Free Cosmos RPC (ATOM)

Discover Cosmos, a blockchain designed for interoperability. Build cross-chain decentralized applications using its RPC gateway.

99.99%

24/7

FREE

RPC Gateway

Connect to Cosmos RPC

Access reliable, enterprise-grade RPC endpoints that power your dApp with ultra-low latency and 99.9% uptime.

Connect to Cosmos Gateway

Make your first RPC call on Cosmos's Blockchain Gateway.

Mainnet

Explorer

Rosetta API

https://cosmos-mainnet.gateway.tatum.io

gRPC over https

https://cosmos-mainnet.gateway.tatum.io/cosmos

Tendermint JSON-RPC

https://cosmos-mainnet.gateway.tatum.io/tendermint

Tendermint REST API

https://cosmos-mainnet.gateway.tatum.io/tendermint

Testnet

Explorer

gRPC over https

https://cosmos-testnet.gateway.tatum.io/cosmos

Tendermint JSON-RPC

https://cosmos-testnet.gateway.tatum.io/tendermint

Tendermint REST API

https://cosmos-testnet.gateway.tatum.io/tendermint

* Rate limit enabled - perfect for testing and development. For production, we recommend to Upgrade.

Ready for production?

Get 200 requests/second, priority support and advanced blockchain features.

Global Load Balancer

Route to nearest node

Batch RPC Calls

Multiple requests at once

Archive Nodes

Historical blockchain data

Debug & Trace

Advanced debugging

Advanced Analytics

Usage & performance

Bring Your Own RPC

Custom RPC gateways

Upgrade

Get Free API Key

Increase your limit and access all Cosmos features in Tatum Development Platform.

Get API Key How to authenticate

Accessible to Everyone

No signup. No paywalls. Just RPC that works. Great ideas come from everywhere.

Our Mission

With love by Tatum

Blockchain Data

Indexed Cosmos Data Insights

Complete on-chain data access for Cosmos. Query wallets, tokens, NFTs, and transaction history with lightning-fast APIs - no need to run your own nodes.

Get Token Exchange Rates

Check exchange rates for tokens and fiat on Cosmos.

1 ATOM=? USD

About Cosmos

Cosmos Blockchain RPC documentation serves as a comprehensive guide for developers to interact with the Cosmos network, enabling them to build and manage decentralized applications (dApps) on the Cosmos ecosystem. The documentation provides detailed information on available RPC endpoints, methods, and parameters necessary for performing tasks such as querying blockchain data, managing accounts, and broadcasting transactions. Cosmos is designed for interoperability and scalability, making it ideal for developers looking to build cross-chain decentralized applications.

Tatum Blog & Updates

Learn More About Cosmos

Discover guides, tutorials, and insights about Cosmos development

What's new at Tatum on Cosmos?

May 15, 2024 Added

Cosmos (new RPC Offering)

🚀 Get Started | Documentation | Official website | Block explorer

FAQ

Frequently Asked Questions

Everything you need to know about Cosmos RPC endpoints

Quick Answer: What is Cosmos RPC?

Cosmos RPC (Remote Procedure Call) is an interface that allows developers to interact with the Cosmos blockchain. It enables you to read data, send transactions, and deploy smart contracts programmatically using standard JSON-RPC methods. Our free tier provides 5 requests per minute with no registration required, perfect for testing and development. For production applications, upgrade to Tatum Premium for 200 requests per second and enterprise-grade reliability.

What is Cosmos RPC?

How do I connect to Cosmos using these RPC endpoints?

Simply copy the RPC endpoint URL from above and configure it in your Web3 library (ethers.js, web3.js), wallet (MetaMask, Trust Wallet), or development tool (Hardhat, Truffle). The endpoint works immediately with no registration required for the free tier.

What are the rate limits for free Cosmos RPC?

Free tier RPC endpoints are limited to 5 requests per minute. This is perfect for testing and development. For production applications, we recommend upgrading to Tatum Premium which offers 200 requests per second with no daily limits.

When should I upgrade to Premium?

Consider upgrading to Premium when you're moving to production, need higher rate limits (200 req/sec), require 99.9% uptime SLA, want access to archive nodes for historical data, or need advanced features like batch RPC calls, debug/trace methods, and priority support.

Is Cosmos RPC free forever?

Yes! Our free tier Cosmos RPC endpoints are free forever with 5 requests per minute. This tier is perfect for learning, testing, and small projects. There are no hidden fees or time limits on the free tier.

What happens if I exceed the free tier rate limit for Cosmos RPC?

If you exceed 5 requests per minute on the free tier Cosmos RPC, you'll receive an HTTP 429 (Too Many Requests) error. This is a standard rate limiting response. To avoid this, you can upgrade to Tatum Premium which offers 200 requests per second with no daily limits, perfect for production applications.

Can I use these Cosmos RPC endpoints with MetaMask?

Yes! You can configure MetaMask to use our Cosmos RPC endpoints. Simply copy the endpoint URL from above, go to MetaMask Settings > Networks > Add Network (or edit existing), and paste the RPC URL. This works with all EVM-compatible blockchains including Cosmos.

Are the Cosmos RPC endpoints secure?

Yes, all our Cosmos RPC endpoints use HTTPS encryption and follow enterprise-grade security practices. They're powered by Tatum's infrastructure which maintains 99.99% uptime and is trusted by thousands of developers worldwide.

What's the difference between Cosmos mainnet and testnet RPC endpoints?

Mainnet endpoints connect to the live Cosmos blockchain where real transactions occur with real assets. Testnet endpoints connect to a separate testing network with free test tokens. Always test your dApp on Cosmos testnet before deploying to mainnet.

How do I troubleshoot Cosmos RPC connection errors?

If you're experiencing connection errors with Cosmos RPC, check: 1) The RPC endpoint URL is correct, 2) You're not exceeding rate limits (5 req/min for free tier), 3) Your network allows HTTPS connections, 4) The Cosmos network is currently operational. For persistent issues, check our status page or contact support.

What's the difference between mainnet and testnet?

Mainnet is the live Cosmos blockchain where real transactions occur with real assets. Testnet is a separate network used for testing and development with free test tokens. Always test your dApp on testnet before deploying to mainnet.

Can I use these endpoints in production?

Free tier endpoints can be used in production for low-traffic applications (under 5 req/min). For production apps with higher traffic, we strongly recommend Tatum Premium for guaranteed uptime, faster rate limits, and enterprise SLA.

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