Underpriced AI MCP Server

by underpricedai Your server? Claim it

answering

Underpriced AI is answering right now. Last checked 11 min ago. It exposes 6 tools.

Resale prices for secondhand items from real eBay sold listings, with comps and a worth-it verdict.

Uptime history 10 days of history · worst day 53%

10 days agonow

79.1%

Uptime 24h

72 of 91 checks

Tools

read from the server

403 ms

Response time

average over 24h

open, no key

Access

streamable-http

Underpriced AI does not always answer

Over the last week it answered 61.9% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add underpriced-ai --transport http https://underpricedai.com/api/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "underpriced-ai": {
      "url": "https://underpricedai.com/api/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.underpriced-ai]
url = "https://underpricedai.com/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "underpriced-ai": {
      "url": "https://underpricedai.com/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "underpriced-ai": {
      "url": "https://underpricedai.com/api/mcp"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

buy

buy_credits

Ways to pay for Underpriced AI scans. Without a choice it lists the credit packs (credits never expire), pay as you go ($0.25 per photo scan on a monthly bill, no cap), and for a signed-in user their balance. With a pack it returns a Stripe Checkout link for that user; with PAY_AS_YOU_GO it returns the link that puts a card on file so scans just run from then on. Anonymous callers get the pricing page link.

ebay

list_on_ebay

For a signed-in user: turns a photo scan from price_item (account.scanId) into an inventory item with a draft eBay listing on their Underpriced AI account (title, list price defaulting to the market price, condition, description) and returns the link where they review and publish it in the app, plus whether eBay is connected and the connect link if not. It never publishes anything; publishing happens in the app after the user checks the listing.

price

price_item

What a secondhand item sells for on eBay US: a calibrated estimate with a range, the recent real sold comps behind it, three list prices (fast, market, patient) with the 14-day sell chance, the net after eBay fees, and a worth-it verdict when you pass what the user would pay. Give image_url (a public https link to a photo) whenever one exists; a description alone works but reads less.

scan

get_scan_result

For a signed-in user: the finished result for a scan on their account, in the same shape as price_item, once the sold comps have landed in the background. Call it with the account.scanId a photo price returned when that result said comps were still loading (about 20 seconds later), or to re-read any saved scan.

sold

get_sold_comps

The most recent real eBay US sales for a search query (brand, model or pattern, a few specific words), with the count, median and quartiles. Use when the user wants to see what actually sold and for how much.

worth

worth_it

Net after eBay fees and a verdict (worth it / thin / pass) for an expected sale price and what the user would pay. Pure arithmetic; use price_item first when the sale price is unknown.

Endpoints

URL	Transport	State	Latency	Checked
https://underpricedai.com/api/mcp	streamable-http	answering	258 ms	11 min ago

Alternatives to Underpriced AI

same job, measured the same way

LowlandData Resale & Secondhand

by adrienhq

GDPR-clean secondhand listings and sold comps for resale pricing research. No seller personal data.

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LowlandData Resale & Secondhand

by lowlanddata

GDPR-clean secondhand listings and sold comps for resale pricing research. No seller personal data.

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willmehr

by taneron

Search willhaben.at for second-hand listings and rank the underpriced ones

31 installs/wk local only

Ezflipai

by ezflipai

Appraise resale items from photos and write listings for eBay, Mercari, OfferUp and more.

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govauctions.app

by govauctions

Live listings, sold prices and resale scores from GovAuctions.app, the public surplus-auction site.

8 tools answering

CompSniper

by compsniper

eBay, Poshmark US and Mercari US listings, sold-price summaries, comparisons and research exports.

answering

Prelo

by listprelo

Drafts eBay listings from your item photos: title, description, price and condition.

answering

Depop Scraper & Monitor: New Listings, Price & Sold Alerts

by nero-engine

Depop listings for searches or URLs, with alerts on new listings, price drops and sales.

answering

Underpriced AI — questions

Answers built from our own checks of this server.

What can Underpriced AI do?

It exposes 6 tools, read directly from the server on our last check. Among them: buy_credits, get_scan_result, get_sold_comps, list_on_ebay, price_item, worth_it. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Underpriced AI working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 72 of 91 checks got a reply (79.1%), average response time 403 ms. The bar chart above shows every period we have measured.

How do I connect Underpriced AI?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Underpriced AI need an API key?

No. Underpriced AI completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Underpriced AI?

It answers our handshake in 403 ms on average, which is faster than 37% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.