Update a custom function

Updates custom functions description or code. You cannot change the name of the custom function.

Make sure to use the same function name in the function's code. Otherwise, you get an IM005 error.

Make validates the custom function's code first. You get an IM005 error if the code validation fails. The validation might fail because of a syntax error in the function's code or when the code uses a JavaScript feature that Make doesn't support. Check the custom functions limitations in the Make Help center.

PATCHhttps://eu1.make.com/api/v2/functions/{functionId}

Authorization

token

Path parameters

functionId*integer

The ID of the custom function.

Example: 44

Body

application/json

descriptionstring

The description of the custom function. You can use maximum of 128 characters.

codestring

The code of the custom function.

Response

200

Successful response

Body

application/json

functionobject

Request

JavaScriptCurlPython

const response = await fetch('https://eu1.make.com/api/v2/functions/{functionId}', {
    method: 'PATCH',
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      "description": "<p>Greet user instead of greeting the World.</p>",
      "code": "function greeter(name){return concat('Hello ', name)",
      "__$markdownParsed": true
    }),
});
const data = await response.json();

Response

200

{
  "function": {
    "id": 0,
    "name": "text",
    "description": "text",
    "code": "text",
    "args": "text",
    "updatedAt": "2025-01-11T06:15:57.885Z",
    "createdByUser": {
      "id": 0,
      "name": "text",
      "email": "text"
    },
    "createdAt": "2025-01-11T06:15:57.885Z"
  }
}