No RPS limits
There are no predefined RPS limits on paid plans. Throughput scales dynamically based on cluster capacity, without artificial throttling.
Harmony (ONE) nodes and RPC explorer
Connect to the best Harmony API with 99.95% uptime via NOWNodes. Get reliable Harmony API endpoints in minutes — with a free tier available.
Products
Shared
Dedicated
Networks
Mainnet
API Tools
Archive mode
Advanced API tools
Advanced APIs for Harmony and all supported networks — from real-time WebSocket streams to deep historical and indexed data.
Flexible Harmony API infrastructure
Clear pricing and shared infrastructure with no hidden limits or unexpected restrictions for Harmony.
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 Harmony node maintenance, scaling and availability.
FAQ
What is a Harmony node provider?
A Harmony node provider delivers managed blockchain infrastructure, giving developers instant access to the Harmony network without the burden of deploying and maintaining their own nodes. Instead of managing synchronization, storage requirements, software updates, and ongoing maintenance, teams can connect to reliable hosted endpoints and start building immediately.
What is a Harmony API?
A Harmony API enables applications to communicate with the Harmony blockchain through managed endpoints without operating a node. Developers can use the API to broadcast transactions, retrieve block and transaction data, query accounts and balances, interact with smart contracts, and monitor blockchain activity. API access is the standard way wallets, DeFi applications, exchanges, explorers, and other blockchain services connect to the Harmony network.
Should I run a Harmony node myself?
Running your own Harmony node is not necessary for most projects. Operating a node requires storage capacity, continuous synchronization, security monitoring, software updates, and dedicated infrastructure. These requirements often make self-hosted nodes costly and time-consuming, particularly as your application grows.
What Harmony APIs does NOWNodes support?
NOWNodes provides Harmony RPC API and Archive mode through reliable, enterprise-grade infrastructure. These services enable developers to broadcast transactions, retrieve block and transaction data, access complete historical blockchain records, query accounts and balances, and interact with smart contracts without maintaining their own Harmony nodes.
How do I start using a Harmony node?
After logging in to NOWNodes and selecting a plan, navigate to the Dashboard in your account and scroll down the page. There you will find the Add a New Key button. Click it to generate your API key, then use it to connect to the Harmony API.
Can I access Harmony infrastructure for free?
Yes. You can start with our START plan, which provides access to shared Harmony infrastructure with up to 100,000 API requests per month.
