Contract or wallet check on 16 EVM chains
Contract or wallet check on 16 EVM chains: deployed bytecode size, account kind including EIP-7702 delegated accounts, optional runtime bytecode.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
1271 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/code
| Category | Code and developer |
|---|---|
| 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 | $0.01 | 1271 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
"chain": "ethereum"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "the address to check",
"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"
}
},
"required": [
"chain",
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"account_kind": {
"description": "contract, eoa_or_empty or eip7702_delegated_eoa",
"type": "string"
},
"address": {
"description": "the address that was checked",
"type": "string"
},
"bytecode": {
"description": "runtime bytecode as hex, only when full=true",
"type": [
"string",
"null"
]
},
"bytecode_truncated": {
"description": "true when bytecode was cut at 24,576 bytes",
"type": "boolean"
},
"chain": {
"description": "the chain name that was queried",
"type": "string"
},
"chain_id": {
"description": "EIP-155 chain id of that network",
"type": "number"
},
"code_size_bytes": {
"description": "size of the deployed runtime code in bytes",
"type": "number"
},
"delegate_target": {
"description": "for EIP-7702 accounts, the contract the account delegates to",
"type": [
"string",
"null"
]
},
"is_contract": {
"description": "true when the address has contract code (EIP-7702 delegated accounts count as accounts, not contracts)",
"type": "boolean"
},
"source": {
"description": "where the data was read from",
"type": "string"
}
},
"required": [
"chain",
"chain_id",
"address",
"is_contract",
"account_kind",
"code_size_bytes",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}