Tool calling models

Requirements and limitations

Your application must validate arguments, execute tools, and return tool results. Tool support does not guarantee reliable multi-step agent behavior.

Only active chat models with explicit support are included. Missing capability values remain unknown; top-level values take precedence over nested values. Image input also establishes vision support.

Example request

POST https://api.llm7.io/v1/chat/completions
Authorization: Bearer YOUR_LLM7_API_KEY
Content-Type: application/json

{
  "model": "DeepSeek-V4-Flash-0731",
  "messages": [
    {
      "role": "user",
      "content": "What is the weather in London?"
    }
  ],
  "tools": [
    {
      "type": "function",
      "function": {
        "name": "get_weather",
        "description": "Get weather for a city",
        "parameters": {
          "type": "object",
          "properties": {
            "city": {
              "type": "string"
            }
          },
          "required": [
            "city"
          ]
        }
      }
    }
  ]
}

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