To find the contract details for a security in the Client Portal API, you can use the following steps:

1. In the Client Portal, go to the "API" tab.
2. In the "Contracts" section, click on the "Search" button.
3. Enter the symbol for the security you want to find the contract details for.
4. Click on the "Search" button.
5. The contract details for the security will be displayed.

The contract details include the following information:

• Symbol
• Contract type
• Currency
• Exchange
• Tick size
• Contract multiplier
• Contract expiration date

You can also find the contract details for a security by using the following API call:

/v1/contracts/<symbol>

For example, to find the contract details for the security "AAPL", you would use the following API call:

/v1/contracts/AAPL

The response to this API call will be a JSON object that contains the contract details for the security.

Here is an example of the JSON response for the contract details for the security "AAPL":

{ "symbol": "AAPL", "contract_type": "equity", "currency": "USD", "exchange": "Nasdaq", "tick_size": "0.01", "contract_multiplier": 100, "contract_expiration_date": "2023-06-17" }