Sim API

Build your wallet and app fast with pre-defined APIs

Fast, reliable, and cost-predictable access to 60+ blockchains

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POWERING WEB3's TOP APPS

Speed that sets the standard

Data availability within 200ms of block propagation.

Multichain made simple

60+ chains, one unified API.

Rich, ready-to-use data

Onchain prices, metadata, and activity feeds — pre-enriched for your app.

50×Improvement in query times

48hTime to complete the migration

“With response times far better than alternatives and support for a wide breadth of chains, we were able to both launch and sustain high RPS on Solana and many other EVM chains.”

Brandon KumarCO-FOUNDER OF Layer3

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Multichain Unlocked – One unified API call

Explore all chains

Discover Sim APIs

Balances

All token balances for a wallet or address, ordered by USD value.

EVMSVM

Activity

Derived activities including swaps, transfers, and approvals within transactions for any address.

EVM

Transactions

Quick and accurate lookup of transactions associated with any address.

EVMSVM

Token Holders

Holders of an ERC20 token, sorted by balance.

EVM

Collectibles

All NFT (ERC721 and ERC1155) balances, including IDs and metadata.

EVM

Token Info

Metadata including symbol, name, decimals, supply information, logo URLs, and realtime prices.

EVM

"We were able to both launch and sustain high RPS on Solana and many other EVM chains."

Brandon Kumar, Co-Founder of Layer3

Give your users the UX they deserve

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