Sonar Trading

sonar · Finance

Finance No Auth Free & Open financial

Currency Authority: Exchange Rate of 1453 country currencies and crypto currencies

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Convert a currency amount to multiple other currencies

Convert a currency amount to multiple other currencies

https://api.apis.guru/v2/specs/sonar.trading/1.0/convert?to=2024-12-31&from=2024-01-01&amount=example&decimal_places=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/sonar.trading/1.0/convert?to=2024-12-31&from=2024-01-01&amount=example&decimal_places=example"

import requests
params = {
    "to": "2024-12-31",
    "from": "2024-01-01",
    "amount": "example",
    "decimal_places": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/sonar.trading/1.0/convert",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/sonar.trading/1.0/convert');
url.searchParams.set('to', '2024-12-31');
url.searchParams.set('from', '2024-01-01');
url.searchParams.set('amount', 'example');
url.searchParams.set('decimal_places', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/sonar.trading/1.0/convert")
	q := baseURL.Query()
	q.Set("to", "2024-12-31")
	q.Set("from", "2024-01-01")
	q.Set("amount", "example")
	q.Set("decimal_places", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/sonar.trading/1.0/convert")
uri.query = URI.encode_www_form({
  "to" => "2024-12-31",
  "from" => "2024-01-01",
  "amount" => "example",
  "decimal_places" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/sonar.trading/1.0/convert?" . http_build_query([
    "to" => "2024-12-31",
    "from" => "2024-01-01",
    "amount" => "example",
    "decimal_places" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Return a historic rate for a currencies

Return a historic rate for a currencies

https://api.apis.guru/v2/specs/sonar.trading/1.0/history?to=2024-12-31&date=2026-06-02&from=2024-01-01&amount=example&decimal_places=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/sonar.trading/1.0/history?to=2024-12-31&date=2026-06-02&from=2024-01-01&amount=example&decimal_places=example"

import requests
params = {
    "to": "2024-12-31",
    "date": "2026-06-02",
    "from": "2024-01-01",
    "amount": "example",
    "decimal_places": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/sonar.trading/1.0/history",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/sonar.trading/1.0/history');
url.searchParams.set('to', '2024-12-31');
url.searchParams.set('date', '2026-06-02');
url.searchParams.set('from', '2024-01-01');
url.searchParams.set('amount', 'example');
url.searchParams.set('decimal_places', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/sonar.trading/1.0/history")
	q := baseURL.Query()
	q.Set("to", "2024-12-31")
	q.Set("date", "2026-06-02")
	q.Set("from", "2024-01-01")
	q.Set("amount", "example")
	q.Set("decimal_places", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/sonar.trading/1.0/history")
uri.query = URI.encode_www_form({
  "to" => "2024-12-31",
  "date" => "2026-06-02",
  "from" => "2024-01-01",
  "amount" => "example",
  "decimal_places" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/sonar.trading/1.0/history?" . http_build_query([
    "to" => "2024-12-31",
    "date" => "2026-06-02",
    "from" => "2024-01-01",
    "amount" => "example",
    "decimal_places" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Return a list of all currencies of countries, available via service

Return a list of all currencies of countries, available via service

https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies?language=en

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies?language=en"

import requests
params = {
    "language": "en"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies');
url.searchParams.set('language', 'en');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies")
	q := baseURL.Query()
	q.Set("language", "en")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies")
uri.query = URI.encode_www_form({
  "language" => "en"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/sonar.trading/1.0/country/currencies?" . http_build_query([
    "language" => "en"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with Sonar Trading?

Sonar Trading is a Finance API. Developers commonly use finance APIs for:

processing payments and handling transactions
building subscription and billing systems
automating invoicing and financial reporting
fraud detection and risk scoring
connecting to banking and accounting software

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. Sonar Trading is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗