The only B3
provider you’ll ever need
Build on B3 with the fastest RPC Nodes, a comprehensive library of web3 APIs, and the most performant blockchain ETL tools—all backed by enterprise-grade infrastructure.
Trusted by the best
Battle-tested
infrastructure
for B3 builders
Providing performance and reliability at scale for the world's top businesses and onchain projects. Join them.
400 billion+
API requests handled monthly, we can handle any volume you need.
99.99%
Uptime SLA ensures you're only paying while we're online.
2.5x
Faster API response times than our competitors.
24/7
Access to our support team, Discord community, and docs.
Everything you need to build on B3,
all under one account
- B3 Sepolia Testnet
- B3 Mainnet
- 01
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Reliable & scalable
RPC endpoints
Connect to B3 with one line of code and get unparalleled latency, reliability, and scalability.
- Webhook ReceivedJust now
{ "id": 27774258, "eventType": "transfer", "chain": "B3", "timestamp": 1744984842549, "address": "0x57cfd5d72a6a2f72", "amount": "39.697", "token": "AAVE", "timeAgo": "45 min ago" }
- Webhook ReceivedJust now
{ "id": 27774258, "eventType": "transfer", "chain": "B3", "timestamp": 1744984842549, "address": "0x57cfd5d72a6a2f72", "amount": "39.697", "token": "AAVE", "timeAgo": "45 min ago" }
- Webhook ReceivedJust now
{ "id": 27774258, "eventType": "transfer", "chain": "B3", "timestamp": 1744984842549, "address": "0x57cfd5d72a6a2f72", "amount": "39.697", "token": "AAVE", "timeAgo": "45 min ago" }
Target live events
Stream live blockchain events with built-in transformation and reorg handling, delivering raw or filtered data instantly.
Historical backfills
Deliver raw or filtered historical blockchain data sequentially, with guaranteed delivery and flexible batching options.
Supercharge your dApp with add-on services
Integrate with add-on services and tools to enhance the functionality of your B3 application.
Learn more about B3,
and how to get started
Why build on B3?
B3 is a gaming ecosystem, built on Base, that aims to bring the next generation of gamers and game creators on-chain.
B3 is built leveraging the OP Stack, the world's most popular application-specific chain framework.
Launch your own RollupB3 RPC Docs
Browse our robust documentation for all of our supported chains and learn how to call RPC methods using up-to-date libraries and code examples across Python, Ruby, JavaScript, and cURL.