post-card

post-card is a plugin for Claude Code from vidhunnan/agentic-skills. Its manifest loads nothing; the 1 skill it bundles cost 111 tokens per session together, scanned A, original, MIT.

A post-design plugin that renders a chosen visual plan into standalone HTML frames at real platform dimensions, with optional PNG output when a browser is available.

In plain words
What is it for?
Use it to prepare consistent Instagram or Threads post frames from an approved visual direction.
Why use it?
It makes social-post layouts reusable and reviewable while stopping the visuals from adding claims the post itself rejected.

Plugin for Claude Code

Install

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.

Claude Code
/plugin marketplace add vidhunnan/agentic-skills
agentmods
npx agentmods add plugins/vidhunnan/agentic-skills/post-card
Clone the repo
git clone --depth 1 https://github.com/vidhunnan/agentic-skills

Made for: Claude Code.

Wrote 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.

agentmods badge for post-card

README.md
[![agentmods](https://agentmods.dev/badge/plugins/vidhunnan/agentic-skills/post-card.svg)](https://agentmods.dev/plugins/vidhunnan/agentic-skills/post-card)
Your own site
<a href="https://agentmods.dev/plugins/vidhunnan/agentic-skills/post-card"><img src="https://agentmods.dev/badge/plugins/vidhunnan/agentic-skills/post-card.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 111 tokens a session between them.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

post-card 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 4d 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.

skills/post-card/.claude-plugin/plugin.json · 9 lines

What it actually says

{
  "name": "post-card",
  "description": "Renders a post's visual plan into self-contained HTML frames at real dimensions, rasterised where a browser exists — from a direction you chose, and never stating what the post declined to claim.",
  "version": "0.1.0",
  "author": {
    "name": "Vidhunnan Murugan"
  }
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 111 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

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.

  1. 4d ago First seen · 9 lines scan A a7a0e62488e1

Subscribe to this mod's changes

post-card is a plugin published in the GitHub repository vidhunnan/agentic-skills (2 stars, last pushed 4d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.