Create exchange rate (NOT IMPLEMENTED)
curl --request POST \
--url https://api.arcuserp.com/v1/exchange-rates \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"rate": 123,
"from_currency": "USD",
"from_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"to_currency": "GBP",
"to_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"as_of_date": "2023-12-25",
"effective_date": "2023-12-25",
"source": "<string>",
"external_source": "<string>",
"external_id": "<string>",
"metadata": {}
}
'import requests
url = "https://api.arcuserp.com/v1/exchange-rates"
payload = {
"rate": 123,
"from_currency": "USD",
"from_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"to_currency": "GBP",
"to_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"as_of_date": "2023-12-25",
"effective_date": "2023-12-25",
"source": "<string>",
"external_source": "<string>",
"external_id": "<string>",
"metadata": {}
}
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({
rate: 123,
from_currency: 'USD',
from_currency_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
to_currency: 'GBP',
to_currency_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
as_of_date: '2023-12-25',
effective_date: '2023-12-25',
source: '<string>',
external_source: '<string>',
external_id: '<string>',
metadata: {}
})
};
fetch('https://api.arcuserp.com/v1/exchange-rates', 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.arcuserp.com/v1/exchange-rates",
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([
'rate' => 123,
'from_currency' => 'USD',
'from_currency_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'to_currency' => 'GBP',
'to_currency_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'as_of_date' => '2023-12-25',
'effective_date' => '2023-12-25',
'source' => '<string>',
'external_source' => '<string>',
'external_id' => '<string>',
'metadata' => [
]
]),
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.arcuserp.com/v1/exchange-rates"
payload := strings.NewReader("{\n \"rate\": 123,\n \"from_currency\": \"USD\",\n \"from_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"to_currency\": \"GBP\",\n \"to_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"as_of_date\": \"2023-12-25\",\n \"effective_date\": \"2023-12-25\",\n \"source\": \"<string>\",\n \"external_source\": \"<string>\",\n \"external_id\": \"<string>\",\n \"metadata\": {}\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.arcuserp.com/v1/exchange-rates")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"rate\": 123,\n \"from_currency\": \"USD\",\n \"from_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"to_currency\": \"GBP\",\n \"to_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"as_of_date\": \"2023-12-25\",\n \"effective_date\": \"2023-12-25\",\n \"source\": \"<string>\",\n \"external_source\": \"<string>\",\n \"external_id\": \"<string>\",\n \"metadata\": {}\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.arcuserp.com/v1/exchange-rates")
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 \"rate\": 123,\n \"from_currency\": \"USD\",\n \"from_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"to_currency\": \"GBP\",\n \"to_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"as_of_date\": \"2023-12-25\",\n \"effective_date\": \"2023-12-25\",\n \"source\": \"<string>\",\n \"external_source\": \"<string>\",\n \"external_id\": \"<string>\",\n \"metadata\": {}\n}"
response = http.request(request)
puts response.read_body{}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}Masters
Create exchange rate (NOT IMPLEMENTED)
NOTICE: Multi-currency support is NOT implemented in Arcus.
This endpoint accepts writes for forward-compatibility but exchange rate data has no business
effect on any transaction. Returns HTTP 501 unless entities.settings.multi_currency_enabled
is true (which no entity has set, as of 2026-05-22).
Append-only per-day FX snapshots.
Currency fields accept either a UUID (from the currencies resource) or an ISO-4217 code
(e.g. “USD”, “EUR”, “GBP”). Codes are resolved to UUIDs at write time; UUIDs are canonical
in the database (Rule 23 SSOT). If both from_currency and from_currency_id are provided,
from_currency_id takes precedence.
effective_date is accepted as an alias for as_of_date.
POST
/
exchange-rates
Create exchange rate (NOT IMPLEMENTED)
curl --request POST \
--url https://api.arcuserp.com/v1/exchange-rates \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"rate": 123,
"from_currency": "USD",
"from_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"to_currency": "GBP",
"to_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"as_of_date": "2023-12-25",
"effective_date": "2023-12-25",
"source": "<string>",
"external_source": "<string>",
"external_id": "<string>",
"metadata": {}
}
'import requests
url = "https://api.arcuserp.com/v1/exchange-rates"
payload = {
"rate": 123,
"from_currency": "USD",
"from_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"to_currency": "GBP",
"to_currency_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"as_of_date": "2023-12-25",
"effective_date": "2023-12-25",
"source": "<string>",
"external_source": "<string>",
"external_id": "<string>",
"metadata": {}
}
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({
rate: 123,
from_currency: 'USD',
from_currency_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
to_currency: 'GBP',
to_currency_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
as_of_date: '2023-12-25',
effective_date: '2023-12-25',
source: '<string>',
external_source: '<string>',
external_id: '<string>',
metadata: {}
})
};
fetch('https://api.arcuserp.com/v1/exchange-rates', 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.arcuserp.com/v1/exchange-rates",
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([
'rate' => 123,
'from_currency' => 'USD',
'from_currency_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'to_currency' => 'GBP',
'to_currency_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'as_of_date' => '2023-12-25',
'effective_date' => '2023-12-25',
'source' => '<string>',
'external_source' => '<string>',
'external_id' => '<string>',
'metadata' => [
]
]),
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.arcuserp.com/v1/exchange-rates"
payload := strings.NewReader("{\n \"rate\": 123,\n \"from_currency\": \"USD\",\n \"from_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"to_currency\": \"GBP\",\n \"to_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"as_of_date\": \"2023-12-25\",\n \"effective_date\": \"2023-12-25\",\n \"source\": \"<string>\",\n \"external_source\": \"<string>\",\n \"external_id\": \"<string>\",\n \"metadata\": {}\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.arcuserp.com/v1/exchange-rates")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"rate\": 123,\n \"from_currency\": \"USD\",\n \"from_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"to_currency\": \"GBP\",\n \"to_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"as_of_date\": \"2023-12-25\",\n \"effective_date\": \"2023-12-25\",\n \"source\": \"<string>\",\n \"external_source\": \"<string>\",\n \"external_id\": \"<string>\",\n \"metadata\": {}\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.arcuserp.com/v1/exchange-rates")
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 \"rate\": 123,\n \"from_currency\": \"USD\",\n \"from_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"to_currency\": \"GBP\",\n \"to_currency_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"as_of_date\": \"2023-12-25\",\n \"effective_date\": \"2023-12-25\",\n \"source\": \"<string>\",\n \"external_source\": \"<string>\",\n \"external_id\": \"<string>\",\n \"metadata\": {}\n}"
response = http.request(request)
puts response.read_body{}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}{
"error": "not_found",
"code": "not_found",
"type": "not_found",
"hint": "The requested order does not exist or does not belong to this entity.",
"param": "expand[0]",
"required": "accounts:read",
"request_id": "req_abc123"
}Authorizations
API key issued per entity via Settings > Developers > API Keys.
Each key carries scopes (e.g. orders:read, products:write).
Bearer token format: Authorization: Bearer ark_live_ent_Test keys use ark_test_ent_. Both are issued per entity
via Settings > Developers > API Keys.
Headers
Body
application/json
Exchange rate (units of to_currency per 1 unit of from_currency)
ISO-4217 currency code OR UUID of the source currency. Alias: resolved to from_currency_id.
Pattern:
^[A-Z]{3}$Example:
"USD"
UUID of the source currency (canonical form). Overrides from_currency if both provided.
ISO-4217 currency code OR UUID of the target currency. Alias: resolved to to_currency_id.
Pattern:
^[A-Z]{3}$Example:
"GBP"
UUID of the target currency (canonical form). Overrides to_currency if both provided.
Date this rate applies to. Alias: effective_date.
Alias for as_of_date. Accepted if as_of_date is not provided.
Rate source identifier (e.g. ecb
Response
Created exchange rate
The response is of type object.
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