Spec Driven Development
by formulahendry
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer★ 440MITUpdated 14 months ago
Install
Worth
Overview
Description from the maker (original English)
Find what anything is worth: resale value, used and new prices, and where to buy or sell it.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://worth.area21.io/mcp?src=mcp_registryRun this in your terminal
claude mcp add --transport http worth 'https://worth.area21.io/mcp?src=mcp_registry'Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"worth": {
"url": "https://worth.area21.io/mcp?src=mcp_registry"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"worth": {
"type": "http",
"url": "https://worth.area21.io/mcp?src=mcp_registry"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://worth.area21.io/mcp?src=mcp_registryMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account a21ai, which owns the repo
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 32606 servers in this category
- Published to the registry more recently than 70% of the other 32606 servers in this category
- Basic checks equal to or better than 100% of the other 32606 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Worth safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.3) reached the registry 16 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Georgia MCP
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
by desktop-commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud★ 211Updated 2 days ago
Install
Georgia MCP
by abgeo
An MCP server for Georgian public data, read from the organizations that publish it.
Computer or cloudUpdated today
Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
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.
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=claudeCursor
Add to Cursor (deeplink) · web install link, or add to ~/.cursor/mcp.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=chatgptAuthentication: none.
VS Code
Install in VS Code, or add to .vscode/mcp.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
- "What's my Nintendo Switch OLED worth?"
- "Should I buy AirPods Pro 2 new or used?"
- "Where can I sell a Charizard Pokémon card for the most?"
- "Here's a photo of my grandma's lamp. Is it worth anything?"
- "Is $400 a good price for a used iPhone 14 Pro?"
Tools
| Tool | What it does for you |
|---|---|
price_item | What one item is worth from a photo or name: estimate, new and used ranges, confidence |
compare_prices | New vs. used vs. resale, so you know whether to buy used or sell |
where_to_buy_or_sell | Store 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
- Thrifting price guides: what thrift finds are worth
- Reselling for beginners
- How to price yard sale items
- Buying used instead of new
Privacy & support
Website · Privacy · Terms · Support
Listed in the official MCP Registry as io.github.a21ai/worth. Made by Area21 Labs.