# API contract · Tag

Explore Runlume articles, insights, and updates about API contract.

> Runlume provides platform capabilities, independent business apps, and professional services that can be combined as needed. Features, allowances, and delivery scope follow the selected plan or service agreement. Business apps can be selected independently; collaboration follows configured integrations and authorization boundaries.

Original page: https://runlume.app/en/blog/tag/api-contract

## [Keep credentials on the server: the runtime model for connecting a business system](https://runlume.app/en/blog/platform-integration-runtime-model)

Developer guides · App integration / Credentials and sessions / API contract

Published：2026-09-19 · Author：Runlume Team

Module credentials, Launch Grant exchange, short-lived instance tokens, member convergence, fail-closed scopes and idempotency ownership: the boundaries the server side must hold when a remote business system connects to Runlume.

## Related pages

- [Platform](https://runlume.app/en/platform)
- [Business apps](https://runlume.app/en/apps)
- [Developers](https://runlume.app/en/developers)
- [About Runlume](https://runlume.app/en/about)