Blog
Onchain reads, decoded.
Guides, comparisons, integrations, reference docs, and trust reports for reading smart contract data from Claude, your code, n8n, or a REST client.
Why Your eth_call Loop Hits 429s (and How Multicall3 Fixes It)
A loop of eth_call calls works fine in dev, then throws 429 in production. Here's the real free-tier RPC limit behind it, and how Multicall3 fixes it.
evmquery vs. Raw viem: What a Falsifiable Benchmark Actually Shows
A falsifiable evmquery vs. raw viem comparison: real line counts, real round-trip counts, and an honest list of what evmquery still does not remove today.
How evmquery Resolves a Contract Read: ABI, Proxy, and Multicall3
A live walkthrough of what evmquery does between an address and a typed result: ABI resolution, proxy unwinding, and a Multicall3 batch, plus an honest look at portability.
Uniswap V3 Pool Data Without the SDK: Price, Liquidity, and Fees in One REST Call
Read sqrtPriceX96, tick, liquidity, and fee tier from any Uniswap V3 pool with a single POST request. No SDK, no ABI files, no RPC provider required.
Live On-Chain Data in LangGraph: Build an EVM Blockchain Tool in 40 Lines
Wire evmquery into a LangGraph ReAct agent to query live EVM contract data — token supplies, oracle prices, DeFi positions — with full state persistence across tool calls. No ABIs, no RPC node.
Live Onchain Data in Pydantic AI: Build an EVM Blockchain Tool in 30 Lines
Define a typed Pydantic AI tool that reads live EVM contract data — USDC balances, ETH prices, Aave positions — without ABIs, RPC nodes, or web3.py boilerplate.
Live Onchain Data in CrewAI: Build a Custom EVM Blockchain Tool
Wire a custom evmquery tool into CrewAI and give your AI crew live access to EVM contract state — USDC balances, ETH prices, and Aave health factors — without ABIs or RPC nodes.
Multi-Wallet ERC-20 Balance Scanning from TypeScript: No ABIs, No RPC, No Viem
Scan ERC-20 token balances for many wallets, across Ethereum, Base, and BNB Chain, using TypeScript fetch. No Viem, no ABI files, no RPC provider needed.
Blockchain Monitoring in Python: Poll EVM Contract State Without the Boilerplate
How to write a Python script that polls EVM contract state (Aave health factors, ERC-20 balances, multi-wallet checks) using evmquery's REST API. No ABIs, no ABI decoders, no Multicall3 setup.