Feature Request: better output param types regarding Gemini

[michaelthedev]

I have this structured output:

<?php

declare(strict_types=1);

namespace App\Neuron\Outputs\BankTransfer;

use NeuronAI\StructuredOutput\SchemaProperty;

class TransferDraft
{
    #[SchemaProperty(
        description: 'Recipient bank account number, normally 10 digits. Null if not provided yet.',
        required: false
    )]
    public ?string $accountNumber = null;

    #[SchemaProperty(
        description: 'Amount to transfer in Naira as a number. Null if not provided yet.',
        required: false
    )]
    public ?float $amount = null;

    #[SchemaProperty(
        description: 'Optional transfer narration/reason. Null if not provided.',
        required: false
    )]
    public ?string $narration = null;
}

Schema provided to gemini:

"responseSchema": {
      "type": "OBJECT",
      "properties": {
        "amount": {
          "type": "NUMBER",
          "description": "..."
        },
        "accountNumber": {
          "type": "STRING",
          "description": "..."
        },
        "narration": {
          "type": "STRING",
          "description": "..."
        },
        "bankName": {
          "type": "STRING",
          "description": "Bank name exactly as the user stated it, including abbreviations like GTB, Access, Opay, Moniepoint. Null if not provided yet."
        }
      }
    }

response (from gemini):

{
  "accountNumber": "null",
  "amount": 1.23,
  "bankName": "null",
  "narration": "null"
}

Gemini's doc explains the types here: https://ai.google.dev/gemini-api/docs/structured-output?example=recipe#json_schema_support

I already made a workaround myself, but maybe something to look into?
Thank you for your work so far.

[stevechilds]

@ilvalerione - sorry for the ping directly, I did update my closed issue, but I don't know if you get notified or not for closed issues - I have more info on a related StructuredOutput Gemini issue - #522

[ilvalerione]

Hi @stevechilds I read your analysis. I'll deep dive into it in the next days.

[ilvalerione]

@michaelthedev what's the feature you would request. I don't get it from your issue.