Ebay Sold Listings

com.compsapiv1.0.0Updated Oct 9, 2026

Real eBay sold listings: 3 years of price history, real accepted Best Offer prices, 8 marketplaces.

VerifiedStreamable HTTPWeb executableData & AnalyticsBusiness & Commerce

Overview

AI-generated overview

Lets an assistant look up real eBay sold listings and price statistics, including accepted Best Offer prices, across eight marketplaces.

What it does
A hosted MCP server exposing a search_sold_listings tool that queries real eBay sold data. It returns price statistics such as average, median, range and best offer share, plus the newest matching sales. Searches can be filtered by time window up to three years, condition, sold price range, eBay category and marketplace, and can include or restrict results to accepted Best Offers.
When to use it
Useful when an assistant needs resale or collectible price comparisons, such as valuing a card, watch or phone, or comparing what an item sells for on different eBay marketplaces. Worth adding when answers should be based on actual sold prices rather than asking prices.
Requirements
A remote streamable HTTP endpoint; no local install. Requires a CompsAPI key sent in the Authorization header as a Bearer token, obtained from the provider's app site. Network access to the endpoint is needed.
Before you install
The Authorization header carries a secret API key; keep it out of shared configuration and logs. The free tier is limited to 100 searches a month, and paid usage may apply beyond that. Queries are sent to a third-party service that is not affiliated with eBay.

Installation

In SourceWeft

  1. Open Ebay Sold Listings 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.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "ebay-sold-listings": {
      "type": "http",
      "url": "https://api.compsapi.com/mcp"
    }
  }
}

README

CompsAPI MCP Server · eBay Sold Listings for AI Agents

Hosted MCP server that gives any AI agent real eBay sold listings: up to 3 years of price history and the real accepted Best Offer price, not the crossed out asking price. Ask for comps in plain language, get structured sold data back.

  • Server URL: https://api.compsapi.com/mcp (streamable HTTP, no install)
  • Auth: your CompsAPI key in the Authorization header, free key at app.compsapi.com (100 searches a month, no card)
  • Docs: compsapi.com/docs

Setup

Claude Desktop, Claude Code, Cursor and any other MCP client that supports remote servers:

json
{  "mcpServers": {    "compsapi": {      "url": "https://api.compsapi.com/mcp",      "headers": { "Authorization": "Bearer sk_live_YOUR_KEY" }    }  }}

Claude Code one-liner:

bash
claude mcp add --transport http compsapi https://api.compsapi.com/mcp --header "Authorization: Bearer sk_live_YOUR_KEY"

Tool

search_sold_listings

Search real eBay sold listings. Returns price statistics (average, median, range, best offer share) plus the newest matching sales.

ParameterDescription
queryWhat to search, e.g. charizard psa 10
daysHow far back, 1 to 1095 (3 years). Default 90.
conditionnew, open_box, refurbished, used, parts
best_offer1 adds real accepted offer prices, only returns accepted offers only
siteeBay marketplace: US (default), UK, DE, FR, IT, ES, CA, AU
categoryeBay category id(s), e.g. 31387 for wristwatches
min_price / max_priceSold price range
pageResult page, newest first

Example prompts once connected:

  • "What does a PSA 10 Charizard actually sell for? Last 90 days."
  • "Median sold price for a Rolex Submariner 126610 this year, accepted offers included."
  • "Compare what iPhone 15 Pro sells for on eBay UK vs US."

Why this data

eBay put sold listings behind a login in 2026 and the public sold search only ever showed 90 days. CompsAPI returns up to 3 years of real sales, including what accepted Best Offers actually closed at. Full REST API with the same data at compsapi.com.

Not affiliated with eBay Inc. eBay is a trademark of eBay Inc.

Source: README.md at commit fdc5475

Tools

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Version history

1
  1. v1.0.0LatestOct 9, 2026