Cosmos Hub RPC Endpoint

Fast, flat-rate Cosmos Hub RPC node provider — free tier, no KYC, HTTP & WebSocket.

Cosmos Hub is the flagship chain of the Cosmos ecosystem and the original home of the Inter-Blockchain Communication protocol (IBC). Secured by the ATOM token under CometBFT (Tendermint) consensus, it offers ~6-second blocks with instant, single-slot finality.

Network: Cosmos Hub

Type: Non-EVM

Slug: cosmos

Native token: ATOM (Cosmos)

Block time: ~6 seconds

Finality: Instant (single-slot, deterministic CometBFT finality)

Mainnet: March 13, 2019

Category: Layer 1 (Cosmos SDK, CometBFT proof-of-stake)

About Cosmos Hub

Cosmos Hub launched in March 2019. It runs the Gaia application built on the Cosmos SDK, with a bonded proof-of-stake validator set (the top ~180 validators by stake). CometBFT consensus gives deterministic finality — once a block is committed it cannot be reverted, so there is no probabilistic confirmation wait.

The Hub pioneered IBC, the standard that lets sovereign Cosmos chains transfer tokens and messages trustlessly. It also offers Interchain Security (ICS), where the Hub's validator set can secure consumer chains. Developers query the Hub over Tendermint RPC, the Cosmos REST (LCD) API, and gRPC.

Common Use Cases on Cosmos Hub

IBC transfers and cross-chain routing across the Cosmos ecosystem
ATOM staking and delegation
Interchain Security for consumer chains
Governance over the Cosmos Hub
Liquid staking and DeFi via connected chains

Cosmos Hub Ecosystem

The Hub connects to hundreds of IBC-enabled chains including Osmosis, Celestia, Injective, dYdX, Neutron, and Stride. Neutron and Stride are among the consumer chains secured via Interchain Security.

HTTP Endpoint

https://rpc.swiftnodes.io/rpc/cosmos?key=YOUR_API_KEY

WebSocket Endpoint

wss://rpc.swiftnodes.io/ws/cosmos?key=YOUR_API_KEY

Quick Start: Connect to Cosmos Hub

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/cosmos?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"getHealth","id":1}'

Note: Cosmos Hub uses its own RPC methods. Refer to the official Cosmos Hub documentation for available methods.

Bridging to Cosmos Hub

Native IBC handles transfers between Cosmos chains. For Ethereum and other ecosystems, Axelar, Wormhole, and Gravity Bridge route assets in and out of the Cosmos Hub.

Features of SwiftNodes for Cosmos Hub

Multiple load-balanced upstream nodes for high availability
Health-checked every 60 seconds with automatic failover
Free tier available — no credit card or KYC required
Flat-rate monthly pricing with no per-request fees
HTTP and WebSocket support
One API key works across all 75+ supported chains, including Cosmos Hub

Rate Limits

Plan	Price	HTTP req/s	WS msg/s
Free	$0/mo	2	1
Starter	$49/mo	50	25
Growth	$89/mo	150	75
Scale	$149/mo	300	150
Pro	$249/mo	500	250

Frequently Asked Questions: Cosmos Hub

Does Cosmos Hub have an EVM chain ID?

No — Cosmos Hub is non-EVM. It identifies its network by a chain-id string ('cosmoshub-4' for mainnet) rather than an EVM numeric chain ID.

What endpoints does SwiftNodes expose for Cosmos?

Tendermint RPC (for blocks, transactions, and broadcasting), the Cosmos REST/LCD API, and gRPC — covering the standard ways Cosmos SDK chains are queried.

What is IBC?

Inter-Blockchain Communication is the Cosmos standard for trustless transfers and messaging between sovereign chains. The Cosmos Hub was the first production deployment of IBC.

Ready to start building on Cosmos Hub? Connect your wallet and get a free API key in 30 seconds. No email or KYC required.