Read one 32-byte contract storage slot on 16 EVM chains, returned as hex, intege
Read one 32-byte contract storage slot on 16 EVM chains, returned as hex, integer and address form, for example proxy implementation slots.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
353 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/chain/storage
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.01 | 353 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
"chain": "ethereum",
"slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "the contract address",
"type": "string"
},
"chain": {
"description": "chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id",
"type": "string"
},
"slot": {
"description": "storage slot as a decimal integer or 0x hex (for example 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc, the EIP-1967 implementation slot)",
"type": "string"
}
},
"required": [
"chain",
"address",
"slot"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"description": "the contract that was read",
"type": "string"
},
"as_address": {
"description": "the low 20 bytes as an address when the value looks like one, else null",
"type": [
"string",
"null"
]
},
"chain": {
"description": "the chain name that was queried",
"type": "string"
},
"chain_id": {
"description": "EIP-155 chain id of that network",
"type": "number"
},
"is_zero": {
"description": "true when the slot is empty",
"type": "boolean"
},
"slot": {
"description": "the storage slot, normalized to hex",
"type": "string"
},
"source": {
"description": "where the data was read from",
"type": "string"
},
"value_hex": {
"description": "the raw 32-byte value",
"type": "string"
},
"value_uint": {
"description": "the value as an unsigned integer string",
"type": "string"
}
},
"required": [
"chain",
"chain_id",
"address",
"slot",
"value_hex",
"value_uint",
"is_zero",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}