Upside
Upside is a two-sided commerce platform that connects brick-and-mortar retailers with consumers through personalized cash-back offers on everyday purchases like fuel, groceries, and dining. More than 5 million users have earned over $1B in cash back through its app, while retailers use the Upside Marketplace, Measurement, and Loyalty+ products to drive proven incremental profit. For technology partners, Upside offers a partner-gated, enterprise-ready API that delivers personalized, evergreen offers inside partner apps, though it publishes no public developer portal or self-serve API documentation.
Upside is profiled on the APIs.io network. Tagged areas include Company, Consumer, Cashback, Rewards, and Loyalty.
Upside’s developer surface includes engineering blog, support, and 12 more developer resources.
Kin Score
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 1
Portal, sign-up, and the first successful call
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Source (apis.yml)
Work with this as data
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MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for providers
9 MCP tools reach this
find_providersBrowse and filter every provider in the catalog.get_provider_artifactsEvery artifact this provider publishes, grouped by type.get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.get_provider_toolsEvery MCP tool they ship, with the operation each wraps.get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.get_provider_ratingPRO — composite, band, trend and facet scores.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/providers/upside"
curl "https://apis.io/api/v1/providers?limit=25"
curl "https://apis.io/api/v1/providers/upside/operations?limit=25"
curl "https://apis.io/api/v1/providers/upside/evidence"
Discovery needs no key. Ratings and market analysis are Pro.