=== tool-named-openai ===
--- INPUT  (POST chat, request.json) ---
{
  "model": "zai-org/GLM-5.3",
  "messages": [
    {
      "role": "user",
      "content": "Use add_numbers to add 17 and 25."
    }
  ],
  "max_tokens": 1024,
  "tools": [
    {
      "type": "function",
      "function": {
        "name": "add_numbers",
        "description": "Add two integers",
        "parameters": {
          "type": "object",
          "properties": {
            "a": {
              "type": "integer"
            },
            "b": {
              "type": "integer"
            }
          },
          "required": [
            "a",
            "b"
          ],
          "additionalProperties": false
        }
      }
    }
  ],
  "tool_choice": {
    "type": "function",
    "function": {
      "name": "add_numbers"
    }
  },
  "stream": false,
  "reasoning_effort": "none"
}

--- OUTPUT (HTTP 200, 2.6 s, pass=True) ---
{"id":"63db63aa60db440b8262678cdb161d45","choices":[{"index":0,"message":{"content":null,"refusal":null,"tool_calls":[{"id":"call_69bf469014954269b7afd225","type":"function","function":{"name":"add_numbers","arguments":"{\"a\": 17, \"b\": 25}"}}],"role":"assistant"},"finish_reason":"tool_calls","logprobs":null}],"created":1792329983,"model":"zai-org/GLM-5.3","object":"chat.completion","usage":{"prompt_tokens":174,"completion_tokens":17,"total_tokens":191,"prompt_tokens_details":{"cached_tokens":128}}}

=== tool-named-openai-roundtrip ===
--- INPUT  (POST chat, request.json) ---
{
  "model": "zai-org/GLM-5.3",
  "messages": [
    {
      "role": "user",
      "content": "Use add_numbers to add 17 and 25."
    },
    {
      "role": "assistant",
      "content": null,
      "tool_calls": [
        {
          "id": "call_69bf469014954269b7afd225",
          "type": "function",
          "function": {
            "name": "add_numbers",
            "arguments": "{\"a\": 17, \"b\": 25}"
          }
        }
      ]
    },
    {
      "role": "tool",
      "tool_call_id": "call_69bf469014954269b7afd225",
      "content": "42"
    },
    {
      "role": "user",
      "content": "Reply with exactly 42."
    }
  ],
  "max_tokens": 1024,
  "tools": [
    {
      "type": "function",
      "function": {
        "name": "add_numbers",
        "description": "Add two integers",
        "parameters": {
          "type": "object",
          "properties": {
            "a": {
              "type": "integer"
            },
            "b": {
              "type": "integer"
            }
          },
          "required": [
            "a",
            "b"
          ],
          "additionalProperties": false
        }
      }
    }
  ],
  "tool_choice": "none",
  "stream": false,
  "reasoning_effort": "none"
}

--- OUTPUT (HTTP 200, 2.5 s, pass=True) ---
{"id":"116cde1a92e94998a8a735e7464ed288","choices":[{"index":0,"message":{"content":"42","refusal":null,"role":"assistant"},"finish_reason":"stop","logprobs":null}],"created":1792329986,"model":"zai-org/GLM-5.3","object":"chat.completion","usage":{"prompt_tokens":47,"completion_tokens":2,"total_tokens":49,"prompt_tokens_details":{"cached_tokens":0}}}