sync-shadcn

A set of rules for syncing shadcn documentation into Plate, a rich-text editor framework, while planning and tracking the work.

In plain words
What is it for?
Checking, planning, reviewing, and applying updates from shadcn docs to Plate docs.
Why use it?
It helps keep copied documentation aligned with newer upstream versions and makes the sync process reviewable.

Cursor rule for Codex

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.

agentmods
npx agentmods add rules/udecode/plate/sync-shadcn
Clone the repo
git clone --depth 1 https://github.com/udecode/plate

Made for: Codex.

Per session 136 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 11,743 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00136 $0.11743
Opus 5 $0.00068 $0.05872
Sonnet 5 $0.00027 $0.02349
Haiku 4.5 $0.00014 $0.01174

Measured yesterday against content hash 967bf2721879, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sync-shadcn 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 yesterday.

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.

.agents/rules/sync-shadcn.mdc · 1,210 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. yesterday First seen · 1,210 lines · 136 tokens per session scan A 967bf2721879

Subscribe to this mod's changes

sync-shadcn is a cursor rule published in the GitHub repository udecode/plate (16,542 stars, last pushed 2d ago), with no licence file. It adds 136 tokens to every session and 11,743 once invoked, about $0.0007 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.