curl --request POST \
  --url https://matcher.sandbox.lerian.net/v1/contexts/{contextId}/sources \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Primary Bank Account",
  "side": "LEFT",
  "type": "BANK",
  "config": {
    "camt053": {},
    "dialect": {},
    "duplicate_key": [],
    "fail_on_error_rate_percent": 50
  }
}
'

package main

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

func main() {

	url := "https://matcher.sandbox.lerian.net/v1/contexts/{contextId}/sources"

	payload := strings.NewReader("{\n  \"name\": \"Primary Bank Account\",\n  \"side\": \"LEFT\",\n  \"type\": \"BANK\",\n  \"config\": {\n    \"camt053\": {},\n    \"dialect\": {},\n    \"duplicate_key\": [],\n    \"fail_on_error_rate_percent\": 50\n  }\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))

}

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Primary Bank Account',
    side: 'LEFT',
    type: 'BANK',
    config: {camt053: {}, dialect: {}, duplicate_key: [], fail_on_error_rate_percent: 50}
  })
};

fetch('https://matcher.sandbox.lerian.net/v1/contexts/{contextId}/sources', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://matcher.sandbox.lerian.net/v1/contexts/{contextId}/sources"

payload = {
    "name": "Primary Bank Account",
    "side": "LEFT",
    "type": "BANK",
    "config": {
        "camt053": {},
        "dialect": {},
        "duplicate_key": [],
        "fail_on_error_rate_percent": 50
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)