curl --request POST \
  --url https://api.natural.com/customers/invitations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "attributes": {
      "recipients": [
        {
          "type": "email",
          "value": "ops@acme.com"
        }
      ],
      "agents": [
        {
          "agentId": "agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f",
          "permissions": [
            "payments.read"
          ],
          "limits": {
            "perTransaction": 100000
          }
        }
      ],
      "expiresAt": "2026-01-12T10:15:00.000Z",
      "message": "We use Natural to let our agents help manage payments for your business.",
      "tags": {
        "campaign": "q3_reactivation"
      }
    }
  }
}
'

import requests

url = "https://api.natural.com/customers/invitations"

payload = { "data": { "attributes": {
            "recipients": [
                {
                    "type": "email",
                    "value": "ops@acme.com"
                }
            ],
            "agents": [
                {
                    "agentId": "agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f",
                    "permissions": ["payments.read"],
                    "limits": { "perTransaction": 100000 }
                }
            ],
            "expiresAt": "2026-01-12T10:15:00.000Z",
            "message": "We use Natural to let our agents help manage payments for your business.",
            "tags": { "campaign": "q3_reactivation" }
        } } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    data: {
      attributes: {
        recipients: [{type: 'email', value: 'ops@acme.com'}],
        agents: [
          {
            agentId: 'agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f',
            permissions: ['payments.read'],
            limits: {perTransaction: 100000}
          }
        ],
        expiresAt: '2026-01-12T10:15:00.000Z',
        message: 'We use Natural to let our agents help manage payments for your business.',
        tags: {campaign: 'q3_reactivation'}
      }
    }
  })
};

fetch('https://api.natural.com/customers/invitations', 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://api.natural.com/customers/invitations",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'data' => [
        'attributes' => [
                'recipients' => [
                                [
                                                                'type' => 'email',
                                                                'value' => 'ops@acme.com'
                                ]
                ],
                'agents' => [
                                [
                                                                'agentId' => 'agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f',
                                                                'permissions' => [
                                                                                                                                'payments.read'
                                                                ],
                                                                'limits' => [
                                                                                                                                'perTransaction' => 100000
                                                                ]
                                ]
                ],
                'expiresAt' => '2026-01-12T10:15:00.000Z',
                'message' => 'We use Natural to let our agents help manage payments for your business.',
                'tags' => [
                                'campaign' => 'q3_reactivation'
                ]
        ]
    ]
  ]),
  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://api.natural.com/customers/invitations"

	payload := strings.NewReader("{\n  \"data\": {\n    \"attributes\": {\n      \"recipients\": [\n        {\n          \"type\": \"email\",\n          \"value\": \"ops@acme.com\"\n        }\n      ],\n      \"agents\": [\n        {\n          \"agentId\": \"agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f\",\n          \"permissions\": [\n            \"payments.read\"\n          ],\n          \"limits\": {\n            \"perTransaction\": 100000\n          }\n        }\n      ],\n      \"expiresAt\": \"2026-01-12T10:15:00.000Z\",\n      \"message\": \"We use Natural to let our agents help manage payments for your business.\",\n      \"tags\": {\n        \"campaign\": \"q3_reactivation\"\n      }\n    }\n  }\n}")

	req, _ := http.NewRequest("POST", 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.post("https://api.natural.com/customers/invitations")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"attributes\": {\n      \"recipients\": [\n        {\n          \"type\": \"email\",\n          \"value\": \"ops@acme.com\"\n        }\n      ],\n      \"agents\": [\n        {\n          \"agentId\": \"agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f\",\n          \"permissions\": [\n            \"payments.read\"\n          ],\n          \"limits\": {\n            \"perTransaction\": 100000\n          }\n        }\n      ],\n      \"expiresAt\": \"2026-01-12T10:15:00.000Z\",\n      \"message\": \"We use Natural to let our agents help manage payments for your business.\",\n      \"tags\": {\n        \"campaign\": \"q3_reactivation\"\n      }\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.natural.com/customers/invitations")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"attributes\": {\n      \"recipients\": [\n        {\n          \"type\": \"email\",\n          \"value\": \"ops@acme.com\"\n        }\n      ],\n      \"agents\": [\n        {\n          \"agentId\": \"agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f\",\n          \"permissions\": [\n            \"payments.read\"\n          ],\n          \"limits\": {\n            \"perTransaction\": 100000\n          }\n        }\n      ],\n      \"expiresAt\": \"2026-01-12T10:15:00.000Z\",\n      \"message\": \"We use Natural to let our agents help manage payments for your business.\",\n      \"tags\": {\n        \"campaign\": \"q3_reactivation\"\n      }\n    }\n  }\n}"

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

{
  "data": [
    {
      "type": "agentDelegationInvitation",
      "id": "adi_550e8400e29b41d4a716446655440000",
      "attributes": {
        "developerName": "Acme Co",
        "email": "ops@acme.com",
        "phone": null,
        "url": "https://www.natural.com/connect/adi_550e8400e29b41d4a716446655440000",
        "agentName": "Invoice Agent",
        "permissions": [
          "payments.read"
        ],
        "limits": {
          "perTransaction": 100000
        },
        "status": "PENDING",
        "effectiveStatus": "PENDING",
        "expiresAt": "2026-01-12T10:15:00.000Z",
        "acceptedAt": null,
        "declinedAt": null,
        "cancelReason": null,
        "tags": {
          "campaign": "q3_reactivation"
        },
        "createdAt": "2026-01-05T10:15:00.000Z",
        "updatedAt": "2026-01-05T10:15:00.000Z"
      },
      "relationships": {
        "agent": {
          "data": {
            "type": "agent",
            "id": "agt_3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f"
          }
        },
        "customerParty": {
          "data": null
        }
      }
    }
  ],
  "meta": {
    "failedRecipients": []
  }
}

{
  "errors": [
    {
      "code": "invalid_value",
      "detail": "The information you entered isn't valid. Please check it and try again.",
      "status": "400",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "unauthenticated",
      "detail": "Authentication is required.",
      "status": "401",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "forbidden",
      "detail": "You do not have permission to perform this action.",
      "status": "403",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "not_found",
      "detail": "The requested resource was not found.",
      "status": "404",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "conflict",
      "detail": "The request conflicts with the current resource state.",
      "status": "409",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "invalid_value",
      "detail": "The information you entered isn't valid. Please check it and try again.",
      "status": "422",
      "source": {
        "pointer": "/data/attributes/email"
      },
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "mfa_required",
      "detail": "MFA verification required",
      "status": "428",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "rate_limited",
      "detail": "Too many requests. Please try again later.",
      "status": "429",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "server_error",
      "detail": "Something went wrong.",
      "status": "500",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "not_implemented",
      "detail": "This operation is not available.",
      "status": "501",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "bad_gateway",
      "detail": "We couldn't complete that request because one of Natural's services returned an unexpected response. Please try again.",
      "status": "502",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "service_unavailable",
      "detail": "The service is temporarily unavailable.",
      "status": "503",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}