Wallet API
Holders, portfolios and trades for any address
Wallet data for Ethereum, Base, Arbitrum: the largest holders of a token, what an address holds and what it is worth in USD, and the trades of a pool. PnL and average cost per position are coming next.
- 3 chains
- Ethereum, Base, Arbitrum
- Same key as On-chain DEX API
- One Crypto Data API key, quota and plan
- 100,000 free calls
- every 30 days
Try the API, no key needed
Pick a chain and a route, then send. Real responses from the same API you get with a key.
What you can query
Holder rankings
The top 5,000 holders of a tracked token with balance and share of supply, burn addresses and pools left out. Base rankings are still being backfilled.
Portfolio and trades
The tokens an address holds with USD value, plus live balanceOf for up to 50 tokens you name; pool trades with trader address, amounts and USD value.
PnL and average cost
Per-token position, weighted average cost, realized and unrealized PnL, buy and sell counts. Documented ahead of launch; until it opens the list is empty.
One key and one plan with the On-chain DEX API
- The same key: create an On-chain DEX API endpoint in the Dashboard and send its key in the X-API-Key header to https://api.blockreq.com/v1/dex. It calls both the On-chain DEX API and the Wallet API.
- The same quota: Wallet API and On-chain DEX API calls count against one Crypto Data API quota, separate from RPC Requests.
- The same plans: there is no separate Wallet API price list; Crypto Data API pricing covers both.
- Chains today: Ethereum, Base, Arbitrum.
Free
100,000 calls / 30 days
Rate limit: 1 / 1 Req/s
You get Free when you create your first On-chain DEX API endpoint.