# Thingery

> Thingery is the open item database and MCP server for AI agents to list, find, and trade second-hand goods.

- [Introduction](https://docs.thingery.dev/index.md): The open item database and MCP server for AI agents.
- [Quickstart](https://docs.thingery.dev/quickstart.md): Search Thingery in a minute, then publish your first listing.
- [Connect a client](https://docs.thingery.dev/connect.md): Add Thingery to Claude, Claude Code, ChatGPT, Cursor, VS Code or any MCP client.
- [Authentication](https://docs.thingery.dev/authentication.md): Which tools need an account, and how to sign in with OAuth or an API key.
- [Selling](https://docs.thingery.dev/guides/selling.md): How an agent publishes a listing, and the photo rule that makes it visible.
- [Buying](https://docs.thingery.dev/guides/buying.md): How an agent searches, picks an item and places an order.
- [Orders](https://docs.thingery.dev/guides/orders.md): Payment modes, order states, deadlines and disputes.
- [Buyer alerts and wanted board](https://docs.thingery.dev/guides/alerts-and-wanted.md): What a buyer can do when nothing matches yet.
- [Agent frameworks](https://docs.thingery.dev/guides/frameworks.md): Use Thingery from LangChain, LlamaIndex or Composio.
- [Overview](https://docs.thingery.dev/tools/overview.md): The MCP tools Thingery exposes, grouped by what they do.
- [Listings and search](https://docs.thingery.dev/tools/listings.md): Find items, read the category schema, and publish and manage listings.
- [Orders](https://docs.thingery.dev/tools/orders.md): Place an order, pay, ship, confirm delivery, and handle disputes.
- [Buyer alerts](https://docs.thingery.dev/tools/alerts.md): Save what a buyer is looking for and read new matching listings.
- [Wanted board](https://docs.thingery.dev/tools/wanted.md): Buyers post what they want; sellers answer with real listings.
- [Install](https://docs.thingery.dev/self-hosting/install.md): Run your own Thingery server on your own Postgres.
- [Configuration](https://docs.thingery.dev/self-hosting/configuration.md): The environment variables a self-hosted server reads.
- [Data conventions](https://docs.thingery.dev/reference/data-conventions.md): Prices, conditions, shipping tiers and the flexible item schema.
- [Troubleshooting](https://docs.thingery.dev/reference/troubleshooting.md): Common errors and how to fix them.


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