– UNSUPPORTED

tanstack-ai 1.4.0

truncation.tool-call-args · openai-responses

Back to results · Scenario

Requirements

IdLevelStatusEvidence

Notes

  • TanStack AI's chat() always requests a streamed response (stream: false collects the stream), so it never sends the non-streamed request this fixture replays. (https://tanstack.com/ai/latest/docs/api/ai#chat-options)

What the provider sent

Finish
length
Raw finish
max_output_tokens
Text
null
Tool calls
[
  {
    "arguments": null,
    "arguments_parsed_ok": false,
    "arguments_raw": "{\"title\":\"Weekend Pottery Workshop\",\"",
    "id": "call_lLsu7YMQmuJzYwIjUOdF8uic",
    "name": "create_event"
  }
]
Usage
{
  "alternatives": {},
  "cached_input": 0,
  "input": 100,
  "output": 20,
  "raw": {
    "input_tokens": 100,
    "input_tokens_details": {
      "cache_write_tokens": 0,
      "cached_tokens": 0
    },
    "output_tokens": 20,
    "output_tokens_details": {
      "reasoning_tokens": 0
    },
    "total_tokens": 120
  },
  "reasoning": 0,
  "total": 120
}
Stream completed
null
Error
null
Wire excerpt
status: 200
content-type: application/json
body (json):
{
  "id": "resp_04ed45eb9c649570006acbfc064e7087d1bc256e42548bb4ae",
  "object": "response",
  "created_at": 1791753222,
  "status": "incomplete",
  "access_programs": null,
  "background": false,
  "billing": {
    "payer": "developer"
  },
  "completed_at": null,
  "error": null,
  "frequency_penalty": 0.0,
  "incomplete_details": {
    "reason": "max_output_tokens"
  },
  "instructions": null,
  "max_output_tokens": 20,
  "max_tool_calls": null,
  "model": "gpt-6-luna",
  "moderation": null,
  "output": [
    {
      "id": "fc_04ed45eb9c649570006acbfc06e08087d1a25f7b11c8d83e05",
      "type": "function_call",
      "status": "incomplete",
      "arguments": "{\"title\":\"Weekend Pottery Workshop\",\"",
      "call_id": "call_lLsu7YMQmuJzYwIjUOdF8uic",
      "name": "create_event"
    }
  ],
  "parallel_tool_calls": true,
  "presence_penalty": 0.0,
  "previous_response_id": null,
  "prompt_cache_key": null,
  "prompt_cache_retention": "24h",
  "reasoning": {
    "context": "all_turns",
    "effort": "none",
    "mode": "standard",
    "summary": null
  },
  "safety_identifier": null,
  "service_tier": "default",
  "store": true,
  "temperature": 1.0,
  "text": {
    "format": {
      "type": "text"
    },
    "verbosity": "medium"
  },
  "tool_choice": "required",
  "tool_usage": {
    "image_gen": {
      "input_tokens": 0,
      "input_tokens_details": {
        "image_tokens": 0,
        "text_tokens": 0
      },
      "output_tokens": 0,
      "output_tokens_details": {
        "image_tokens": 0,
        "text_tokens": 0
      },
      "total_tokens": 0
    },
    "web_search": {
      "num_requests": 0
    }
  },
  "tools": [
    {
      "type": "function",
      "description": "Create a calendar event.",
      "name": "create_event",
      "output_schema": null,
      "parameters": {
        "type": "object",
        "properties": {
          "title": {
            "type": "string"
          },
          "date": {
            "type": "string",
            "description": "YYYY-MM-DD"
          },
          "city": {
            "type": "string"
          },
          "attendees": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        },
        "required": [
          "title",
          "date",
          "city",
          "attendees"
        ],
        "additionalProperties": false
      },
      "strict": true
    }
  ],
  "top_logprobs": 0,
  "top_p": 0.98,
  "truncation": "disabled",
  "usage": {
    "input_tokens": 100,
    "input_tokens_details": {
      "cache_write_tokens": 0,
      "cached_tokens": 0
    },
    "output_tokens": 20,
    "output_tokens_details": {
      "reasoning_tokens": 0
    },
    "total_tokens": 120
  },
  "user": null,
  "metadata": {}
}

What the library reported

Outcome
unsupported
Finish
{
  "raw": null,
  "source": null,
  "surface": "absent",
  "value": null
}
Text
Value
null
Surface
absent
Tool calls
[]
Usage
{
  "cached_input": null,
  "input": null,
  "output": null,
  "reasoning": null,
  "surface": {
    "cached_input": "absent",
    "input": "absent",
    "output": "absent",
    "reasoning": "absent",
    "total": "absent"
  },
  "total": null
}
Stream
{
  "chunks_seen": null,
  "completed": null,
  "used": false
}
Error
null
Unsupported reason
TanStack AI's chat() always requests a streamed response (stream: false collects the stream), so it never sends the non-streamed request this fixture replays. https://tanstack.com/ai/latest/docs/api/ai#chat-options
Full observation JSON
{
  "elapsed_ms": 1.1765009999999734,
  "error": null,
  "finish": {
    "raw": null,
    "source": null,
    "surface": "absent",
    "value": null
  },
  "format": "wiretruth.observation/v1",
  "library": {
    "api": "chat",
    "language": "javascript",
    "name": "tanstack-ai",
    "version": "1.4.0"
  },
  "notes": [],
  "outcome": "unsupported",
  "stream": {
    "chunks_seen": null,
    "completed": null,
    "used": false
  },
  "structured": {
    "attempted": false,
    "returned_as_success": false,
    "value": null
  },
  "text": {
    "surface": "absent",
    "value": null
  },
  "tool_calls": [],
  "unsupported_reason": "TanStack AI's chat() always requests a streamed response (stream: false collects the stream), so it never sends the non-streamed request this fixture replays. https://tanstack.com/ai/latest/docs/api/ai#chat-options",
  "usage": {
    "cached_input": null,
    "input": null,
    "output": null,
    "reasoning": null,
    "surface": {
      "cached_input": "absent",
      "input": "absent",
      "output": "absent",
      "reasoning": "absent",
      "total": "absent"
    },
    "total": null
  }
}

Fixture

recorded openai-responses/truncation.tool-call-args

ProvenanceValue
Recorded at2026-10-11T21:13:42Z
Requested modelgpt-6-luna
Returned modelgpt-6-luna
CI runhttps://github.com/kartsan03/wiretruth/actions/runs/38175457862

Reproduce

wiretruth serve openai-responses/truncation.tool-call-args

Plain-library snippet from the shim manifest.

createOpenaiChat(model, apiKey, { baseURL: WIRETRUTH_BASE_URL_OPENAI_RESPONSES }); POST /v1/responses (the default OpenAI text adapter). https://tanstack.com/ai/latest/docs/adapters/openai#createopenaichat-model-apikey-config

Upstream

No matching upstream report.

History

VersionGrade
1.4.0– UNSUPPORTED
1.0.0– UNSUPPORTED
0.71.0– UNSUPPORTED