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EVM Raw Storage Slot Reader
x402
EVM Raw Storage Slot Reader is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).
Reads a single raw storage slot from any smart contract on one of ten supported EVM chains
Price / call$0.002
Success—
StatusUnknown
How this service works
Read one raw storage slot from any contract — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok status, the raw bytes32 value stored at the requested slot, a payment receipt including tx_hash, amount paid in USD, and a receipt_id, plus the timestamp of the response.
Example use cases
Inspect proxy implementation slot
“Can you read storage slot 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc from the contract 0x1234567890abcdef1234567890abcdef12345678 on Arbitrum? I want to see what implementation address is stored there.”
Audit token contract ownership storage
“Read slot 0x0 from the contract 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum — I need to verify who the current owner variable points to at the raw storage level.”
Monitor governance config slot on Base
“Fetch the raw value at storage slot 0x1 for the contract 0xCafeBabeCafeBabeCafeBabeCafeBabeCafeBabe on Base mainnet so I can check if the governance config has changed.”
Technical details
Endpoint
POSThttps://twin.unykorn.org/evm-storage?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to read a specific raw storage slot from a smart contract without having the ABI, or when you want to bypass ABI decoding and inspect storage directly. Ideal for debugging proxy contracts (EIP-1967), auditing storage layouts, or checking any storage variable by its computed slot index across ten major EVM chains in a single pay-per-call model.
Side effects
- Invalid contract address format (must be 0x followed by 40 hex chars)
- Invalid slot format (must be valid hex string)
- Unsupported chain name (only ten chains supported)
- Contract does not exist at the given address on the specified chain
- Payment failure or insufficient x402 balance
- Node RPC timeout or unavailability for the requested chain
- Block identifier not found or not yet finalized
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "evm-storage",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.002,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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