Who it is for
Online shoppers who check for a discount or a rebate before completing an order.
Cash back, coupons and rewards lookups while shopping
Overview
Refermate answers shopping questions in ChatGPT using the rewards data it maintains. For a given retailer or purchase it can return cash back rates, coupon codes, and referral or sign-up routes that carry a reward.
A few other categories sit alongside the discount lookups. Alternative products can be surfaced for an item under consideration, independent Shopify merchants can be pulled up rather than only large retailers, and in-store receipt offers cover spending that happens in a shop rather than at an online checkout.
Each of these is a lookup, so the purchase itself still happens at the retailer.
Online shoppers who check for a discount or a rebate before completing an order.
Receipt-based in-store offers and independent Shopify listings sit alongside the usual coupon and cash back data.
Availability
Refermate is listed in the ChatGPT apps directory only. Refermate LLC has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
Nearby
Product recommendations from an Indonesian retailer
ChatGPT
Coupon lookup for online stores
ChatGPT
Swiss property search for homes and flats
ChatGPT
DNS, IP reputation, AS data and Lightning Network lookups
Claude
Dealer inventory search for Rolf Automobile
ChatGPT
Course breakdowns and pacing plans for races
ChatGPT
This is an independent catalogue entry compiled by Node8 from Refermate's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Refermate LLC, and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.