curl --request PUT \
  --url https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fields": [
    {
      "key": "email",
      "type": "string",
      "required": true
    },
    {
      "key": "plan",
      "type": "enum",
      "required": false,
      "enumValues": [
        "free",
        "pro"
      ],
      "fallbackValue": "free",
      "description": "Billing plan at signup time."
    },
    {
      "key": "order",
      "type": "object",
      "required": false,
      "children": [
        {
          "key": "total",
          "type": "float",
          "required": true
        }
      ]
    }
  ]
}
'

import requests

url = "https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract"

payload = { "fields": [
        {
            "key": "email",
            "type": "string",
            "required": True
        },
        {
            "key": "plan",
            "type": "enum",
            "required": False,
            "enumValues": ["free", "pro"],
            "fallbackValue": "free",
            "description": "Billing plan at signup time."
        },
        {
            "key": "order",
            "type": "object",
            "required": False,
            "children": [
                {
                    "key": "total",
                    "type": "float",
                    "required": True
                }
            ]
        }
    ] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    fields: [
      {key: 'email', type: 'string', required: true},
      {
        key: 'plan',
        type: 'enum',
        required: false,
        enumValues: ['free', 'pro'],
        fallbackValue: 'free',
        description: 'Billing plan at signup time.'
      },
      {
        key: 'order',
        type: 'object',
        required: false,
        children: [{key: 'total', type: 'float', required: true}]
      }
    ]
  })
};

fetch('https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'fields' => [
        [
                'key' => 'email',
                'type' => 'string',
                'required' => true
        ],
        [
                'key' => 'plan',
                'type' => 'enum',
                'required' => false,
                'enumValues' => [
                                'free',
                                'pro'
                ],
                'fallbackValue' => 'free',
                'description' => 'Billing plan at signup time.'
        ],
        [
                'key' => 'order',
                'type' => 'object',
                'required' => false,
                'children' => [
                                [
                                                                'key' => 'total',
                                                                'type' => 'float',
                                                                'required' => true
                                ]
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract"

	payload := strings.NewReader("{\n  \"fields\": [\n    {\n      \"key\": \"email\",\n      \"type\": \"string\",\n      \"required\": true\n    },\n    {\n      \"key\": \"plan\",\n      \"type\": \"enum\",\n      \"required\": false,\n      \"enumValues\": [\n        \"free\",\n        \"pro\"\n      ],\n      \"fallbackValue\": \"free\",\n      \"description\": \"Billing plan at signup time.\"\n    },\n    {\n      \"key\": \"order\",\n      \"type\": \"object\",\n      \"required\": false,\n      \"children\": [\n        {\n          \"key\": \"total\",\n          \"type\": \"float\",\n          \"required\": true\n        }\n      ]\n    }\n  ]\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.put("https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"fields\": [\n    {\n      \"key\": \"email\",\n      \"type\": \"string\",\n      \"required\": true\n    },\n    {\n      \"key\": \"plan\",\n      \"type\": \"enum\",\n      \"required\": false,\n      \"enumValues\": [\n        \"free\",\n        \"pro\"\n      ],\n      \"fallbackValue\": \"free\",\n      \"description\": \"Billing plan at signup time.\"\n    },\n    {\n      \"key\": \"order\",\n      \"type\": \"object\",\n      \"required\": false,\n      \"children\": [\n        {\n          \"key\": \"total\",\n          \"type\": \"float\",\n          \"required\": true\n        }\n      ]\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://brew.new/api/v1/automations/triggers/{triggerEventId}/contract")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"fields\": [\n    {\n      \"key\": \"email\",\n      \"type\": \"string\",\n      \"required\": true\n    },\n    {\n      \"key\": \"plan\",\n      \"type\": \"enum\",\n      \"required\": false,\n      \"enumValues\": [\n        \"free\",\n        \"pro\"\n      ],\n      \"fallbackValue\": \"free\",\n      \"description\": \"Billing plan at signup time.\"\n    },\n    {\n      \"key\": \"order\",\n      \"type\": \"object\",\n      \"required\": false,\n      \"children\": [\n        {\n          \"key\": \"total\",\n          \"type\": \"float\",\n          \"required\": true\n        }\n      ]\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "subjectKind": "trigger",
  "subjectId": "tri_signup",
  "source": "stored",
  "typeName": "UserSignedUpPayload",
  "contractHash": "22545d11e1d174ba0717ed37c9c4b460c96bed51ae31ea0af18266ebba30f76a",
  "version": 2,
  "enforcement": "off",
  "fields": [
    {
      "key": "email",
      "type": "string",
      "required": true
    },
    {
      "key": "plan",
      "type": "enum",
      "required": false,
      "enumValues": [
        "free",
        "pro"
      ],
      "fallbackValue": "free"
    },
    {
      "key": "order",
      "type": "object",
      "required": false,
      "children": [
        {
          "key": "total",
          "type": "float",
          "required": true
        }
      ]
    }
  ]
}

{
  "error": {
    "code": "INVALID_REQUEST",
    "type": "invalid_request",
    "message": "Trigger contracts must declare a top-level required \"email\" string field.",
    "suggestion": "Fix the contract fields and retry; POST …/contract/validate never writes and returns per-field verdicts.",
    "docs": "https://docs.brew.new/api-reference/api/errors",
    "param": "fields"
  }
}

{
  "error": {
    "code": "INVALID_API_KEY",
    "type": "authentication_error",
    "message": "The provided API key is invalid.",
    "suggestion": "Check the API key format and retry with a valid active key.",
    "docs": "https://docs.brew.new/api-reference/api/authentication"
  }
}

{
  "error": {
    "code": "INSUFFICIENT_PERMISSIONS",
    "type": "authorization_error",
    "message": "The caller does not have the required permission.",
    "suggestion": "Use an API key or session with the required permission.",
    "docs": "https://docs.brew.new/api-reference/api/authentication",
    "param": "automations"
  }
}

{
  "error": {
    "code": "TRIGGER_EVENT_NOT_FOUND",
    "type": "not_found",
    "message": "Trigger event 'tri_xxx' was not found.",
    "suggestion": "List triggers with GET /v1/automations/triggers.",
    "docs": "https://docs.brew.new/api-reference/api/errors",
    "param": "triggerEventId"
  }
}

{
  "error": {
    "code": "RATE_LIMITED",
    "type": "rate_limit",
    "message": "Too many requests.",
    "suggestion": "Wait for the retry window before sending another request.",
    "docs": "https://docs.brew.new/api-reference/api/rate-limits",
    "retryAfter": 42
  }
}

{
  "error": {
    "code": "INTERNAL_ERROR",
    "type": "internal_error",
    "message": "An unexpected error occurred.",
    "suggestion": "Retry the request. If it keeps failing, contact support.",
    "docs": "https://docs.brew.new/api-reference/api/errors"
  }
}