const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    messages: [{role: 'user', content: '<string>'}],
    max_tokens: 2,
    system: '<string>',
    temperature: 0.5,
    top_p: 0.5,
    top_k: 2,
    tools: [{name: '<string>', description: '<string>', input_schema: {}}],
    tool_choice: {},
    stream: true,
    metadata: {},
    reasoning: {effort: 'medium', summary: 'auto', enabled: true, max_tokens: 1},
    stop_sequences: ['<string>'],
    provider_options: {
      openai: {
        context_management: {type: 'compaction', compact_threshold: 123},
        prompt_cache_retention: '<string>'
      },
      anthropic: {cache_control: {type: '<string>', ttl: '<string>', scope: '<string>'}},
      google: {
        cache_control: {type: '<string>', ttl: '<string>', scope: '<string>'},
        cached_content: '<string>',
        cache_ttl: '<string>'
      }
    },
    usage: true,
    meta: true,
    echo_upstream_request: true,
    debug: {
      enabled: true,
      return_upstream_request: true,
      return_upstream_response: true,
      trace: true,
      trace_level: 'summary'
    },
    provider: {
      order: ['<string>'],
      only: ['<string>'],
      ignore: ['<string>'],
      include_alpha: true
    }
  })
};

fetch('https://api.phaseo.app/v1/messages', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "id": "<string>",
  "type": "<string>",
  "role": "assistant",
  "model": "<string>",
  "content": [
    {
      "type": "text",
      "text": "<string>",
      "cache_control": {
        "type": "<string>",
        "ttl": "<string>",
        "scope": "<string>"
      },
      "source": {
        "type": "<string>",
        "media_type": "<string>",
        "data": "<string>",
        "url": "<string>"
      },
      "id": "<string>",
      "name": "<string>",
      "input": {},
      "tool_use_id": "<string>",
      "content": "<string>"
    }
  ],
  "stop_reason": "<string>",
  "stop_sequence": "<string>",
  "usage": {
    "input_tokens": 123,
    "output_tokens": 123
  }
}