Error - Item 'rs_' of type 'reasoning' was provided without its required following item

API Bugs
1

Hey guys!

I’m trying to make the following request to the /v1/responses endpoint via the Vercel AI SDK. This is my request body -

{
    "model": "o3",
    "input": [
      {
        "role": "developer",
        "content": "system prompt"
      },
      {
        "role": "user",
        "content": [
          {
            "type": "input_text",
            "text": "User Input"
          }
        ]
      },
      {
        "type": "reasoning",
        "id": "rs_686832016440819aae34aca212b73f790919064fb8db1403",
        "encrypted_content": null,
        "summary": [
          {
            "type": "summary_text",
            "text": "reasoning summary"
          }
        ]
      },
      {
        "role": "assistant",
        "content": [
          {
            "type": "output_text",
            "text": "Output Text"
          }
        ]
      },
      {
        "role": "user",
        "content": [
          {
            "type": "input_text",
            "text": "Input Text"
          }
        ]
      }
    ],
    "reasoning": {
      "summary": "detailed"
    },
    "tools": [
      {
        "type": "function",
        "name": "toolName",
        "description": "Tool Description",
        "parameters": {
          "type": "object",
          "properties": {},
          "additionalProperties": false,
          "$schema": "http://json-schema.org/draft-07/schema#"
        },
        "strict": false
      }
    ],
    "tool_choice": "auto",
    "stream": true
  }

This is the whole response body -

{
	"error": {
		"message": "Item 'rs_686832016440819aae34aca212b73f790919064fb8db1403' of type 'reasoning' was provided without its required following item.",
		"type": "invalid_request_error",
		"param": "input",
		"code": null
	}
}

I’m not sure what the exact issue is. Please let me know if anyone else has faced a smilar issue and how to fix this. Its not really clear from the error message what exact field is missing from ‘reasoning’.

1 Like