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Onboarding for engineers integrating with ChaCha — concepts, environments, and a five-minute first request.
Read the intro →API reference
OpenAPI-generated reference for the public surface, including authentication, donations, NGOs, and webhooks.
Browse endpoints →SDKs
Client libraries for TypeScript and Python, plus the plugin SDK for charity-chain-platform.
See SDK packages →Explore the platform
Platform architecture
How the backend, marketing site, mobile app, on-chain program, and supporting services fit together.
Walk the system →Event catalog
AsyncAPI reference for the events that flow between services and out to integrators.
View events →Architecture decisions
ADRs covering the choices behind ChaCha — from CloudNativePG to the Invisible Blockchain principle.
Read the record →Plugins
Build extensions for the ChaCha platform — from custom impact widgets to NGO-specific integrations.
See the plugin guide →Release notes
Platform updates, breaking changes, and announcements as they ship.
Read the latest →Contributing
Editing these docs, proposing ADRs, raising issues, and the public/internal classification rule.
Open the guide →Looking for internal docs?
Runbooks, incidents, infrastructure topology, and security material live on the internal portal at developers.chachain.de and require staff access via Keycloak.