✓ PASS

tanstack-ai 1.4.0

stream.missing-finish · ollama-openai

Requirements

Id	Level	Status	Evidence
no-normal-stop	MUST	SATISFIED	outcome=returned; finish.value=null (absent); truth.finish="none"; forbidden finish="stop"
stream-incomplete	MUST	SATISFIED	stream.completed=false; outcome=returned; truth.stream_completed=false

What the provider sent

Finish: none
Raw finish: null
Text: Octopuses rely on their unique physiology to camouflage against the vast array of natural
Tool calls: []
Usage: { "alternatives": {}, "cached_input": null, "input": null, "output": null, "raw": null, "reasoning": null, "total": null }
Stream completed: false
Error: null

Wire excerpt

status: 200
content-type: text/event-stream
body (sse):
data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"role":"assistant","content":"Oct"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":"op"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":"uses"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" rely"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" on"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" their"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" unique"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" physiology"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" to"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" camouflage"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" against"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" the"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" vast"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" array"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" of"},"finish_reason":null}]}


data: {"id":"chatcmpl-554","object":"chat.completion.chunk","created":1791831681,"model":"qwen3.5:0.8b","system_fingerprint":"fp_ollama","choices":[{"index":0,"delta":{"content":" natural"},"finish_reason":null}]}

What the library reported

Outcome

returned

Finish

{
  "raw": null,
  "source": null,
  "surface": "absent",
  "value": null
}

Text

Value: Octopuses rely on their unique physiology to camouflage against the vast array of natural
Surface: primary

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": 20,
  "completed": false,
  "used": true
}

Error

Type: incomplete-stream
Message: Chat Completions stream ended without a finish_reason or usage-only tail
Category: network
Retry after: null
Stack top: null

Unsupported reason

null

Full observation JSON

{
  "elapsed_ms": 142.25194399999992,
  "error": {
    "category": "network",
    "message": "Chat Completions stream ended without a finish_reason or usage-only tail",
    "retry_after": null,
    "stack_top": null,
    "type": "incomplete-stream"
  },
  "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": 20,
    "completed": false,
    "used": true
  },
  "structured": {
    "attempted": false,
    "returned_as_success": false,
    "value": null
  },
  "text": {
    "surface": "primary",
    "value": "Octopuses rely on their unique physiology to camouflage against the vast array of natural"
  },
  "tool_calls": [],
  "unsupported_reason": null,
  "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

derived ollama-openai/stream.missing-finish

Provenance	Value
Transform	strip_finish
Source fixture	ollama-openai/truncation.text-stream
Rationale	The stream ends cleanly without its finish signal.
Evidence	https://github.com/pydantic/pydantic-ai/issues/6610

Reproduce

wiretruth serve ollama-openai/stream.missing-finish

Plain-library snippet from the shim manifest.

openaiCompatible({ name: 'ollama', baseURL: WIRETRUTH_BASE_URL_OLLAMA_OPENAI, apiKey, models: [model] })(model); Chat Completions is the documented default for Ollama /v1. https://tanstack.com/ai/latest/docs/adapters/openai-compatible

Upstream

No matching upstream report.

History

Version	Grade
1.4.0	✓ PASS
1.0.0	✓ PASS
0.71.0	✓ PASS