curl --request GET \
--url https://api-sandbox.endl.io/api/v0/accounts/cus_9FpQ2LmZ8sW4TxKn1BvD/available-for-opening \
--header 'API-KEY: <api-key>' \
--header 'Api-Version: 2026-09.1'
{
"data": [
{ "currency": "USD", "available": true },
{ "currency": "EUR", "available": false, "reason": "ALREADY_OPEN" },
{ "currency": "GBP", "available": false, "reason": "PENDING_REVIEW" },
{ "currency": "AED", "available": false, "reason": "ELIGIBILITY_CHECK_REQUIRED" }
]
}
{
"code": 400,
"message": "User id is required",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRACC_1000",
"message": "User id is required",
"field": "userId"
}
]
}
{
"code": 401,
"message": "Partner API key required",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1004",
"message": "Partner API key required",
"field": null
}
]
}
{
"code": 403,
"message": "Insufficient permissions",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1005",
"message": "Insufficient permissions",
"field": null
}
]
}
{
"code": 404,
"message": "User with ID 'cus_…' not found",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRREF_1001",
"message": "User with ID 'cus_…' not found",
"field": "userId"
}
]
}
{
"code": 405,
"message": "HTTP … is not supported for this endpoint",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1001",
"message": "HTTP … is not supported for this endpoint",
"field": null
}
]
}
{
"code": 429,
"message": "Rate limit exceeded, please retry later",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1006",
"message": "Rate limit exceeded, please retry later",
"field": null
}
]
}
{
"code": 500,
"message": "An error occurred while processing your request",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1000",
"message": "An error occurred while processing your request",
"field": null
}
]
}
List currencies available for opening
Returns which currencies this customer can open an account in right now, and why not when they cannot.
Call this before Open Account rather than hardcoding a currency list — availability is decided by the provider at request time and depends on the customer’s own onboarding state.
Requires the accounts permission.
GET
/
api
/
v0
/
accounts
/
{userId}
/
available-for-opening
curl --request GET \
--url https://api-sandbox.endl.io/api/v0/accounts/cus_9FpQ2LmZ8sW4TxKn1BvD/available-for-opening \
--header 'API-KEY: <api-key>' \
--header 'Api-Version: 2026-09.1'
{
"data": [
{ "currency": "USD", "available": true },
{ "currency": "EUR", "available": false, "reason": "ALREADY_OPEN" },
{ "currency": "GBP", "available": false, "reason": "PENDING_REVIEW" },
{ "currency": "AED", "available": false, "reason": "ELIGIBILITY_CHECK_REQUIRED" }
]
}
{
"code": 400,
"message": "User id is required",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRACC_1000",
"message": "User id is required",
"field": "userId"
}
]
}
{
"code": 401,
"message": "Partner API key required",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1004",
"message": "Partner API key required",
"field": null
}
]
}
{
"code": 403,
"message": "Insufficient permissions",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1005",
"message": "Insufficient permissions",
"field": null
}
]
}
{
"code": 404,
"message": "User with ID 'cus_…' not found",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRREF_1001",
"message": "User with ID 'cus_…' not found",
"field": "userId"
}
]
}
{
"code": 405,
"message": "HTTP … is not supported for this endpoint",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1001",
"message": "HTTP … is not supported for this endpoint",
"field": null
}
]
}
{
"code": 429,
"message": "Rate limit exceeded, please retry later",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1006",
"message": "Rate limit exceeded, please retry later",
"field": null
}
]
}
{
"code": 500,
"message": "An error occurred while processing your request",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1000",
"message": "An error occurred while processing your request",
"field": null
}
]
}
Errors
| Status | Code | When |
|---|---|---|
400 | ERRACC_1000 | The {userId} path segment is blank or whitespace. field: userId |
400 | ERRCORE_1001 | The version header is missing, malformed, or names a version the server does not support. field: Api-Version |
400 | ERRCORE_1001 | The raw path contains a doubled slash, an encoded slash, a backslash or a control character. |
401 | ERRCORE_1004 | The Api-Key header is missing, does not match an active credential, or its partner is inactive. |
403 | ERRCORE_1005 | The key is valid but lacks the accounts permission. |
403 | ERRCORE_1005 | The calling IP is outside the allow-list configured on the key. |
404 | ERRREF_1001 | {userId} resolves to nothing, belongs to another partner, or the customer is soft-deleted. field: userId |
404 | ERRCORE_1002 | Relayed from the core service when the resolved user is missing there — a data race, rarely seen. |
405 | ERRCORE_1001 | Wrong verb on a real path, e.g. PUT on Get Account. |
429 | ERRCORE_1006 | The per-API-key limit was exhausted. Carries X-RateLimit-Limit and X-RateLimit-Remaining. |
500 | ERRCORE_1000 | An unexpected server error. Quote the X-Request-ID when reporting it. |
curl --request GET \
--url https://api-sandbox.endl.io/api/v0/accounts/cus_9FpQ2LmZ8sW4TxKn1BvD/available-for-opening \
--header 'API-KEY: <api-key>' \
--header 'Api-Version: 2026-09.1'
{
"data": [
{ "currency": "USD", "available": true },
{ "currency": "EUR", "available": false, "reason": "ALREADY_OPEN" },
{ "currency": "GBP", "available": false, "reason": "PENDING_REVIEW" },
{ "currency": "AED", "available": false, "reason": "ELIGIBILITY_CHECK_REQUIRED" }
]
}
{
"code": 400,
"message": "User id is required",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRACC_1000",
"message": "User id is required",
"field": "userId"
}
]
}
{
"code": 401,
"message": "Partner API key required",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1004",
"message": "Partner API key required",
"field": null
}
]
}
{
"code": 403,
"message": "Insufficient permissions",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1005",
"message": "Insufficient permissions",
"field": null
}
]
}
{
"code": 404,
"message": "User with ID 'cus_…' not found",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRREF_1001",
"message": "User with ID 'cus_…' not found",
"field": "userId"
}
]
}
{
"code": 405,
"message": "HTTP … is not supported for this endpoint",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1001",
"message": "HTTP … is not supported for this endpoint",
"field": null
}
]
}
{
"code": 429,
"message": "Rate limit exceeded, please retry later",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1006",
"message": "Rate limit exceeded, please retry later",
"field": null
}
]
}
{
"code": 500,
"message": "An error occurred while processing your request",
"status": "ERROR",
"data": null,
"errors": [
{
"code": "ERRCORE_1000",
"message": "An error occurred while processing your request",
"field": null
}
]
}
Authorizations
Your partner API key.
Headers
The API version this request targets. Required on every /api/v0/* call. Format YYYY-MM.<release>; 2026-09.1 is the latest. The version that served the request is echoed back on the response. Missing, malformed or unsupported values are rejected with 400.
Pattern:
^\d{4}-\d{2}\.\d+$Path Parameters
The customer the account belongs to. Must be a cus_… reference id, and must belong to your partner account. Blank → 400 ERRACC_1000; malformed, unknown, soft-deleted or another partner's → 404 ERRREF_1001.
Example:
"cus_9HqA2mT7xK4vRb1NdLpZ"
Response
Returns which currencies this customer can open an account in right now, and why not when they cannot.
One row per supported currency.
Show child attributes
Show child attributes