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 HoangNguyen0403/agent-skills-standard --skill common-stitch-designgit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/common-stitch-design)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/common-stitch-design"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-stitch-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/hoangnguyen0403/agent-skills-standard/common-stitch-design"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-stitch-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 | $0.00050 | $0.00854 |
| Opus 5.5 | $0.00020 | $0.00342 |
| Sonnet 5.5 | $0.00010 | $0.00171 |
| Haiku 4.5 | $0.00005 | $0.00085 |
Grade A, and why
common-stitch-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 today.
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 — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Stitch Design
Priority: P1 (HIGH)
Preflight
- Stitch tools (
list_projects,list_screens,get_screen) must be in the tool list. Missing →BLOCKED (stitch-mcp). - Endpoint
https://stitch.googleapis.com/mcp, headerX-Goog-Api-Key. Config added mid-session loads only after restart. Setup: Stitch MCP.
Read
list_screens, then group bytitle: many versions share one title. Confirm the current one with the author; default most recent.- Before opening an image, fetch it to disk without attaching it to the model; verify decoded width and height and create a proportional preview with a longest edge <=1600 px. This is a conservative workflow budget, not a guaranteed model limit.
=w390/=w1280is optional optimization, not a size guarantee. Preserve originals; use the bounded review procedure in Stitch MCP. - Read SVG source as text first. Bound raster output and both browser screenshot dimensions before image ingestion; never request
fullPage. Account for physical pixels (CSS pixels × devicePixelRatio); review tall pages with an overview and separate viewport captures. - A rejected image in a generation/edit response does not prove the backend write failed. Recover IDs, metadata, and completed screens before any retry. If documented tool behavior can embed an oversized image and no host-supported resize/text-only route exists, stop before the write call.
- If a retained conversation image blocks work, query advertised commands and follow OMP image recovery; preserve source screenshots before
/shake images. - Run
node scripts/audit_html.js <dir>. Audit output is evidence; screenshots confirm visual judgement.
Write Safely
- Never overwrite originals. Fix through
generate_variants(creativeRange: REFINE,variantCount: 1) or a new design system. - Explicit approval before
delete_project,update_design_systemon an existing asset, orapply_design_systemto original screens. - New design system:
create_design_systemwiththeme.designMd, thenupdate_design_systemon that new asset. apply_design_systemtakes screen instance ids fromget_project, not screen ids.- Generation takes minutes. On timeout do not retry; poll
get_screenevery 30 s, max 10. - Variant output includes illustration image screens with null
deviceType: skip them. Check device class on the screenshot; aTABLETrequest can returnDESKTOP.
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today Changed · +3 lines 157e933bf2b1
- 22d ago First seen · 57 lines · 50 tokens per session scan A f292ee2de1ce
common-stitch-design is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (581 stars, last pushed yesterday), licensed MIT. It adds 50 tokens to every session and 854 once invoked, about $0.0002 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 2026-10-01.
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