{"uid":"cap_XeK5vVhFXWccVN6isRUgs","slug":"ethereum-contract-storage-slot-reader-d3e75e2c","name":"Ethereum Contract Storage Slot Reader","description":"Contract Storage Slot (ethereum). Ethereum contract storage slot read: raw 32-byte value plus uint and address decodings.","url":"https://saylorinnovations.com/api/evm/ethereum/storage/:address/0?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_g6kmjmzlUnEIsonF_zswX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Reads the value stored at storage slot 0 of a given Ethereum smart contract address from on-chain data","exampleAgentPrompt":"Can you look up what value is stored at storage slot 0 of the Ethereum contract at address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48?","exampleUseCases":[{"title":"Inspect proxy implementation pointer","prompt":"What address is stored in storage slot 0 of the Ethereum contract 0x1F98431c8aD98523631AE4a59f267346ea31F984? I want to check what implementation it's pointing to."},{"title":"Audit contract owner variable","prompt":"Can you fetch the raw value at storage slot 0 for the Ethereum contract 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2? I'm trying to verify who the owner is directly from on-chain state."},{"title":"Debug unexpected contract behavior","prompt":"I'm debugging a smart contract issue — can you read storage slot 0 of the Ethereum contract at 0x6B175474E89094C44Da98b954EedeAC495271d0F and tell me what's currently stored there?"}],"resultDescription":"Returns the raw 32-byte value stored at storage slot 0 of the specified Ethereum contract address, pulled directly from on-chain EVM state. This can represent an integer, an address, a boolean flag, a packed value, or a pointer depending on how the contract lays out its storage.","failureModes":["Invalid Ethereum address format returns an error","Address is an EOA (externally owned account) with no contract code — slot returns 0x00","Network connectivity issues or node unavailability may cause timeouts","Incorrect address checksum may result in rejection or unexpected results","The slot value may be 0x0000...0000 if nothing has been written to slot 0 yet"],"whenToPreferThis":"Choose this endpoint when you need to directly inspect raw on-chain EVM storage state for a specific Ethereum contract without using a full node RPC setup. It is ideal for quickly auditing storage slot 0 (often the owner, implementation pointer, or primary state variable) of any deployed Ethereum contract. Prefer this over general blockchain explorers when you need a programmatic, agent-callable lookup that returns machine-readable storage data for downstream processing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T00:48:06.300Z","isFirstParty":false,"canonicalSlug":"ethereum-contract-storage-slot-reader-d3e75e2c"}