You can attach a Schema Validation doc to your Collection. This helps to validate the records based on the Schema Doc validation rules.

Root
https://api.jsonbin.io/v3
Route
/c/<COLLECTION_ID>/schemadoc/add
Request Type
PUT
Request Headers
Header Value Required
X-Master-Key <YOUR_SECRET_KEY> Yes
X-Schema-Doc-Id <SCHEMA_ID>> Yes
X-Master-Key

X-Master-Key is required to Update a Collection. You can find your X-Master-Key on the API Keys page after signing-in.

X-Schema-Doc-Id

You need to pass X-Schema-Doc-Id header with the Schema Doc ID which you need to attach to the Collection.

Basic Code Samples
curl -v\
  -H "X-Schema-Doc-Id: <SCHEMA_DOC_ID>" \
  -H "X-Master-key: <YOUR_API_KEY>" \
  --request PUT \
    https://api.jsonbin.io/v3/c/<COLLECTION_ID>/schemadoc/add
let req = new XMLHttpRequest();

req.onreadystatechange = () => {
  if (req.readyState == XMLHttpRequest.DONE) {
    console.log(req.responseText);
  }
};

req.open("PUT", "https://api.jsonbin.io/v3/c/<COLLECTION_ID>/schemadoc/add", true);
req.setRequestHeader("X-Schema-Doc-Id", "<SCHEMA_DOC_ID>");
req.setRequestHeader("X-Master-Key", "<YOUR_API_KEY>");
req.send();
import requests
url = 'https://api.jsonbin.io/v3/c/<COLLECTION_ID>/schemadoc/add'
headers = {
  'X-Schema-Doc-Id': '<SCHEMA_DOC_ID>',
  'X-Master-Key': '<YOUR_API_KEY>'
}
data = {}

req = requests.post(url, json=data, headers=headers)
print(req.text)
require 'net/http'
require 'json'

uri = URI("https://api.jsonbin.io/v3/c/<COLLECTION_ID>/schemadoc/add")
res = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
  req = Net::HTTP::Put.new(uri)
  req['X-Schema-Doc-Id'] = '<SCHEMA_DOC_ID>'
  req['X-Master-Key'] = '<YOUR_API_KEY>'
  
  http.request(req)
end

puts res.body
Request Response
Success
200
{
   "collectionName": "<COLLECTION_NAME>",
   "schemaDocId": "<ATTACHED_SCHEMA_DOC_ID",
   "metadata": {
      "id": "<COLLECTION_ID>",
      "createdAt": "2020-12-16T20:13:22.116Z"
    }
}
Error
400, 401, 403
{
  "message": "<ERROR_MESSAGE>"
}
Status Code Error Message
401 Unauthorized
You need to pass X-Master-Key in the header
400 Bad Request
Invalid Collection Id provided
400 Bad Request
You need to pass X-Schema-Doc-Id in the header
400 Bad Request
Invalid Schema Id provided
404 Not Found
Collection not found
401 Unauthorized
Invalid X-Master-Key provided
401 Unauthorized
You cannot attach a Schema Doc to Validate your Collection. Consider upgrading to the Pro plan.
403 Forbidden
You cannot create more than 10 collections. Please delete a Collection and try again.
404 Not Found
Schema Doc not found
403 Forbidden
Requests exhausted. Buy additional requests at https://jsonbin.io/pricing