Agent Integration Sandbox Verifier

Verify AI-written integration code with real idempotency and concurrency checks

Problem

Agent-generated integration code returns HTTP 200 locally and gets shipped, but nobody checks whether a duplicate event creates two refunds, whether four concurrent triggers collapse into one, or whether approval steps get skipped. Developers ship blind and pay for rollbacks later.

Solution

A managed tunnel exposes the local app to a cloud replayer that injects duplicate webhooks, concurrent triggers, slow callbacks and edge amounts, then emits an archivable verification receipt. Developers add a few lines of config, run it before commit, and paste the receipt into the PR.

Users

Indie developers and small backend teams using AI coding agents to write payment and integration code

MVP

CLI spins up tunnel and injects dependencies; built-in scenarios for duplicate events, concurrency, slow callbacks; shareable verification receipt page; Stripe-compatible webhook signatures; only Node and Python at launch

Revenue

Pay-per-verification plus team subscription with receipt archive and history diff; free tier of 20 runs/month

Why now

AI agents multiplied integration code output while verification remained a blind spot; a tunnel plus scenario engine needs no platform resources and ships in weeks