invokeAgent through laravel returns empty array with no data but Http status code is 200

Question

Request:

$result = $this->bedrockAgentRuntimeClient->invokeAgent([
                'agentAliasId' => '7KE1CTD7K9',
                'agentId' => '1J7WQD0M4G',
                'sessionId' => 'abc',
                'inputText' => 'which country won soccer in 2023?'
            ]);
            return $result;

Response:
Model Data
----------
Data can be retrieved from the model object using the get() method of the
model (e.g., `$result->get($key)`) or "accessing the result like an
associative array (e.g. `$result['key']`). You can also execute JMESPath
expressions on the result data using the search() method.

{
"completion": {},
"contentType": "application\/json",
"sessionId": "abc",
"@metadata": {
**"statusCode": 200,**
"effectiveUri":
"https:\/\/bedrock-agent-runtime.us-east-1.amazonaws.com\/agents\/1J7WQD0M4G\/agentAliases\/7KE1CTD7K9\/sessions\/abc\/text",
"headers": {
"date": "Wed, 17 Apr 2024 13:55:56 GMT",
"content-type": "application\/json",
"transfer-encoding": "chunked",
"connection": "keep-alive",
"x-amzn-requestid": "88d1e728-129d-49fc-9f4b-380bd85f3995",
"x-amz-bedrock-agent-session-id": "abc",
"x-amzn-bedrock-agent-content-type": "application\/json"
},
"transferStats": {
"http": [
[]
]
}
}
}

Answer

Hello Guru,

I apologize for the delayed response. I have reviewed your issue, and it seems unusual that the response is empty, as the syntax appears to be correct.

Could you please try setting `enableTrace` to `true` in your `invokeAgent` call? This will allow you to track the agent's reasoning process and better understand why the response is empty.

```php
$result = $client->invokeAgent([
    'agentAliasId' => '7KE1CTD7K9',
    'agentId' => '1J7WQD0M4G',
    'enableTrace' => true,
    'inputText' => 'which country won soccer in 2023?',
    'sessionId' => 'abc'
]);
```

---

> 🍀 It seems likely that there's a problem with the setup or content of the agent's configuration or knowledge base.

---

##### Key Source:
- [Agents for Amazon Bedrock Runtime](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-bedrock-agent-runtime-2023-07-26.html#invokeagent)

invokeAgent through laravel returns empty array with no data but Http status code is 200

Response: Model Data

Key Source:

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