POST
/
v1beta
/
models
/
{model}
:generateContent
curl -X POST "https://api.example.com/v1beta/models/gemini-2.5-pro:generateContent?key=YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "Calculate the factorial of 10"
          }
        ]
      }
    ],
    "tools": [
      {
        "codeExecution": {}
      }
    ]
  }'

{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "executableCode": {
              "language": "PYTHON",
              "code": "import math\nresult = math.factorial(10)\nprint(result)"
            }
          },
          {
            "codeExecutionResult": {
              "outcome": "OUTCOME_OK",
              "output": "3628800"
            }
          },
          {
            "text": "The factorial of 10 is 3,628,800."
          }
        ],
        "role": "model"
      },
      "finishReason": "STOP"
    }
  ]
}
Official documentation: https://ai.google.dev/gemini-api/docs/code-execution
Enable Gemini models to write and execute code to solve problems, perform calculations, and process data dynamically.

​
Request Parameters

​
key
string
required
API key.
​
contents
array
required
Content array.Each content object contains:
  • role (string): Role (user or model)
  • parts (array): Content parts array
​
tools
array
Tools configuration including code execution.
  • codeExecution (object): Enable code execution capability
​
generationConfig
object
Generation configuration.
  • temperature (number): Sampling temperature
  • topP (number): Nucleus sampling parameter

​
Response

Returns the result of code execution along with any generated output. 
curl -X POST "https://api.example.com/v1beta/models/gemini-2.5-pro:generateContent?key=YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "Calculate the factorial of 10"
          }
        ]
      }
    ],
    "tools": [
      {
        "codeExecution": {}
      }
    ]
  }'

{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "executableCode": {
              "language": "PYTHON",
              "code": "import math\nresult = math.factorial(10)\nprint(result)"
            }
          },
          {
            "codeExecutionResult": {
              "outcome": "OUTCOME_OK",
              "output": "3628800"
            }
          },
          {
            "text": "The factorial of 10 is 3,628,800."
          }
        ],
        "role": "model"
      },
      "finishReason": "STOP"
    }
  ]
}