MCP App Store
by KeenEthics

Overview

CompSniper helps people make faster, better resale and sourcing decisions with real completed eBay marketplace data. Search completed sales for a product, receive compact listing rows with title, sold price, shipping, condition, sold date, seller, and URL, and get cleaned price intelligence including median, p25, p75, realistic ranges, sample size, currency, and raw-versus-cleaned evidence. Compare multiple products or the same product across eBay marketplaces. For deeper research, Max Mode runs an asynchronous sold-comps sweep and provides a signed CSV export when complete. The connector uses OAuth 2.0 so each user authorizes their own CompSniper account and quota. It reads public marketplace sold data through CompSniper's first-party API and is not affiliated with eBay. It does not access a user's unrelated files, full conversation, Claude credentials, or OpenAI credentials.

Tools

compare_marketplaces

ChatGPT
Compare what one item sells for across two to eight eBay marketplaces (US, UK, Germany, France, Italy, Spain, Canada, Australia), each in its local currency. Use when the user asks where an item sells for more or about international prices. Each marketplace checked uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

compare_products

ChatGPT
Compare completed-sale price summaries for two to twenty items side by side, for example deciding which product holds its value better or is the better flip. Use when the user asks to compare items. Each item uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

get_account_usage

ChatGPT
Show the user's CompSniper plan, monthly search quota, searches used and remaining, and billing period dates. Use when the user asks about their plan or usage. Does not use any quota and changes nothing.

get_price_summary

ChatGPT
Get a quick price answer for one item from completed eBay sales: cleaned median, typical range (25th to 75th percentile), min, max, and sample size, without individual listings. Use when the user wants a single value or price range rather than a list of sales. Accessories and mismatched listings are excluded before the summary is calculated. Each call uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

get_remaining_quota

ChatGPT
Give a short answer to how many CompSniper searches the user has left this month and when the quota resets. Use when the user asks how many searches remain. Does not use any quota and changes nothing.

search_active_listings

ChatGPT
List items currently for sale on eBay with asking prices and demand signals (watchers, units sold, bids, offers, time left). Use when the user asks what an item is listed for right now or how much competition there is. Asking prices are not sale prices; for value questions use search_sold_comps or get_price_summary. Up to 240 listings per call across eight eBay marketplaces. Each call uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

search_mercari_listings

ChatGPT
Search public Mercari US listings, either sold items (default) or items currently for sale, with price, condition and link. Use when the user asks specifically about Mercari prices. US marketplace only; for eBay data use the eBay tools. Each call uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

search_multiple_products

ChatGPT
Get completed-sale price summaries for a list of up to 20 different items in one request, for example pricing a lot or an inventory list. Use when the user gives several items to value at once. Each item is priced independently, so one failure does not affect the others. Each item uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

search_sold_comps

ChatGPT
Find what an item actually sold for: returns recent completed eBay sales (sold price, shipping, condition, sale date, listing link) plus a cleaned price summary (median, range, sample size). Use when the user asks what something sells for, is worth, or wants recent sold examples. Do not use for current asking prices (use search_active_listings). Covers eight eBay marketplaces, up to 240 sales per call; accessories and mismatched listings are filtered out. Each call uses one search from the user's monthly CompSniper quota. Read-only: it does not buy, sell, list, or change anything.

compare_marketplaces

Claude

compare_products

Claude

export_sold_comps

Claude

get_account_usage

Claude

get_api_status

Claude

get_max_search_results

Claude

get_price_summary

Claude

get_remaining_quota

Claude

search_multiple_products

Claude

search_sold_comps

Claude

Example Prompts

Click any prompt to copy it.

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