cosmos

Skill based on Cosmos SDK, generated from sources/cosmos. Doc path: sources/cosmos/docs/docs/, sources/cosmos/README.md, and sources/cosmos/x/.

The Cosmos SDK is a modular framework for building application-specific blockchains. Applications are composed of modules that own state (via keepers), expose Msg and Query services (Protobuf/gRPC), and plug into the app lifecycle (genesis, BeginBlock, EndBlock, upgrades). Use this skill when implementing or wiring SDK modules, keepers, services, depinject, or migrations.

Core References

Topic	Description	Reference
Modules intro	Role of modules, main components, composability and capabilities	core-modules-intro
Module manager	AppModule interfaces, BasicManager, Manager, execution order	core-module-manager
Messages and queries	Msg/Query types, gRPC services, legacy paths, protobuf	core-messages-queries
Keeper	Type definition, store access, inter-module access, methods	core-keeper
Genesis	GenesisState, DefaultGenesis, ValidateGenesis, Init/ExportGenesis	core-genesis
App anatomy	App type, constructor, InitChainer, PreBlocker, Begin/EndBlocker	core-app-anatomy
BaseApp and store	ABCI, routers, volatile states; multistore, KVStore, IAVL	core-baseapp-store

Features

Topic	Description	Reference
Msg services	Implementing Msg service, validation, state transition, events	features-msg-services
Query services	gRPC Query implementation, module_query_safe	features-query-services
depinject	Module config proto, ProvideModule, app wiring	features-depinject
Upgrades	ConsensusVersion, in-place migrations, RegisterMigration	features-upgrade

Best Practices

Topic	Description	Reference
Errors	Registration, wrapping, ABCI helpers	best-practices-errors
Module structure	Recommended folder and file layout	best-practices-module-structure