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ChainRead Multicall – Batch EVM Read
x402
ChainRead Multicall – Batch EVM Read is a paid API for AI agents from chainread.genexxis.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).
Executes up to 20 read-only smart contract calls in a single Multicall3 request across Ethereum, Base, Arbitrum, Optimism, Polygon, and BNB Chain, returning decoded results in one response.
Price / call$0.005
Success—
StatusUnknown
How this service works
Up to 20 contract reads on one chain in a single Multicall3 request; each call returns success, decoded result and raw hex, or its revert reason.
Output
A JSON object containing: timestamp (asOf), chain name, chainId, blockNumber, blockTag, count of calls, succeeded count, and a results array. Each result item includes: index, contract address, function signature, args, success flag, and decoded result value (uint256 as string, address as string, etc.). Failed calls include an error reason rather than a result.
Example use cases
DeFi dashboard token stats
“I need the name, symbol, decimals, and totalSupply for three ERC-20 tokens — 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, 0x4200000000000000000000000000000000000006, and 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA — all on Base. Can you fetch all of that in one batch call?”
Multi-pool liquidity check
“Grab the reserve0 and reserve1 for these five Uniswap v2-style pools on Ethereum in one shot: 0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc, 0x0d4a11d5eeaaC28EC3F61d100daF4d40471f1852, 0xa478c2975ab1ea89e8196811f51a7b7ade33eb11, 0xd3d2E2692501A5c9Ca623199D38826e513033a17, 0xbb2b8038a1640196fbe3e38816f3e67cba72d940 — use the function getReserves() view returns (uint112,uint112,uint32).”
Batch NFT ownership verification
“Check the ownerOf for token IDs 1, 42, and 99 on the contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum using ownerOf(uint256) view returns (address) — run them all at once as a multicall.”
Technical details
Endpoint
POSThttps://chainread.genexxis.com/multicall?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to read multiple smart contract values from the same chain in a single network round-trip, reducing latency and cost compared to sequential /read-contract calls. Ideal for dashboards, portfolio aggregators, or any agent workflow that needs to fan out across several contract functions or addresses at once. Prefer /read-contract for a single call, and /token or /resolve for specialized token-info or ENS lookups.
Side effects
- HTTP 422 with decoded revert reason if any individual call reverts on-chain
- Invalid function signature format causes parsing error
- Unsupported chain name returns error
- More than 20 calls in the batch rejected
- RPC node unavailable causes timeout or 5xx error
- Invalid contract address (non-checksummed or wrong length) returns error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| calls | array | Up to 20 items {address, function, args?} |
| chain | string | ethereum (default), base, arbitrum, optimism, polygon, bsc |
| blockTag | string | latest (default) or a block number |
Output
Schema · Response
{
"type": "json",
"example": {
"asOf": "2026-10-25T03:50:00.000Z",
"chain": "base",
"count": 3,
"chainId": 8453,
"results": [
{
"args": [],
"index": 0,
"result": "USDC",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"success": true,
"function": "symbol() returns (string)"
},
{
"args": [],
"index": 1,
"result": 6,
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"success": true,
"function": "decimals() returns (uint8)"
},
{
"args": [],
"index": 2,
"result": "4114170396312345",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"success": true,
"function": "totalSupply() returns (uint256)"
}
],
"blockTag": "latest",
"succeeded": 3,
"blockNumber": "37412345"
}
}Tags
x402
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