How do I install the Cosmos skill?

Run npx skillmds@latest add hairyf/cosmos in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Cosmos safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Cosmos?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Cosmos free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Cosmos?

hairyf (@hairyf) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Cosmos by hairyf — Agent Skill

Name: Cosmos
Rating: 4.2 (5 reviews)
Author: hairyf

File contents

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

---name: cosmosdescription: Cosmos SDK module development—modules, keepers, Msg/Query services, genesis, app wiring, upgrades, and structure.---> 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](references/core-modules-intro.md) || Module manager | AppModule interfaces, BasicManager, Manager, execution order | [core-module-manager](references/core-module-manager.md) || Messages and queries | Msg/Query types, gRPC services, legacy paths, protobuf | [core-messages-queries](references/core-messages-queries.md) || Keeper | Type definition, store access, inter-module access, methods | [core-keeper](references/core-keeper.md) || Genesis | GenesisState, DefaultGenesis, ValidateGenesis, Init/ExportGenesis | [core-genesis](references/core-genesis.md) || App anatomy | App type, constructor, InitChainer, PreBlocker, Begin/EndBlocker | [core-app-anatomy](references/core-app-anatomy.md) || BaseApp and store | ABCI, routers, volatile states; multistore, KVStore, IAVL | [core-baseapp-store](references/core-baseapp-store.md) |## Features| Topic | Description | Reference ||-------|-------------|-----------|| Msg services | Implementing Msg service, validation, state transition, events | [features-msg-services](references/features-msg-services.md) || Query services | gRPC Query implementation, module_query_safe | [features-query-services](references/features-query-services.md) || depinject | Module config proto, ProvideModule, app wiring | [features-depinject](references/features-depinject.md) || Upgrades | ConsensusVersion, in-place migrations, RegisterMigration | [features-upgrade](references/features-upgrade.md) |## Best Practices| Topic | Description | Reference ||-------|-------------|-----------|| Errors | Registration, wrapping, ABCI helpers | [best-practices-errors](references/best-practices-errors.md) || Module structure | Recommended folder and file layout | [best-practices-module-structure](references/best-practices-module-structure.md) |

Frequently asked questions

Cosmos