Payment Initiation API

openbanking · Government

Government No Auth Free & Open financial

Swagger for Payment Initiation API Specification

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Get Domestic Payment Consents

Get Domestic Payment Consents

https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}

Hover any highlighted part to learn what it does

Headers — extra info sent with the request

Authorization

example

curl -X GET "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}" \
  -H "Authorization: example"

import requests
headers = {
    "Authorization": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}",
    headers=headers,
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}';

const response = await fetch(url, {
  headers: {
    'Authorization': 'example'
  },
}); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}"
	req, _ := http.NewRequest("GET", targetURL, nil)
	req.Header.Set("Authorization", "example")

	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/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}")

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

req = Net::HTTP::Get.new(uri)
req["Authorization"] = "example"

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

<?php
$url = "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payment-consents/{ConsentId}";
$opts = ["http" => [
    "method" => "GET",
    "header" => implode("\r\n", [
        "Authorization: example"
    ]),
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get Domestic Payments

Get Domestic Payments

https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}

Hover any highlighted part to learn what it does

Headers — extra info sent with the request

Authorization

example

curl -X GET "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}" \
  -H "Authorization: example"

import requests
headers = {
    "Authorization": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}",
    headers=headers,
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}';

const response = await fetch(url, {
  headers: {
    'Authorization': 'example'
  },
}); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}"
	req, _ := http.NewRequest("GET", targetURL, nil)
	req.Header.Set("Authorization", "example")

	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/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}")

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

req = Net::HTTP::Get.new(uri)
req["Authorization"] = "example"

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

<?php
$url = "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-payments/{DomesticPaymentId}";
$opts = ["http" => [
    "method" => "GET",
    "header" => implode("\r\n", [
        "Authorization: example"
    ]),
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get Domestic Scheduled Payment Consents

Get Domestic Scheduled Payment Consents

https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}

Hover any highlighted part to learn what it does

Headers — extra info sent with the request

Authorization

example

curl -X GET "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}" \
  -H "Authorization: example"

import requests
headers = {
    "Authorization": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}",
    headers=headers,
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}';

const response = await fetch(url, {
  headers: {
    'Authorization': 'example'
  },
}); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}"
	req, _ := http.NewRequest("GET", targetURL, nil)
	req.Header.Set("Authorization", "example")

	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/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}")

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

req = Net::HTTP::Get.new(uri)
req["Authorization"] = "example"

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

<?php
$url = "https://api.apis.guru/v2/specs/openbanking.org.uk/payment-initiation-openapi/3.1.7/domestic-scheduled-payment-consents/{ConsentId}";
$opts = ["http" => [
    "method" => "GET",
    "header" => implode("\r\n", [
        "Authorization: example"
    ]),
]];
$ctx = stream_context_create($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 Payment Initiation API?

Payment Initiation API is a Government API. Developers commonly use government APIs for:

surfacing public datasets in citizen-facing apps
building transparency and civic engagement tools
accessing legislation, court records, and official data
powering research and journalism tools
creating compliance and regulatory monitoring dashboards

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

New to APIs? Read our beginner's guide

Open documentation ↗