Bytecode selector scan for 16 EVM chains
Bytecode selector scan for 16 EVM chains: known functions found and capability flags such as mint, pause, blacklist, permit, fees and trading switch.
Not tested: has real-world effectsour last check, 2026-10-21
0 of 0checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/chain/function-selectors
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
"chain": "ethereum"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "the contract address to scan",
"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": {
"address": {
"description": "contract scanned",
"type": "string"
},
"capabilities": {
"description": "true or false hints derived from the matches",
"type": [
"object",
"null"
]
},
"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 code",
"type": "number"
},
"known": {
"description": "matched selectors with signatures",
"items": {
"properties": {
"selector": {
"description": "4-byte selector",
"type": [
"string",
"null"
]
},
"signature": {
"description": "matched function signature",
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"known_selectors": {
"description": "selectors matched to a known signature",
"type": "number"
},
"looks_like_proxy": {
"description": "true when the code looks like a small proxy",
"type": "boolean"
},
"note": {
"description": "plain-language reading of the result",
"type": "string"
},
"selectors_found": {
"description": "distinct 4-byte selectors in the bytecode",
"type": "number"
},
"source": {
"description": "where the data was read from or how it was computed",
"type": "string"
},
"unknown_selectors": {
"description": "selectors not in the list",
"type": "number"
}
},
"required": [
"chain",
"chain_id",
"address",
"selectors_found",
"known",
"capabilities",
"note",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}