curl
curl https://api.arcus.xyz/v1/bbo/BTC-USDimport requests
r = requests.get("https://api.arcus.xyz/v1/bbo/BTC-USD")
print(r.json())
const res = await fetch("https://api.arcus.xyz/v1/bbo/BTC-USD");
console.log(await res.json());
const options = {method: 'GET'};
fetch('https://api.arcus.xyz/v1/bbo/{market}', 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.arcus.xyz/v1/bbo/{market}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.arcus.xyz/v1/bbo/{market}"
req, _ := http.NewRequest("GET", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.arcus.xyz/v1/bbo/{market}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.arcus.xyz/v1/bbo/{market}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
response = http.request(request)
puts response.read_body{
"bestBid": {
"price": "<string>",
"size": "<string>"
},
"bestAsk": {
"price": "<string>",
"size": "<string>"
},
"lastSequenceId": 123,
"globalSequenceId": 123,
"timestamp": 123
}{
"error": "Invalid request body",
"code": "GEO_RESTRICTED",
"errorSource": "Order",
"errorType": "Tick",
"rejectionReason": "POST_ONLY_WOULD_CROSS"
}{
"error": "rate limited",
"reason": "account_empty",
"retryAfterMs": 850,
"clientId": "my-order-42"
}Public
Get Best Bid Offer (BBO)
Returns the best bid and best ask for a market, derived from the orderbook snapshot. Returns null for bestBid/bestAsk when no data is available.
GET
/
v1
/
bbo
/
{market}
curl
curl https://api.arcus.xyz/v1/bbo/BTC-USDimport requests
r = requests.get("https://api.arcus.xyz/v1/bbo/BTC-USD")
print(r.json())
const res = await fetch("https://api.arcus.xyz/v1/bbo/BTC-USD");
console.log(await res.json());
const options = {method: 'GET'};
fetch('https://api.arcus.xyz/v1/bbo/{market}', 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.arcus.xyz/v1/bbo/{market}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.arcus.xyz/v1/bbo/{market}"
req, _ := http.NewRequest("GET", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.arcus.xyz/v1/bbo/{market}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.arcus.xyz/v1/bbo/{market}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
response = http.request(request)
puts response.read_body{
"bestBid": {
"price": "<string>",
"size": "<string>"
},
"bestAsk": {
"price": "<string>",
"size": "<string>"
},
"lastSequenceId": 123,
"globalSequenceId": 123,
"timestamp": 123
}{
"error": "Invalid request body",
"code": "GEO_RESTRICTED",
"errorSource": "Order",
"errorType": "Tick",
"rejectionReason": "POST_ONLY_WOULD_CROSS"
}{
"error": "rate limited",
"reason": "account_empty",
"retryAfterMs": 850,
"clientId": "my-order-42"
}The response body shown here is a static example, not live data. After you click Send, your live result appears in a separate panel headed 200 OK. The panel under the status-code tabs is a fixed sample from the spec — its field values (fees, prices, sizes, IDs, timestamps) are placeholders. Use Send, or call the endpoint, for current values.
Path Parameters
Market identifier.
Example:
"BTC-USD"
Response
Best bid/offer.
Best bid/offer. Sent as snapshot and updates on the bbo channel, and returned by GET /bbo/{market}.
Best bid level, or null if no bids.
Show child attributes
Show child attributes
Best ask level, or null if no asks.
Show child attributes
Show child attributes
Market-specific sequence ID for syncing with WebSocket orderbook stream.
Global sequence ID across all markets.
Snapshot timestamp (epoch microseconds).
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