Preface

When faced with piles of old phones at home or at the workstation, boxes of clutter before moving, many people directly ask Large Language Models (LLMs), “How should I deal with this?” Models often ramble: sometimes they only recommend Xianyu (Idle Fish), other times they omit donation and recycling options, and they rarely combine data wiping, fraud prevention, and time costs into a single response.

The “Second-hand Disposal Guide” is an Agent Skill maintained by community publisher user_70c2f807 on SkillHub (coordinates @user_70c2f807/second-hand-disposal-guide, current version 1.0.2, category life-service). It integrates idle item assessment, disposal method comparison, and operational reminders into SKILL.md. This enables the Agent to provide answers using a fixed workflow and output template when users mention idle item disposal, second-hand sales, donations, or similar topics. The Skill is marked with requires_api_key=false and does not depend on any additional API keys.

What is this

One-sentence positioning: Helps users evaluate the residual value of idle items, recommends among resale, donation, recycling, and disposal, and provides operational advice for various channels.

Maintainer and Source: Community source (community), published by user_70c2f807. The SkillHub page displays a score of 100,000 and 842 downloads (statistics are based on SkillHub).

Explicitly excluded scenarios: It does not cover completing second-hand transactions on behalf of users, posting listings, professional appraisal, or large-scale recycling coordination. It should be distinguished from requirements for “second-hand transaction matching” or “moving services.”

Core Features

The following capabilities are derived from the descriptions in SKILL.md within the Skill package.

  1. Trigger Scope: Used when users mention idle item disposal, second-hand sales, donation, second-hand disposal, declutter, donate, or ask how to handle old items. It is not used for second-hand transaction matching, door-to-door recycling services, or moving itself.
  2. Value and Path: Estimates a residual value range based on item type, condition, functionality, and market demand, comparing four methods: resale, donation, recycling, and disposal.
  3. Channels and Operations: Recommends platforms or channels for different items (e.g., Xianyu, Zhuanzhuan, AtRecycle, donation and used clothing recycling pathways) and provides advice on listing, pricing, photography, and descriptions.
  4. Safety and Compliance Reminders: Emphasizes that valuations are for reference only, that it does not participate in actual transactions, and that platform rules may change. It requires data wiping for electronic devices and provides fraud prevention tips for transactions.
  5. Structured Output: Outputs a “Disposal Plan” according to a template, including value range estimates, comparison of multiple disposal methods, resale tips (if applicable), and safety reminders.

The Skill also includes built-in explanations for common misuses (e.g., overestimating residual value, selling without clearing data, spending too much time on low-value items) and FAQs (discount ranges, choosing between Xianyu and Zhuanzhuan, used clothing donation channels, handling large furniture, etc.) for the Agent to reference in conversations.

Installation and Activation

The following describes how to install via the SkillHub CLI to the skills directory recognized by the current Agent. When installing, you must use --dir to point to the corresponding client’s skills path; if installed to the default ./skills/, some environments will not load it automatically.

  1. Check if skillhub is available on your local machine:
command -v skillhub && skillhub --version

If not installed, follow the official SkillHub installation documentation for a full installation or CLI-only installation (see https://skillhub.cn/install/skillhub.md).

  1. Install this Skill (namespace and slug based on SkillHub search results):
skillhub install second-hand-disposal-guide --namespace user_70c2f807 --dir <your skills directory>

Alternatively, you can instruct the Agent to install the full coordinates following the official instructions:

Please install `@user_70c2f807/second-hand-disposal-guide` according to https://skillhub.cn/install/skillhub.md.
  1. Common client skills directories (excerpted from SkillHub installation documentation):
  • Cursor: ~/.cursor/skills/
  • Claude Code: ~/.claude/skills/
  • Codex: ~/.codex/skills/ or .agents/skills/ under the project

After installation, restart or refresh the Agent according to your client’s requirements to load the new Skill. This Skill does not require an API Key configuration.

Typical Usage

Once enabled, users can simply describe their scenario in natural language. The Agent should organize the response following the three-step workflow defined in the Skill (Understand Item → Assess Value → Operational Guidance). The examples from the official SKILL.md are as follows and can be reproduced directly.

How to handle old phones

Upon user inquiry, the Agent should assess the value, recommend resale or recycling channels, and write down precautions (including data wiping).

Too many old clothes, don’t want to throw them away but no one wants them

It should recommend donation channels and used clothing recycling methods (examples in the Skill include community recycling bins, Alipay “White Whale”, Fei Mao Yu, etc., and remind users to wash them before donating).

Need to handle a batch of idle items before moving

It should first classify items and then provide batch disposal suggestions for each category.

How much money can these things still sell for

It should provide a residual value range based on the item type and state, noting that it is for reference only.

How to sell quickly on Xianyu

It should answer by combining the Skill’s tips on titles, pricing, photography, and descriptions, while retaining reminders about fraud prevention and potential changes in platform rules.

Regarding output format, the Skill requires the use of a fixed “Disposal Plan” template (including condition, value range, comparison of multiple methods, suggestions, and time cost hints) to facilitate horizontal comparison for users regarding resale, donation, recycling, and disposal.

Applicable Scenarios and Notes

Who is it for

  • Individual users who need a one-time comparison of “Sell / Donate / Recycle / Throw away” options within a conversation.
  • Scenarios where it is desired to uniformly emphasize privacy wiping, fraud prevention, environmental protection, and time costs on the Agent side.
  • Developers using clients that support Skill directories (such as Cursor, Claude Code, Codex) and are willing to manage skill packages via SkillHub.

Limitations and Pitfalls

  • Valuations and “sell in about X days” are estimates only; actual results depend on the market and buyer offers. For luxury goods and collectibles, users should be guided towards professional appraisal.
  • The Skill does not provide listing on behalf of users or participate in transactions; users still need to operate on the platforms themselves.
  • The discount ratios and platform names in the FAQ will change with the market. Responses should note that current platform rules prevail.
  • Metadata scraped by SkillHub and displayed download counts/scores may update over time. Reference data should be based on the SkillHub page.

Conclusion

The “Second-hand Disposal Guide” converges idle item disposal from arbitrary Q&A into executable steps, multi-scheme comparisons, and a unified output format. It is suitable for hanging on Agents that support Skills to handle daily decluttering and sorting issues.

Official SkillHub Page: https://www.skillhub.cn/skills/user_70c2f807/second-hand-disposal-guide
API Metadata URL: https://api.skillhub.cn/user_70c2f807/second-hand-disposal-guide