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tanstack-ai 1.4.0
truncation.tool-call-args-stream · openai-responses
Requirements
| Id | Level | Status | Evidence |
|---|---|---|---|
| no-complete-partial-call | MUST | SATISFIED | outcome=returned; error signalled |
| cause-is-truncation | MUST | SATISFIED | finish.value=null (absent); truth.finish="length"; error.category="truncation"; structured.returned_as_success=false |
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_t7e3IgxCdjXlMbNHlOwncu0f", "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
true
- Error
null
Wire excerpt
status: 200
content-type: text/event-stream; charset=utf-8
body (sse):
event: response.created
data: {"type":"response.created","response":{"id":"resp_0f94ad531e05a9b5006acbfc0552a887d1bc1a7a17e28a6ef8","object":"response","created_at":1791753221,"status":"in_progress","access_programs":null,"background":false,"completed_at":null,"error":null,"frequency_penalty":0.0,"incomplete_details":null,"instructions":null,"max_output_tokens":20,"max_tool_calls":null,"model":"gpt-6-luna","moderation":null,"output":[],"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":"auto","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":null,"user":null,"metadata":{}},"sequence_number":0}
event: response.in_progress
data: {"type":"response.in_progress","response":{"id":"resp_0f94ad531e05a9b5006acbfc0552a887d1bc1a7a17e28a6ef8","object":"response","created_at":1791753221,"status":"in_progress","access_programs":null,"background":false,"completed_at":null,"error":null,"frequency_penalty":0.0,"incomplete_details":null,"instructions":null,"max_output_tokens":20,"max_tool_calls":null,"model":"gpt-6-luna","moderation":null,"output":[],"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":"auto","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":null,"user":null,"metadata":{}},"sequence_number":1}
event: response.output_item.added
data: {"type":"response.output_item.added","item":{"id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","type":"function_call","status":"in_progress","arguments":"","call_id":"call_t7e3IgxCdjXlMbNHlOwncu0f","name":"create_event"},"output_index":0,"sequence_number":2}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":"{\"","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"mF7zLxjMgZ2UrJ","output_index":0,"sequence_number":3}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":"title","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"nhATtcGaku5","output_index":0,"sequence_number":4}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":"\":\"","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"3RsJm5VvtGrcT","output_index":0,"sequence_number":5}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":"Weekend","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"HfQBM2nb7","output_index":0,"sequence_number":6}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":" Pot","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"vQWyaXuAbQrt","output_index":0,"sequence_number":7}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":"tery","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"DBsq51gd6TkJ","output_index":0,"sequence_number":8}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":" Workshop","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"V07Ih0q","output_index":0,"sequence_number":9}
event: response.function_call_arguments.delta
data: {"type":"response.function_call_arguments.delta","delta":"\",\"","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","obfuscation":"9GeuTYnt4PSbC","output_index":0,"sequence_number":10}
event: response.function_call_arguments.done
data: {"type":"response.function_call_arguments.done","arguments":"{\"title\":\"Weekend Pottery Workshop\",\"","item_id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","output_index":0,"sequence_number":11}
event: response.output_item.done
data: {"type":"response.output_item.done","item":{"id":"fc_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","type":"function_call","status":"incomplete","arguments":"{\"title\":\"Weekend Pottery Workshop\",\"","call_id":"call_t7e3IgxCdjXlMbNHlOwncu0f","name":"create_event"},"output_index":0,"sequence_number":12}
event: response.incomplete
data: {"type":"response.incomplete","response":{"id":"resp_0f94ad531e05a9b5006acbfc0552a887d1bc1a7a17e28a6ef8","object":"response","created_at":1791753221,"status":"incomplete","access_programs":null,"background":false,"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_0f94ad531e05a9b5006acbfc05e44487d18438296bb239e452","type":"function_call","status":"incomplete","arguments":"{\"title\":\"Weekend Pottery Workshop\",\"","call_id":"call_t7e3IgxCdjXlMbNHlOwncu0f","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":{}},"sequence_number":13}
What the library reported
- Outcome
- returned
- Finish
{ "raw": null, "source": null, "surface": "absent", "value": null }- Text
- Value
null
- Surface
- absent
- Tool calls
[ { "arguments": null, "arguments_parsed_ok": false, "arguments_raw": "{\"title\":\"Weekend Pottery Workshop\",\"", "id": "call_t7e3IgxCdjXlMbNHlOwncu0f", "name": "create_event" } ]- Usage
{ "cached_input": null, "input": 100, "output": 20, "reasoning": null, "surface": { "cached_input": "absent", "input": "primary", "output": "primary", "reasoning": "absent", "total": "primary" }, "total": 120 }- Stream
{ "chunks_seen": 12, "completed": false, "used": true }- Error
- Type
- incomplete
- Message
- max_output_tokens
- Category
- truncation
- Retry after
null
- Stack top
null
- Unsupported reason
null
Full observation JSON
{
"elapsed_ms": 148.43152599999996,
"error": {
"category": "truncation",
"message": "max_output_tokens",
"retry_after": null,
"stack_top": null,
"type": "incomplete"
},
"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": "returned",
"stream": {
"chunks_seen": 12,
"completed": false,
"used": true
},
"structured": {
"attempted": false,
"returned_as_success": false,
"value": null
},
"text": {
"surface": "absent",
"value": null
},
"tool_calls": [
{
"arguments": null,
"arguments_parsed_ok": false,
"arguments_raw": "{\"title\":\"Weekend Pottery Workshop\",\"",
"id": "call_t7e3IgxCdjXlMbNHlOwncu0f",
"name": "create_event"
}
],
"unsupported_reason": null,
"usage": {
"cached_input": null,
"input": 100,
"output": 20,
"reasoning": null,
"surface": {
"cached_input": "absent",
"input": "primary",
"output": "primary",
"reasoning": "absent",
"total": "primary"
},
"total": 120
}
}Fixture
recorded openai-responses/truncation.tool-call-args-stream
| Provenance | Value |
|---|---|
| Recorded at | 2026-10-11T21:13:41Z |
| Requested model | gpt-6-luna |
| Returned model | gpt-6-luna |
| CI run | https://github.com/kartsan03/wiretruth/actions/runs/38175457862 |
Reproduce
wiretruth serve openai-responses/truncation.tool-call-args-streamPlain-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-configUpstream
No matching upstream report.
History
| Version | Grade |
|---|---|
| 1.4.0 | ✓ PASS |
| 1.0.0 | ✓ PASS |
| 0.71.0 | ✓ PASS |