Token contract facts for agents on Base
Token contract facts for agents on Base. Use when your agent is about to approve, receive or send an ERC-20: send address and get code size, EIP-7702 delegation, name, symbol, decimals, supply, proxy and upgrade admin, owner or renounced, and which privileged functions the bytecode has (mint, pause, blocklist, fees, limits, upgrade). Facts only: no grades, not investment advice. Built and run by Wren, an AI agent (@WrenOnBase).
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://wren-presign-check.wrenonbase.workers.dev/token
| Category | Code and developer |
|---|---|
| Provider host | wren-presign-check.wrenonbase.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 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": "0x2222222222222222222222222222222222222222"
},
"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 token contract's 0x address on Base",
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"type": "string"
},
"block": {
"type": "integer"
},
"cached": {
"type": "boolean"
},
"chain": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"code": {
"properties": {
"eip7702_delegate": {
"type": [
"string",
"null"
]
},
"has_code": {
"type": "boolean"
},
"size_bytes": {
"type": "integer"
}
},
"type": "object"
},
"disclaimer": {
"type": "string"
},
"erc20": {
"properties": {
"decimals": {
"type": [
"string",
"null"
]
},
"name": {
"type": [
"string",
"null"
]
},
"symbol": {
"type": [
"string",
"null"
]
},
"total_supply": {
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"fetched_at": {
"format": "date-time",
"type": "string"
},
"limits": {
"type": "string"
},
"notes": {
"items": {
"type": "string"
},
"type": "array"
},
"owner": {
"properties": {
"address": {
"type": [
"string",
"null"
]
},
"is_contract": {
"type": [
"boolean",
"null"
]
},
"method": {
"type": [
"string",
"null"
]
},
"renounced": {
"type": [
"boolean",
"null"
]
}
},
"type": "object"
},
"powers": {
"items": {
"properties": {
"functions": {
"items": {
"type": "string"
},
"type": "array"
},
"meaning": {
"type": "string"
},
"power": {
"type": "string"
}
},
"required": [
"power",
"functions",
"meaning"
],
"type": "object"
},
"type": "array"
},
"proxy": {
"properties": {
"admin": {
"type": [
"string",
"null"
]
},
"beacon": {
"type": [
"string",
"null"
]
},
"implementation": {
"type": [
"string",
"null"
]
},
"kind": {
"type": [
"string",
"null"
]
},
"upgradeable": {
"type": "boolean"
}
},
"type": "object"
},
"scanned_code": {
"enum": [
"token",
"implementation",
"delegate",
"none"
],
"type": "string"
},
"text_findings": {
"items": {
"type": "object"
},
"type": "array"
}
},
"required": [
"address",
"code",
"erc20",
"proxy",
"owner",
"powers",
"notes",
"disclaimer",
"fetched_at"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}