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About

EchoRelay is a managed runtime for custom API integrations. Describe one integration once: what comes in, the target system, credentials, the retry policy, and how the answer maps back. EchoRelay validates each inbound request, maps it, replies synchronously, passes streams through, fans out to multiple targets, or queues delivery with automatic retry, a dead-letter queue and replay. Every configuration change is versioned. Preview, diff, dry run, schedule, publish and roll back. When a vendor changes their API or rotates a credential, you update the configuration and publish. Deploy nothing. Build and operate each integration through the REST API, an MCP server so an AI agent can do the wiring, or the web panel. Free to start, no card required.

About

Most failed subscription payments don't come back on a retry. Expired cards, 3D Secure requests and generic bank declines need the customer to act, and most customers never notice the payment failed. Rebounce connects to Stripe, Paddle or Square in a few minutes. When a payment fails, it reads the decline code, retries only when a retry can work, and sends the customer a short sequence by email, SMS or WhatsApp with a link to a page where they update the card or confirm 3D Secure. No login needed. The sequence stops the moment the invoice is paid. In our own data, 44% of customers who opened the payment link paid on that page, while automatic retries recovered 5.5%. Also included: card expiry warnings 30 days ahead, weekly recovery reports, and a free 90-day audit of your Stripe account (read-only, no signup). Pricing is flat: Starter $3.50/month, Growth $14/month, Scale $39/month. No percentage of recovered revenue.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software teams that maintain their own API integrations: SaaS products, internal platform teams, and engineering groups carrying custom adapters against vendor APIs with no dedicated integration team.

Audience

SaaS and subscription businesses that bill through Stripe, Paddle or Square and lose revenue to failed card payments. Built for small and mid-size companies, including ones with customers in Latin America who are easier to reach on WhatsApp than by email.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$5
Free Version Supported
Free Trial Not Supported

Pricing

$3.50/month
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

EchoRelay
Founded: 2026
Poland
echorelay.dev

Company Information

Rebounce
Founded: 2026
Brazil
rebounce.dev

Alternatives

Alternatives

FastHook

FastHook

FastHook.io
BetterRetain AI

BetterRetain AI

BetterRetain
EchoCredentialing

EchoCredentialing

HealthStream

Categories

API Management Supported

Categories

API Management Features

Access Control Supported
Analytics Supported
API Design Not Supported
API Lifecycle Management Not Supported
Dashboard Supported
Developer Portal Supported
Testing Management Supported
Threat Protection Not Supported
Traffic Control Supported
Version Control Supported

Integrations

Model Context Protocol (MCP) Supported
Paddle Not Supported
Square Payments Not Supported
Stripe Not Supported

Integrations

Model Context Protocol (MCP) Not Supported
Paddle Supported
Square Payments Supported
Stripe Supported
Claim EchoRelay and update features and information
Claim EchoRelay and update features and information
Claim Rebounce and update features and information
Claim Rebounce and update features and information