# simplereferral

> The referral API built for AI coding agents. Add referral links, signup
> attribution, and email invites to any app with one API key and two
> idempotent calls.

Status: private beta, opening Q3 2026. The API, docs, SDK, and MCP server are
not publicly available yet. Join the waitlist at https://simplereferralapp.com/ to get an API key
and the docs the moment the beta opens.

simplereferral owns the referral loop up to money: it mints referral links and
codes, captures signup attribution (binds a new account to its referrer),
sends referrer invites from shared email infrastructure, and reports who
referred whom. It deliberately does NOT handle reward payouts, those are
app-specific, so you decide what a referral is worth.

Every mutating endpoint takes an idempotency key, so retries never double-count.
Every error states exactly what to fix in plain language.

## Try it
- [Live sandbox: drive the real API keyless in the browser](https://simplereferralapp.com/sandbox)

## Available now
- [Waitlist for the private beta](https://simplereferralapp.com/)
- [Referral invite deliverability checker, free tool](https://simplereferralapp.com/tools/deliverability)
- [Referral K-factor calculator, free tool](https://simplereferralapp.com/tools/k-factor)
- [Integration scaffolder for Next, Remix, SvelteKit, or Express, free tool](https://simplereferralapp.com/tools/scaffold)
- [Referral attribution debugger, free tool](https://simplereferralapp.com/tools/debugger)

## Compare
- [simplereferral vs Rewardful](https://simplereferralapp.com/vs/rewardful)
- [simplereferral vs FirstPromoter](https://simplereferralapp.com/vs/firstpromoter)
- [simplereferral vs GrowSurf](https://simplereferralapp.com/vs/growsurf)
- [simplereferral vs Tolt](https://simplereferralapp.com/vs/tolt)

## Facts
- Status: private beta opening Q3 2026; waitlist open now.
- Auth: one API key per app.
- Core calls: create referral link; capture signup with code + idempotency key.
- Integration surface: REST-first; a TypeScript SDK and an MCP server are planned for the beta.
- Scope: attribution and invites yes; reward payouts no.