Call when an agent needs is_contract, bytecode size and hash, EIP-1967 proxy imp
Call when an agent needs is_contract, bytecode size and hash, EIP-1967 proxy implementation, and owner() for one Base address. owner_renounced is true for the zero address or the dead address. An EOA is is_contract false. Read-only. Send JSON {"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-contract-info first.
Not tested: has real-world effectsour last check, 2026-10-11
0 of 0checks answered this week
n/amedian answer time
$0.005listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://agentshelf.syntexa.ch/v1/base-contract-info
| Category | Code and developer |
|---|---|
| Provider host | agentshelf.syntexa.ch |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"examples": [
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
],
"properties": {
"address": {
"description": "Account on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913. Returns is_contract, bytecode size and hash, EIP-1967 implementation, and owner() when present. An EOA is is_contract false.",
"examples": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"examples": [
{
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"beacon": null,
"billed": true,
"bytecode_bytes": 2,
"bytecode_hash": "0x1111111111111111111111111111111111111111111111111111111111111111",
"implementation": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"is_contract": true,
"network": "eip155:8453",
"ok": true,
"owner": "0x0000000000000000000000000000000000000000",
"owner_renounced": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"upgradeable_proxy": true,
"warnings": []
}
],
"properties": {
"address": {
"examples": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"type": "string"
},
"beacon": {
"examples": [
null
],
"type": [
"string",
"null"
]
},
"billed": {
"examples": [
true
],
"type": "boolean"
},
"bytecode_bytes": {
"examples": [
2
],
"minimum": 0,
"type": "integer"
},
"bytecode_hash": {
"examples": [
"0x1111111111111111111111111111111111111111111111111111111111111111"
],
"type": [
"string",
"null"
]
},
"implementation": {
"examples": [
"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
],
"type": [
"string",
"null"
]
},
"is_contract": {
"examples": [
true
],
"type": "boolean"
},
"network": {
"const": "eip155:8453",
"examples": [
"eip155:8453"
],
"type": "string"
},
"ok": {
"const": true,
"examples": [
true
],
"type": "boolean"
},
"owner": {
"examples": [
"0x0000000000000000000000000000000000000000"
],
"type": [
"string",
"null"
]
},
"owner_renounced": {
"examples": [
true
],
"type": [
"boolean",
"null"
]
},
"receipt_id": {
"examples": [
"rcpt_01EXAMPLE000000000000000"
],
"type": "string"
},
"upgradeable_proxy": {
"examples": [
true
],
"type": "boolean"
},
"warnings": {
"default": [],
"examples": [
[]
],
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"ok",
"receipt_id",
"billed",
"address",
"network",
"is_contract",
"bytecode_bytes",
"bytecode_hash",
"upgradeable_proxy",
"implementation",
"beacon",
"owner",
"owner_renounced"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}