curl --request POST \
  --url https://api.example.com/api/v2/tenants/{tenant}/databases/{database}/collections/{collection_id}/functions/attach \
  --header 'Content-Type: application/json' \
  --header 'x-chroma-token: <api-key>' \
  --data '
{
  "function_id": "1e30d217-3d78-4f8c-b244-79381dc6a254",
  "name": "my_function",
  "output_collection": "output_collection_name",
  "params": {}
}
'

import requests

url = "https://api.example.com/api/v2/tenants/{tenant}/databases/{database}/collections/{collection_id}/functions/attach"

payload = {
    "function_id": "1e30d217-3d78-4f8c-b244-79381dc6a254",
    "name": "my_function",
    "output_collection": "output_collection_name",
    "params": {}
}
headers = {
    "x-chroma-token": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-chroma-token': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    function_id: '1e30d217-3d78-4f8c-b244-79381dc6a254',
    name: 'my_function',
    output_collection: 'output_collection_name',
    params: {}
  })
};

fetch('https://api.example.com/api/v2/tenants/{tenant}/databases/{database}/collections/{collection_id}/functions/attach', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

false

{
  "attached_function": {
    "function_name": "<string>",
    "id": "<string>",
    "name": "<string>"
  },
  "created": true
}

{
  "error": "<string>",
  "message": "<string>"
}

{
  "error": "<string>",
  "message": "<string>"
}