coupon-system vs RefRef
coupon-system is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑18.
coupon-system is a plugin bundle for AI coding tools published by barnburner121. No marketplace we read lists it any more. RefRef is an MCP server published by refref.ai. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-30. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  RefRef | |
|---|---|---|
| Community marketplace barnburner121/claude-plugin-marketplace | Removed on 2026-10-18 Version: 1.0.0 Forks (GitHub): 0 Stars (GitHub): 3 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.2 No figure published Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | coupon-systemno longer listed · | RefRef |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 3 | No figure on GitHub |
| Forks (GitHub) (differs) | 0 | No figure on GitHub |
| Last release (differs) | Not published | 2026-10-15 |
| Where it runs (differs) | On your machine (@barnburner121/plugin-hub-mcp) | Remote server (mcp.refref.ai/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 2 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/barnburner121/claude-plugin-marketplace | Not stated |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-14 | 2026-10-15 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 2 days ago, requires a key |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of coupon-system
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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Create, edit and analyse AIOD Shopify discounts: BOGO, free gift, tiered, volume, bundle, upsell
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Shopify checkout upsells, post-purchase offers, discounts, bundles, validations and gift cards.
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Coupon-code lookup skill for the Caramel public API (no key needed).
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McClipFace finds current coupon codes while your AI shops. Also available as a ChatGPT app.
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Feedico: coupons, deals & products
Free coupons, deals and products with tracked links; no key needed. Add a partner token to earn 65%.
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SumUp payment integrations across terminal and online checkout flows. Build Android and iOS POS apps with SumUp card readers, online checkout with server SDKs and the checkout…
What each says it does
coupon-system
Generate coupon and discount code system
RefRef
Build, launch and manage referral, affiliate and loyalty programs with RefRef from your AI agent.
How to run each
coupon-system
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
RefRef As a remote MCP server
claude mcp add --transport http refref https://mcp.refref.ai/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only RefRef has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: coupon-system · What it can do: RefRef · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.