Cosmos RPC
What is Cosmos?
Cosmos is a decentralized network of interoperable blockchains, often called the “Internet of Blockchains.” Built with the Cosmos SDK, it lets developers create scalable, application-specific chains while the Inter-Blockchain Communication (IBC) protocol enables secure asset and data transfers across them. This design allows each blockchain to remain sovereign yet connected, fostering a more efficient and collaborative ecosystem.
Interacting With Cosmos APIs
Cosmos nodes expose gRPC and REST interfaces that allow developers to interact with the blockchain programmatically. This means you can query balances, transactions, and state; broadcast transactions; access staking, governance, and distribution data; and monitor validators, network status, and other chain activity.
You can connect by running your own Cosmos node with gRPC/REST enabled, or by using a hosted provider such as Quicknode, which offers reliable, low-latency access without the need to manage infrastructure.
However, because Cosmos chains are modular, some endpoints or behaviors may differ depending on the network. The Quicknode Cosmos documentation is continuously updated, but we recommend cross-referencing with the official Cosmos SDK documentation for the latest API details.
Make Cosmos API Calls
The quickest way to start building on Cosmos is to create a Quicknode endpoint and send your first request.
Quicknode provides managed Cosmos endpoints, offering:
- High reliability — globally distributed infrastructure designed to minimize downtime
- Archive data — full historical state for in-depth queries
- Enhanced performance — optimized latency and request handling for production-grade apps
请访问“快速入门”页面，创建您的端点并发送第一个请求。
支持的网络
Quicknode provides access to multiple Cosmos networks.
Quicknode's Cosmos endpoints now provide archive data access starting from block height 5200791, which corresponds to the beginning of the Cosmoshub-4 chain. Please note that data from previous chain versions (Cosmoshub-1, Cosmoshub-2, and Cosmoshub-3) is not available.
To query historical data, use the x-cosmos-block-height header with REST API requests or specify the height parameter with Tendermint API requests:
Cosmos REST API Example:
curl --location 'https://docs-demo.cosmos-mainnet.quiknode.pro/cosmos/bank/v1beta1/balances/cosmos1t6rlgf80jd8tanpnnvmmxfqdcm9cn7wctrs7hk' \
--header 'x-cosmos-block-height: 5200791'
Tendermint API Example:
curl --location 'https://docs-demo.cosmos-mainnet.quiknode.pro/block?height=5200791'
Complete reference for developers building on Cosmos with Quicknode:
快速入门
Get started with Cosmos quickly. Follow our step-by-step quickstart to set up your endpoint and make your first API request.
提供商端点
Learn how to configure and manage your Cosmos endpoints for optimal performance and reliability.
API 概述
了解受支持的 API、网络、Quicknode 产品以及增强的 API 功能，用于构建功能强大的应用程序。
市场
探索并集成来自 Quicknode 应用商店的强大插件和工具，以增强您的 Web3 应用程序。
终端安全
通过身份验证、白名单和最佳安全实践来保护您的终端设备。
错误代码
Understand common error codes and troubleshooting steps for Cosmos API requests.