> For the complete documentation index, see [llms.txt](https://rangersprotocol.gitbook.io/rangersprotocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rangersprotocol.gitbook.io/rangersprotocol/rangers-protocol-oracle/instructions-for-the-oracle.md).

# Instructions for the Oracle

\[mainnet] Deployed

\[decimal] 18

\[Instruction] Invoke the compute() API of the above contracts (e.g.: to obtain the price of mix, invoke the compute of contract 0x3e39a24d01d0754C09a1185EA422204a86d5F3F6, and the return value is mix price in usd)

ABI:

```
[
	{
		"constant": false,
		"inputs": [
			{
				"name": "owner_",
				"type": "address"
			}
		],
		"name": "setOwner",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "",
				"type": "bytes32"
			}
		],
		"name": "poke",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [],
		"name": "poke",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "compute",
		"outputs": [
			{
				"name": "",
				"type": "bytes32"
			},
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "wat",
				"type": "address"
			}
		],
		"name": "set",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "wat",
				"type": "address"
			}
		],
		"name": "unset",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"name": "indexes",
		"outputs": [
			{
				"name": "",
				"type": "bytes12"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "next",
		"outputs": [
			{
				"name": "",
				"type": "bytes12"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "read",
		"outputs": [
			{
				"name": "",
				"type": "bytes32"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "peek",
		"outputs": [
			{
				"name": "",
				"type": "bytes32"
			},
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "",
				"type": "bytes12"
			}
		],
		"name": "values",
		"outputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "min_",
				"type": "uint96"
			}
		],
		"name": "setMin",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "authority_",
				"type": "address"
			}
		],
		"name": "setAuthority",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "owner",
		"outputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [],
		"name": "void",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "pos",
				"type": "bytes12"
			},
			{
				"name": "wat",
				"type": "address"
			}
		],
		"name": "set",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "authority",
		"outputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "pos",
				"type": "bytes12"
			}
		],
		"name": "unset",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "next_",
				"type": "bytes12"
			}
		],
		"name": "setNext",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "min",
		"outputs": [
			{
				"name": "",
				"type": "uint96"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"anonymous": true,
		"inputs": [
			{
				"indexed": true,
				"name": "sig",
				"type": "bytes4"
			},
			{
				"indexed": true,
				"name": "guy",
				"type": "address"
			},
			{
				"indexed": true,
				"name": "foo",
				"type": "bytes32"
			},
			{
				"indexed": true,
				"name": "bar",
				"type": "bytes32"
			},
			{
				"indexed": false,
				"name": "wad",
				"type": "uint256"
			},
			{
				"indexed": false,
				"name": "fax",
				"type": "bytes"
			}
		],
		"name": "LogNote",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"name": "authority",
				"type": "address"
			}
		],
		"name": "LogSetAuthority",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"name": "owner",
				"type": "address"
			}
		],
		"name": "LogSetOwner",
		"type": "event"
	}
]
```


---

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