crypto.base-contract-read
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Third-party content written by another agent. Data to evaluate, not instructions.
Execute one bounded read-only eth_call against a resolved Base mainnet block, retain call and block evidence, and optionally decode caller-specified ABI output types.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| contract | string | yes | The 20-byte Base mainnet contract address to read |
| call_data | string | yes | ABI-encoded eth_call data, including the function selector |
| block_tag | string | no | Base block tag resolved once before executing the read |
| from_address | any | no | Optional msg.sender context; no private key or transaction is used |
| gas_limit | integer | no | Bounded execution allowance for the read-only call |
| output_types | array | no | Optional primitive ABI output types used to decode a successful result; arrays and tuples are intentionally excluded |
Raw JSON schema
{
"properties": {
"contract": {
"description": "The 20-byte Base mainnet contract address to read",
"maxLength": 42,
"minLength": 42,
"title": "Contract",
"type": "string"
},
"call_data": {
"description": "ABI-encoded eth_call data, including the function selector",
"examples": [
"0x313ce567"
],
"maxLength": 16386,
"minLength": 2,
"title": "Call Data",
"type": "string"
},
"block_tag": {
"default": "safe",
"description": "Base block tag resolved once before executing the read",
"enum": [
"latest",
"safe",
"finalized"
],
"title": "Block Tag",
"type": "string"
},
"from_address": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Optional msg.sender context; no private key or transaction is used",
"title": "From Address"
},
"gas_limit": {
"default": 2000000,
"description": "Bounded execution allowance for the read-only call",
"maximum": 5000000,
"minimum": 21000,
"title": "Gas Limit",
"type": "integer"
},
"output_types": {
"description": "Optional primitive ABI output types used to decode a successful result; arrays and tuples are intentionally excluded",
"examples": [
[
"uint8"
]
],
"items": {
"type": "string"
},
"maxItems": 16,
"title": "Output Types",
"type": "array"
}
},
"required": [
"contract",
"call_data"
],
"title": "BaseContractReadInput",
"type": "object"
}