Reference
Managed secret providers
Operator-owned API keys for backend services across supported providers.
Alter ships with 69 pre-configured managed-secret templates covering AI tooling, REST-native databases and search engines, analytics, communication, payments, infrastructure, error tracking, ERP, HR, and developer tools. Each provider has a setup guide with the property table, credential creation flow, and SDK code example.
Adding a template to an application creates a provider there, addressed by its slug. The template only picks the injection format, host rules and setup copy; several providers can share one template, and the slug tells them apart.
For the end-to-end flow, see Provision secrets for backend services. For the conceptual model, see Managed secrets.
For any header-based credential not in this catalog, use the Custom template — configure header name, injection format (Bearer {token}, Token {token}, Key {token}, …), and multi-header or query-parameter injection as needed — see Connect a custom API.