Account

Get Balance

Get balance, unrealized PnL, and total value for an allowed wallet.

With no wallet_id, this preserves the documented API-wallet default for both API-key and Bearer authentication. An explicit wallet id uses the same ownership-checked wallet resolution as the sibling account read endpoints; missing and foreign ids are indistinguishable 404 responses.

Per-user 5-second cache (override via BALANCE_CACHE_TTL_S env; set to 0 to disable). Trade writes bust the cache via app.api_v1._user_cache.bust_balance_cache.

GET

account

balance

Get Balance

curl --request GET \
  --url https://api.polysimulator.com/v1/account/balance \
  --header 'X-API-Key: <api-key>'

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.polysimulator.com/v1/account/balance', 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.polysimulator.com/v1/account/balance",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-API-Key: <api-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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.polysimulator.com/v1/account/balance"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-API-Key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.polysimulator.com/v1/account/balance")

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

request = Net::HTTP::Get.new(url)
request["X-API-Key"] = '<api-key>'

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

{
  "balance": "<string>",
  "currency": "<string>",
  "unrealized_pnl": "<string>",
  "total_value": "<string>",
  "starting_balance": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

Authorizations

X-API-Key

string

header

required

Issue from /v1/keys (or admin-issued for enterprise tier).

Headers

authorization

string | null

X-API-Key

string | null

POLY_API_KEY

string | null

Poly-API-Key

string | null

Query Parameters

wallet_id

integer | null

An integer wallet id you own. Omit to read the API wallet. A missing or foreign wallet returns 404 WALLET_NOT_FOUND.

Response

Successful Response

balance

string

required

Spendable cash in the wallet (the API wallet unless wallet_id is given). Cash reserved by resting BUY orders is not included.

currency

string

required

Always USD.

unrealized_pnl

string

required

Total P&L of the wallet against its starting balance: total_value - starting_balance. Despite the name, this is not the P&L of open positions alone: realized gains and losses and fees already paid are in it too. For open-position P&L, add up unrealized_pnl from GET /v1/account/positions?status=OPEN (null for a position with no live price).

total_value

string

required

Wallet equity: balance + cash reserved by resting BUY orders + mark-to-market value of open positions and of shares reserved by resting SELL orders. Placing or cancelling a resting order does not change it.

starting_balance

string

required

The wallet's P&L baseline. For the API wallet this is the tier-dependent paper seed (Free $100, Pro $10,000, Pro+ $25,000).

Get Balance

curl --request GET \
  --url https://api.polysimulator.com/v1/account/balance \
  --header 'X-API-Key: <api-key>'

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.polysimulator.com/v1/account/balance', 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.polysimulator.com/v1/account/balance",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-API-Key: <api-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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.polysimulator.com/v1/account/balance"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-API-Key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.polysimulator.com/v1/account/balance")

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

request = Net::HTTP::Get.new(url)
request["X-API-Key"] = '<api-key>'

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

{
  "balance": "<string>",
  "currency": "<string>",
  "unrealized_pnl": "<string>",
  "total_value": "<string>",
  "starting_balance": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "details": {},
  "request_id": "<string>"
}

Overview

Endpoints

Get Balance

Authorizations

Headers

Query Parameters

Response