Worth

io.github.a21aiPublished by GitHub account a21aiv0.1.3Updated Oct 26, 2026

Find what anything is worth: resale value, used and new prices, and where to buy or sell it.

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingBusiness & Commerce

Overview

AI-generated overview

Remote MCP server that lets an assistant estimate what an item is worth, compare new, used and resale prices, and find where to buy or sell it.

What you can do
  • Estimate an item's value from a name or photo, with new and used ranges and a confidence score
  • Compare new, used and resale prices side by side to judge savings or earnings
  • Get store and marketplace links for buying new, buying used or selling
  • Return results as an interactive price card in supporting clients
When to use it
Useful for thrift flipping, reselling, pricing yard-sale or collectible items, or deciding whether to buy used instead of new. Handy when you want a quick second opinion on whether a listed price is fair.
Requirements
A remote Streamable HTTP endpoint; no account, sign-in, API key or environment variables are needed. Works in clients that support remote MCP servers, such as Claude, Cursor, ChatGPT developer mode, VS Code or other MCP clients.
Before you install
Prices come from live listings and are estimates, not offers, so treat them as guidance rather than a valuation. The service is free with daily lookup limits. Photos or item names you submit are sent to a third-party service, so check its privacy terms before sharing images of personal items.

Installation

In SourceWeft

  1. Open Worth in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.a21ai%2Fworth/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "worth": {
      "type": "http",
      "url": "https://worth.area21.io/mcp?src=mcp_registry"
    }
  }
}

README

[Worth]

Worth

Never overpay, never undersell.
Ask your AI "what's it worth?" about anything (thrift finds, collectibles, electronics, vintage) and get its resale value, used price and new price, plus links to the best place to buy or sell.

[Add to Cursor] [Install in VS Code]

[Worth price card in Claude]

What you get

  • A fair price in seconds. Name it or snap a photo; get an estimate with a confidence score.
  • Know if used is worth it. See new vs. used vs. resale side by side, and how much you save or can earn.
  • The best place to buy or sell. Direct links to stores and marketplaces, matched to what you want to do.

Great for thrift flipping, reselling for beginners, pricing yard sale items, or deciding whether to buy used instead of new. No account, no sign-in. Prices come from live listings and are estimates, not offers.

Install (one click or one line)

Server URL (Streamable HTTP, no auth): https://worth.area21.io/mcp

Claude

Settings → Connectors → Add custom connector → paste:

https://worth.area21.io/mcp?src=claude

Cursor

Add to Cursor (deeplink) · web install link, or add to ~/.cursor/mcp.json:

json
{  "mcpServers": {    "worth": { "url": "https://worth.area21.io/mcp?src=cursor" }  }}

ChatGPT

Settings → Apps & Connectors → Advanced → enable Developer mode → Create → MCP server URL:

https://worth.area21.io/mcp?src=chatgpt

Authentication: none.

VS Code

Install in VS Code, or add to .vscode/mcp.json:

json
{  "servers": {    "worth": { "type": "http", "url": "https://worth.area21.io/mcp?src=vscode" }  }}

Any other MCP client

https://worth.area21.io/mcp?src=github

Try asking

  1. "What's my Nintendo Switch OLED worth?"
  2. "Should I buy AirPods Pro 2 new or used?"
  3. "Where can I sell a Charizard Pokémon card for the most?"
  4. "Here's a photo of my grandma's lamp. Is it worth anything?"
  5. "Is $400 a good price for a used iPhone 14 Pro?"

Tools

ToolWhat it does for you
price_itemWhat one item is worth from a photo or name: estimate, new and used ranges, confidence
compare_pricesNew vs. used vs. resale, so you know whether to buy used or sell
where_to_buy_or_sellStore and marketplace links to buy new, buy used, or sell

All tools are read-only. Results render as an interactive price card (MCP Apps, ui://worth/price-card.html). Free daily lookups.

Free guides from Worth

Privacy & support

Website · Privacy · Terms · Support

Listed in the official MCP Registry as io.github.a21ai/worth. Made by Area21 Labs.

Source: README.md at commit 8384c1e

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v0.1.3LatestOct 21, 2026

Score

75% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.