009 | $0.00094 |
| Haiku 4.5 | $0.00004 | $0.00047 |
Grade A, and why
make-tweakable 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 5d 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 — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Loaded when the user wants in-design controls for toggling variants, swapping colors, editing copy, or flipping feature flags directly inside a design artifact.
What to expose
A small number of high-impact values. Good candidates: one or two key colors, a layout variant toggle, a feature flag, a headline copy field. Do not over-expose. Every additional control raises the cost of the design and dilutes the point.
If the user does not specify what should be tweakable, pick 2–3 interesting things yourself and explain why in the summary.
Where the panel lives
A small floating panel anchored bottom-right. Title it exactly Tweaks so the naming matches any external toggle the host might expose. Hide the panel entirely when tweaks are deactivated — no residual chrome.
Keep the control surface tasteful. Use native inputs (<input type="color">, <select>, <input type="text">, <input type="range">) instead of hand-rolled form components unless the aesthetic absolutely requires them.
Activation protocol
Order matters. Run these steps in this sequence:
- Register the message listener that handles
activateanddeactivatefrom the parent frame. - Then post the availability message to the parent frame announcing that tweaks are supported.
If you post availability first, the host's activate message can land before your handler exists and the toggle silently does nothing.
Deactivation and external sync
When the user closes the panel from inside the design, post a message to the parent so any external toggle flips off in lockstep. The host and the in-design panel must agree on state at all times.
Persistence
Persist tweak state somewhere the host can read back on reload. Pick one that fits the artifact:
- A tagged JSON block inside the source (for single-file HTML artifacts that the host re-serves).
localStoragekeyed by artifact id (for long-lived previews).- A write-back hook the host provides (when the host exposes one).
State the persistence choice in the summary.
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.
- 5d ago First seen · 42 lines · 43 tokens per session scan A b8dced07b7d5
make-tweakable is a skill published in the GitHub repository manalkaff/opendesign (255 stars, last pushed 2mo ago), licensed MIT. It adds 43 tokens to every session and 468 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 2026-08-30.
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