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Astar RPC Endpoint and API

Astar

Connect to Astar Network using OnFinality's managed RPC endpoints and dedicated node infrastructure. Astar is the leading smart contract hub on Polkadot, supporting both WASM and EVM environments. Whether you are building a dApp, wallet, DeFi protocol, or analytics tool, OnFinality provides reliable access to the Astar blockchain without the overhead of running your own node.

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Open In Polkadot JS

Public endpoint rate limit: 5 req/sec

Quick Start

curl -H 'Content-Type: application/json' -d '{"id":1,"jsonrpc":"2.0","method":"chain_getBlock"}' 'https://astar.api.onfinality.io/public'

curl -H 'Content-Type: application/json' -d '{"id":1,"jsonrpc":"2.0","method":"chain_getBlock"}' 'https://astar.api.onfinality.io/public'

HTTPs

https://astar.api.onfinality.io/public

https://astar.api.onfinality.io/public

Websocket

wss://astar.api.onfinality.io/public-ws

wss://astar.api.onfinality.io/public-ws

Sidecar

https://astar.api.onfinality.io/rest/public/blocks/head

https://astar.api.onfinality.io/rest/public/blocks/head

Deploy Dedicated Node

Go to Growth Plan

High Performance
Powerful RPC Analytics
Up to 500 rps
No daily response limit
Priority Support
Decentralized Servers

Get Started

OnFinality Astar RPC features

Substrate JSON-RPC protocol with HTTP and WebSocket transport
Archive node support for historical data queries
Dedicated nodes for high-throughput workloads
Global regions: Hong Kong and N. Virginia
Request analytics to monitor usage and errors

Resources

Additional Info

Build faster with Astar RPC endpoints

Use OnFinality's Astar RPC APIs to connect wallets, dApps, dashboards, bots, and backend services without operating your own node from day one.

Public endpoint testing

Start with the Astar public RPC endpoint for lightweight checks, prototypes, and quick integration tests.

Authenticated API access

Move production traffic to authenticated endpoints when you need clearer limits, analytics, and operational visibility.

Standard RPC methods

Query Astar blocks, transactions, balances, events, and chain state through HTTP and WebSocket workflows.

Operate Astar infrastructure with more control

Production teams need more than an endpoint URL. They need observability, predictable capacity, and a path from shared RPC access to isolated infrastructure.

Request visibility

Track usage patterns and response activity so your team can understand traffic growth before it becomes an incident.

Dedicated node path

Use dedicated Astar nodes when your workload needs isolated resources, custom operations, or stronger capacity planning.

Archive and historical data

Plan for archive access when analytics, audits, indexers, or advanced app features need older Astar state.

Choose the right Astar RPC setup

Different Astar products need different infrastructure. OnFinality gives teams a practical path from public RPC testing to production-grade API and node operations.