Design Style
#9 — The Stripe for Revenue Retention
Revenue infrastructure for the internet

The Stripe for Revenue Retention

Stripe solved payments. Retentor solves everything after. One API. One integration. Built for developers who build for scale.

REST
API-First
6
SDKs
99.9%
Uptime

What Retentor Does

API-First Everything

Full REST API. Every entity readable, writable, queryable. Consistent, predictable, documented.

Webhooks for Everything

Real-time event delivery. customer.saved, payment.recovered, trial.converted.

SDKs That Feel Native

Node.js, React, React Native, Flutter, Swift, Kotlin. TypeScript-first.

How It Works

1
Get API Key
One-click signup. Key generated instantly.
2
Install SDK
npm install @retentor/server
3
Go live
Agents activate. Revenue protected.

Pricing

Pro
$0
Free up to $2,500 MTR. 1% of MTR above that. All features. All agents. No tiers.
Churn prevention AI agent
Payment recovery AI agent
Trial conversion AI agent
Expansion revenue agent
Multi-channel communications
Visual flow builder
Knowledge base
Full API + SDK access

What People Say

“The API is beautiful. Consistent response shapes, cursor pagination, proper error codes. Developer joy.”

Backend Engineer — Developer Tools

Stripe handles the charge. Retentor handles the keep.

API-first revenue retention. Built for developers.