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# Building Modules

This repository contains documentation on concepts developers need to know in order to build modules for Cosmos SDK applications.

  1. Introduction to Cosmos SDK Modules
  2. AppModule Interface and Module Manager
  3. Messages and Queries
  4. Msg services - Processing Messages
  5. Query Services - Processing Queries
  6. BeginBlocker and EndBlocker
  7. Keepers
  8. Invariants
  9. Genesis
  10. Module Interfaces
  11. Standard Module Structure
  12. Errors
  13. In-Place Store Migrations
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Introduction to SDK Modules
Modules define most of the logic of SDK applications. Developers compose modules together using the Cosmos SDK to build their...
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