enjoy_player: Skill for Claude Code

.agents/skills/flutter-add-widget-preview/SKILL.md

flutter-add-widget-preview is a skill for Claude Code, Codex from baizhiheizi/enjoy_player. It costs 36 tokens per session (1,324 once invoked), scanned A, original, AGPL-3.0.

A Flutter development tool for adding interactive previews of app widgets, which are reusable parts of a Flutter interface. The previews use the project's previews.dart system.

In plain words
What is it for?
Use it when creating widgets or updating screens that need consistent design and interactive testing.
Why use it?
It helps developers inspect and test new or changed interface components without relying only on the full application screen.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is baizhiheizi/enjoy_player's own configuration. It tells Claude Code and Codex how to work on enjoy_player itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything enjoy_player configures →

Reuse

Borrowing it

Nothing to install: this file belongs to baizhiheizi/enjoy_player. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/baizhiheizi/enjoy_player/main/.agents/skills/flutter-add-widget-preview/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/baizhiheizi/enjoy_player

Made for: Claude Code, Codex.

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 flutter-add-widget-preview

README.md
[![agentmods](https://agentmods.dev/badge/skills/baizhiheizi/enjoy_player/flutter-add-widget-preview/github.svg)](https://agentmods.dev/skills/baizhiheizi/enjoy_player/flutter-add-widget-preview)
Your own site
<a href="https://agentmods.dev/skills/baizhiheizi/enjoy_player/flutter-add-widget-preview"><img src="https://agentmods.dev/badge/skills/baizhiheizi/enjoy_player/flutter-add-widget-preview/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.

agentmods 80×15 button for flutter-add-widget-preview

Your own site · 80×15
<a href="https://agentmods.dev/skills/baizhiheizi/enjoy_player/flutter-add-widget-preview"><img src="https://agentmods.dev/badge/skills/baizhiheizi/enjoy_player/flutter-add-widget-preview.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,324 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00036 $0.01324
Opus 5.5 $0.00014 $0.00530
Sonnet 5.5 $0.00007 $0.00265
Haiku 4.5 $0.00004 $0.00132

Measured 2mo ago against content hash 88cfeb7084e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

flutter-add-widget-preview 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 2mo 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.

.agents/skills/flutter-add-widget-preview/SKILL.md · 146 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 2mo ago First seen · 146 lines · 36 tokens per session scan A 88cfeb7084e7

Subscribe to this mod's changes

flutter-add-widget-preview is a skill published in the GitHub repository baizhiheizi/enjoy_player (19 stars, last pushed today), licensed AGPL-3.0. It adds 36 tokens to every session and 1,324 once invoked, about $0.0001 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 2026-08-31.

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