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APIAcre Base Contract Read
x402
APIAcre Base Contract Read is a paid API for AI agents from apiacre.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Executes a single read-only eth_call against a specified Base mainnet contract at a resolved block, returning call results with optional ABI decoding and block evidence.
Price / call$0.005
Success—
StatusUnknown
How this service works
Execute one bounded read-only eth_call against a resolved Base mainnet block, retain call and block evidence, and optionally decode caller-specified ABI output types.
Output
Returns the raw hex return data from eth_call, optionally ABI-decoded into typed values matching the caller-supplied output types, along with the resolved block number, block hash, and call parameters as verifiable evidence of the query.
Example use cases
Check DeFi pool reserve on Base
“Query the Base mainnet contract at 0x4200000000000000000000000000000000000006 using the getReserves() calldata and decode the output as (uint112, uint112, uint32) so I can see the current pool reserves with block proof.”
Verify NFT ownership on Base
“Call the Base contract 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA with ownerOf(uint256) calldata for token ID 42 and decode the result as an address — I need the block evidence too for auditing.”
Read governance proposal state
“Execute a read-only eth_call on the Base mainnet governance contract at 0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5 with proposalState(uint256) calldata for proposal 7, decode the output as uint8, and show me the resolved block details.”
Technical details
Endpoint
POSThttps://apiacre.com/v1/crypto/base-contract-readWhen to prefer
Choose this endpoint when you need a single, auditable, read-only call to a Base mainnet smart contract without operating your own Ethereum node, especially when you need block-level evidence or optional ABI decoding of the response. Prefer it over full node RPC when you want a verifiable, bounded call with retained evidence suitable for compliance or audit trails.
Side effects
- Contract address does not exist on Base mainnet — returns error indicating no contract at address
- Invalid or malformed calldata — call reverts or returns empty data
- ABI output type mismatch — decoding fails if specified types don't match actual return data
- Block resolution failure — specified block not yet finalized or not available
- Rate limit or payment failure — call rejected if x402 payment not provided or insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| contract | string | |
| block_tag | string | |
| call_data | string | |
| gas_limit | integer | |
| from_address | — | |
| output_types | array |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"call": {
"from": null,
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"gasLimit": 2000000,
"selector": "0x313ce567",
"dataBytes": 4
},
"block": {
"hash": "0x1111111111111111111111111111111111111111111111111111111111111111",
"number": 34567890,
"timestamp": "2026-08-10T16:00:00+00:00",
"requestedTag": "safe"
},
"result": {
"hex": "0x0000000000000000000000000000000000000000000000000000000000000006",
"bytes": 32,
"sha256": "d1ec675902ef1633427ca360b290b0b3045a0d9058ddb5e648b4c3c3224c5c68",
"truncated": false,
"returnedBytes": 32
},
"source": "https://docs.base.org/base-chain/api-reference/ethereum-json-rpc-api/eth_call",
"network": "eip155:8453",
"success": true,
"readOnly": true,
"rpcError": null,
"warnings": [],
"disclaimer": "Read-only public Base mainnet execution at one resolved block. No transaction...",
"outputTypes": [
"uint8"
],
"decodeStatus": "decoded",
"decodedValues": [
6
],
"transactionBroadcast": false
},
"meta": {
"cached": false,
"sources": [],
"warnings": [],
"duration_ms": 42,
"next_actions": []
},
"service": "crypto.base-contract-read",
"version": "1",
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a"
}
}Tags
x402
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