Cosmos Nodes and ATOM RPC Explorer

Connect to the best Cosmos RPC nodes with 99.95% uptime via NOWNodes. Get reliable Cosmos API endpoints for any network in minutes — with a free tier available.

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Products

Dedicated

Shared

Networks

Mainnet

API Tools

WSS

Advanced API tools

Advanced APIs for Cosmos and all supported networks — from real-time WebSocket streams to deep historical and indexed data.

Real-time WebSocket access on supported networks.
Subscribe to new blocks, transactions, and events without polling.

Access full blockchain history on supported networks.
Query historical states and logs beyond pruned node limits.

Advanced tracing and debugging methods on supported networks.
Inspect transactions, internal calls, and execution paths.

High-level indexed blockchain data via a unified API. Access addresses, transactions, balances, and blocks without raw RPC calls.

Flexible Cosmos API infrastructure

Clear pricing and shared infrastructure with no hidden limits or unexpected restrictions for Cosmos.

No RPS limits

There are no predefined RPS limits on paid plans. Throughput scales dynamically based on cluster capacity, without artificial throttling.

Flexible pricing

Plans for different budgets — from shared access to dedicated nodes. Combine tariffs to optimize costs without sacrificing performance.

Geo-balanced infrastructure

Requests are served through geo-distributed, load-balanced node clusters. Automatic failover maintains availability if nodes go offline.

120+ Blockchains

One RPC provider — 120+ blockchains. We regularly add new chains, including by request from our users. Check out our crypto node list.

99,95% Uptime

Reliable performance under any load — with smart load balancing. We ensure stable performance and deliver on our SLA.

24/7 Support

Our support team consists of experienced technical experts. With a clear SLA, we guarantee help, with first responses in under 3 minutes.

Production starts here

Focus on your product — we handle Cosmos maintenance, scaling and availability.

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FAQ

What is a Cosmos node provider?

A Cosmos node provider delivers managed blockchain infrastructure that gives developers instant access to the Cosmos network without the complexity of running and maintaining their own servers. Instead of handling node synchronization, storage, updates, and monitoring, teams can connect to reliable hosted RPC endpoints and focus on building their applications.

What is a Cosmos RPC node?

A Cosmos RPC node provides Remote Procedure Call (RPC) access to the Cosmos blockchain, allowing applications to communicate directly with the network. Developers can query blocks, transactions, balances, validator data, broadcast transactions, and retrieve blockchain information through standard RPC requests. RPC endpoints are the primary way wallets, explorers, exchanges, and dApps interact with Cosmos.

Do I need to run my own Cosmos node?

Running your own Cosmos node is unnecessary for most applications. Self-hosting requires continuous synchronization, infrastructure maintenance, monitoring, security updates, and operational resources. Using a managed Cosmos RPC provider like NOWNodes offers the same blockchain access while significantly reducing infrastructure overhead and operational costs.

What Cosmos APIs does NOWNodes support?

NOWNodes provides access to Cosmos Full Nodes, RPC endpoints, WebSocket connections, gRPC and Tendermint APIs through a single API key. Developers can build wallets, exchanges, analytics platforms, staking services, and other blockchain applications without managing their own infrastructure. Depending on your requirements, shared and dedicated node options are available.

How do I start using a Cosmos node?

After logging into NOWNodes and selecting a plan, navigate to the Dashboard in your account and choose the Ethereum network. Then scroll down the page and click the Add a New Key button. Once your API key is generated, you can immediately start using the ATOM node through RPC endpoints.