Build fast.
No infra. No drag.
Launch wallet apps across chains with clean, production-ready APIs
POWERING WEB3's TOP APPS
The strongest foundation for building apps using onchain data
Real-time, synchronous access to blockchain data, without manual indexing.
60+ chains from a single platform, simplifying development across the board.
Rich, structured responses complete with metadata and analytics.
Best-in-class performance, uptime and reliability.
Clear docs, intuitive setup, and a powerful dev experience.
Flexible pricing, top performance. None of the complexity.
No nodes, no databases
Sim IDX offers instant access to the live data your app needs.
Discover Sim APIs
"We were able to both launch and sustain high RPS on Solana and many other EVM chains."
Brandon Kumar, Co-Founder of Layer3

Sim isn't just an API vendor — they're a strategic partner. Their roadmap aligns with our mission to make Farcaster the most user-friendly wallet in crypto.”

Simple, flexible pricing
Builder Start for Free
For individual developers and testing
Enterprise
For production application and scaling projects
Build on the fastest and most intuitive developer platform
