cosmos-client

JavaScript/TypeScript REST API client for Cosmos SDK blockchain. Current stable version is 0.42.14, with the first two version digits matching the targeted Cosmos SDK release (0.42.x). Release cadence follows Cosmos SDK releases for minor versions, with independent patch updates. Key differentiators: provides full TypeScript types, generates protobuf definitions on-the-fly, supports account generation from mnemonics, transaction building and signing, and broadcasting. It uses Long for 64-bit integers and requires a running Cosmos SDK node with REST API enabled.