Complete transaction history, any address, any chain
Your users don't care which chain their tokens are on, they want to see everything in one feed. SQD delivers full transaction history, token balances, and transfer events across 225+ networks in under 50ms.
Built for Wallets & Payments at scale
Full address history, sub-50ms
Query the complete transaction history for any address across any supported chain. Internal transactions, token transfers, NFT movements, and contract interactions, all in a single response, even for wallets with thousands of transactions.
Multi-standard token indexing
ERC-20 transfers, ERC-721 ownership changes, and ERC-1155 batch transfers indexed with real-time updates. Balances reflect the latest confirmed block, not a cached snapshot from 5 minutes ago.
Cross-chain portfolio in one call
Aggregate a wallet's positions across Ethereum, L2s, Solana, and 220+ other networks without writing per-chain aggregation logic. One API call returns the complete picture, your frontend just renders it.
Transfer event streaming for alerts
Stream Transfer, Approval, and ApprovalForAll events for monitored addresses as they confirm onchain. Build push notifications, approval revocation alerts, and suspicious activity detection without managing WebSocket connections.
Your worst traffic day is our normal Tuesday
Token launches, airdrops, and market crashes all produce the same pattern: every user opens their wallet simultaneously to check balances. Most data providers degrade under this load, response times climb from milliseconds to seconds, and error rates spike.
SQD's 2,000+ worker nodes across a decentralized network don't have a single bottleneck to saturate. The same architecture that indexes 2 petabytes of cross-chain data handles your traffic spikes without breaking a sweat. In the benchmarked workload, P50 stays at 27ms and P90 stays at 48.5ms while data integrity is enforced through cryptographic validation.
Performance, independently verified
Benchmarked by a top DeFi protocol running production traffic on Base.
SQD returns 100% correct data. Mega RPC fails 1 in 14 requests. Edge Proxy fails 1 in 7.
Premium RPCs match our speed but fail 5–15% of requests. SQD delivers both, under 50ms at P90 with zero errors.
Everything a wallet needs to display, in one API
Stop stitching together 5 different providers for transactions, token balances, NFTs, approvals, and activity feeds. SQD covers the full data surface.
What teams build with SQD
Frequently asked questions
How fast can wallets fetch balances with SQD?
Does SQD support transfer history pagination?
Which chains have wallet-grade SLAs?
Your blockchain data infrastructure, handled.
Private Portal. Dedicated. Validated. Managed. Tell us what you're building, we'll show you what it looks like on SQD.
validated data
for Enterprise
indexed & served