Broker Price

Community

evanslyhan

broker-price

Multi-platform price research for C2C resale. Search prices across bound platforms using the user's authorized session. Use when user wants to know "what is this worth", "price this", "market price", "询价", or needs a transparency pricing report before listing. Also usable standalone via /broker-price with a product description.

Overview

Publisher	evanslyhan
Repository	`resale-agent-skill-hub`
Skill name	`broker-price`
Stars	97
Forks	11
Bundled files	1
License	MIT
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
1 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by evanslyhan on GitHub. Read the source before you install it.

Installation

Install the Broker Price AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/evanslyhan/resale-agent-skill-hub/tree/main/skills/broker-price
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/evanslyhan/resale-agent-skill-hub.git /tmp/resale-agent-skill-hub
mkdir -p .claude/skills
cp -r /tmp/resale-agent-skill-hub/skills/broker-price .claude/skills/broker-price

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Broker Price in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Broker Price on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Broker Price is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

broker-price: Authenticated Price Research

Searches prices across all bound platforms using the user's own account session — the same search they'd do manually in each app. No web scraping, no anti-bot issues.

Workflow

Receive product info (from broker-recognize or user description)
Build platform-specific search queries
For each bound platform with valid session:
- Search active listings → extract prices, conditions
- Search sold listings → extract actual transaction prices
Calculate:
- Price range (min → max)
- Median active listing price
- Median sold price (preferred metric)
- Market sentiment (seller-favorable / balanced / buyer-favorable)
Recommend price: median of sold comparables (when available), or 5% below active median (when no sold data)
Present transparency report with data sources

Script

bash
python3 scripts/research.py --product product.json
    # Searches all bound platforms, outputs transparency report

Fallback

If session-based search fails (expired session, platform API change), fall back to Claude Code's WebSearch for comparable listings. Results from fallback are clearly labeled as lower-confidence estimates.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

scripts/research.py8 KB

Frequently asked questions

What does the Broker Price AI skill do?

Why use Broker Price on TypingMind?

Because you install it once and use it with any model. Broker Price is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Broker Price in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/evanslyhan/resale-agent-skill-hub/tree/main/skills/broker-price. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Broker Price?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Broker Price?

As many as you like. As long as a model supports skills, you can use Broker Price with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Broker Price AI skill free?

Yes. It is published on GitHub by evanslyhan under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

broker-price: Authenticated Price Research

Workflow

Script

Fallback

Bundled files

Frequently asked questions

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