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 The-Utopia-Studio/skills --skill efecto-social-mediagit clone --depth 1 https://github.com/The-Utopia-Studio/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/the-utopia-studio/skills/efecto-social-media)<a href="https://agentmods.dev/skills/the-utopia-studio/skills/efecto-social-media"><img src="https://agentmods.dev/badge/skills/the-utopia-studio/skills/efecto-social-media/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/the-utopia-studio/skills/efecto-social-media"><img src="https://agentmods.dev/badge/skills/the-utopia-studio/skills/efecto-social-media.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 | $0.00083 | $0.06689 |
| Opus 5.5 | $0.00033 | $0.02676 |
| Sonnet 5.5 | $0.00017 | $0.01338 |
| Haiku 4.5 | $0.00008 | $0.00669 |
Grade A, and why
efecto-social-media 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 — 573 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Efecto — Social Media Design Guide
Design social media assets — Instagram, YouTube, TikTok, Twitter/X, LinkedIn, Pinterest, Facebook — using the Efecto design tool. Proper sizing, bold typography, and platform-specific best practices.
Setup
This skill requires the Efecto MCP server. Check if it's available by looking for tools like create_session, add_section, or get_document in your tool list.
If Efecto tools are NOT available, install the MCP server:
Claude Code
claude mcp add efecto -- npx -y @efectoapp/mcp
Cursor
Add to .cursor/mcp.json:
{
"mcpServers": {
"efecto": {
"command": "npx",
"args": ["-y", "@efectoapp/mcp"]
}
}
}
Windsurf / VS Code / Other MCP Clients
{
"mcpServers": {
"efecto": {
"command": "npx",
"args": ["-y", "@efectoapp/mcp"]
}
}
}
Once installed, you'll have access to 46 design tools plus a standalone image search tool. The MCP server connects your agent to the Efecto design canvas at efecto.app.
How It Works
- Your agent creates an Efecto session via MCP (
create_session) - You open the returned design URL in your browser
- The agent pushes design commands — you see every change live
- Iterate with natural language until the design is perfect
Using Efecto Tools — Quick Reference
Session Workflow
Every design starts with a session:
create_session label: "Instagram Carousel"
Returns { sessionId, designUrl }. Tell the user to open the URL, then poll session_status until browserConnected: true.
Building Social Media Designs
The primary workflow is: create artboard → add sections with JSX → refine with updates.
# 1. Create an artboard (Instagram post example)
create_artboard name: "Slide 1" width: 1080 height: 1080 backgroundColor: "#111827" className: "flex flex-col"
# 2. Add content with JSX
add_section parentId: "<artboard-id>" jsx: '<section className="flex flex-col items-center justify-center gap-8 p-16 w-full h-full">
<h1 className="text-7xl font-extrabold text-white text-center leading-none">Stop designing like it's 2020</h1>
<p className="text-xl text-gray-400 font-medium">Swipe for 5 rules -></p>
</section>'
# 3. Duplicate artboard for carousel slides
duplicate_artboard artboardId: "<artboard-id>" newName: "Slide 2"
# 4. Read state and batch-update the duplicate
get_document
batch_update updates: [
{ nodeId: "abc", textContent: "01" },
{ nodeId: "def", textContent: "White space is not wasted space" }
]
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 · 573 lines · 83 tokens per session scan A 98e053ae8cd7
efecto-social-media is a skill published in the GitHub repository The-Utopia-Studio/skills (7 stars, last pushed today), licensed Apache-2.0. It adds 83 tokens to every session and 6,689 once invoked, about $0.0003 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 2026-09-05.
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