mukan-ignite/docs/versioned_docs/version-v29/07-packages/chainregistry.md

sidebar_position	title	slug
3	Chain Registry Types (chainregistry)	/packages/chainregistry

Chain Registry Types (chainregistry)

The chainregistry package defines strongly-typed Go structs for Cosmos chain-registry data (chain.json and assetlist.json).

For full API details, see the chainregistry Go package documentation.

When to use

• Parse chain-registry JSON into typed values.
• Build tooling that reads chain metadata (APIs, fees, staking tokens, assets).
• Validate or transform registry documents before writing them back.

Key APIs

• type Chain struct{ ... }
• type APIs struct{ ... }
• type APIProvider struct{ ... }
• type AssetList struct{ ... }
• type Asset struct{ ... }
• type Fees struct{ ... }
• type Staking struct{ ... }
• type Codebase struct{ ... }
• type ChainStatus string
• type ChainType string

Common Tasks

• Decode chain.json data into a Chain value and inspect RPC/REST metadata.
• Decode assetlist.json into AssetList to access denom units and logo URIs.
• Use enum-like types (ChainStatus, NetworkType, ChainType) to keep metadata checks explicit.

Basic import

import "github.com/ignite/cli/v29/ignite/pkg/chainregistry"