Apps for every store workflow
Extend reviews, marketing, fulfillment, invoices, bundles, sourcing, and operations without rebuilding your store.
LetBuyy app contracts
The third-party app marketplace is frozen pending the named demand trigger and ARB approval. These pages document retained private contracts, not production activation.
Private Contracts
Review retained OAuth, webhook, review, and app-token contracts before public activation.
Commercial Metadata
Model pricing and payout metadata without treating marketplace monetization as launched.
Gateway APIs
Build against source-backed REST, webhook, and app-store contracts in approved sandbox flows.
OAuth 2.0
Secure authentication with OAuth 2.0 — users grant specific permissions to your app.
Frozen Extensions
Extension and function declarations remain review metadata until the recorded capability seam is retired or re-scoped.
Documentation
Read the retained contracts and human-approval boundaries before building against them.
How it works
1
Register
Create a developer account record for private review flows.
2
Build
Use source-backed APIs and docs only in approved sandbox/private flows.
3
Submit
Submit an app record for automated checks and human review.
4
Activate
Public catalog activation is outside the current launch scope and is not claimed here.
Review the frozen seam
Use these contracts for approved private work only until public activation is approved.
Create Review Account →The LetBuyy app advantage
LetBuyy covers the core store workflows. For everything specialized, there are marketplace apps.
Reviewed before merchants install
Listings are checked for app scopes, billing clarity, data handling, support paths, and merchant-facing setup.
Recommendations for real growth
Find apps by category, compatibility, install context, and the workflows merchants need next.