curl --request POST \
  --url https://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "capability": "linked_bank",
  "country": "US",
  "currency": "USD",
  "rail": "ach"
}
'

import requests

url = "https://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations"

payload = {
    "capability": "linked_bank",
    "country": "US",
    "currency": "USD",
    "rail": "ach"
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Basic <encoded-value>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({capability: 'linked_bank', country: 'US', currency: 'USD', rail: 'ach'})
};

fetch('https://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations', 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://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations",
  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([
    'capability' => 'linked_bank',
    'country' => 'US',
    'currency' => 'USD',
    'rail' => 'ach'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($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://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations"

	payload := strings.NewReader("{\n  \"capability\": \"linked_bank\",\n  \"country\": \"US\",\n  \"currency\": \"USD\",\n  \"rail\": \"ach\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Basic <encoded-value>")
	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://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"capability\": \"linked_bank\",\n  \"country\": \"US\",\n  \"currency\": \"USD\",\n  \"rail\": \"ach\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://prod-api.stableyard.fi/v2/accounts/{accountId}/capability-activations")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"capability\": \"linked_bank\",\n  \"country\": \"US\",\n  \"currency\": \"USD\",\n  \"rail\": \"ach\"\n}"

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

{
  "accountId": "acct_123",
  "capability": {
    "name": "linked_bank",
    "status": "action_required",
    "ready": false,
    "nextAction": {
      "type": "complete_compliance",
      "url": "https://identity.stableyard.fi/identity/c/ca_example",
      "expiresAt": "2026-09-10T12:15:00.000Z"
    },
    "updatedAt": "2026-09-10T12:00:00.000Z"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}

{
  "error": {
    "code": "bad_request",
    "message": "The request is invalid",
    "details": "example"
  }
}