curl --request POST \
  --url https://api.example.com/api/graph/v1/trade-contexts \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "event_ref": {
    "id": "<string>",
    "revision": 2
  },
  "chart_session_ref": {
    "id": "<string>",
    "revision": 2
  },
  "contract_version": "1"
}
'

import requests

url = "https://api.example.com/api/graph/v1/trade-contexts"

payload = {
    "event_ref": {
        "id": "<string>",
        "revision": 2
    },
    "chart_session_ref": {
        "id": "<string>",
        "revision": 2
    },
    "contract_version": "1"
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Idempotency-Key': '<idempotency-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    event_ref: {id: '<string>', revision: 2},
    chart_session_ref: {id: '<string>', revision: 2},
    contract_version: '1'
  })
};

fetch('https://api.example.com/api/graph/v1/trade-contexts', 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.example.com/api/graph/v1/trade-contexts",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'event_ref' => [
        'id' => '<string>',
        'revision' => 2
    ],
    'chart_session_ref' => [
        'id' => '<string>',
        'revision' => 2
    ],
    'contract_version' => '1'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-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"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/api/graph/v1/trade-contexts"

	payload := strings.NewReader("{\n  \"event_ref\": {\n    \"id\": \"<string>\",\n    \"revision\": 2\n  },\n  \"chart_session_ref\": {\n    \"id\": \"<string>\",\n    \"revision\": 2\n  },\n  \"contract_version\": \"1\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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))

}

HttpResponse<String> response = Unirest.post("https://api.example.com/api/graph/v1/trade-contexts")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"event_ref\": {\n    \"id\": \"<string>\",\n    \"revision\": 2\n  },\n  \"chart_session_ref\": {\n    \"id\": \"<string>\",\n    \"revision\": 2\n  },\n  \"contract_version\": \"1\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/api/graph/v1/trade-contexts")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"event_ref\": {\n    \"id\": \"<string>\",\n    \"revision\": 2\n  },\n  \"chart_session_ref\": {\n    \"id\": \"<string>\",\n    \"revision\": 2\n  },\n  \"contract_version\": \"1\"\n}"

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

{
  "contract_version": "trade-context-v1",
  "context_id": "<string>",
  "revision": 2,
  "execution_effect": "none",
  "event_ref": {
    "id": "<string>",
    "revision": 2
  },
  "setup": {
    "pattern_id": "<string>",
    "pattern_version": 2,
    "family": "<string>",
    "direction": 123,
    "grain": "<string>"
  },
  "chart": {
    "session_ref": {
      "id": "<string>",
      "revision": 2,
      "revision_hash": "<string>"
    },
    "symbol": "<string>",
    "interval": "1m",
    "visible_range": {
      "from_time": 2,
      "to_time": 2
    },
    "chart_type": "area",
    "focused_event_ref": {
      "id": "<string>",
      "revision": 2
    },
    "timezone": "<string>",
    "selected_range": {
      "from_time": 2,
      "to_time": 2
    }
  },
  "captured_at": "2023-11-07T05:31:56Z",
  "provenance": {
    "event_registry": {},
    "event_producer_time": "2023-11-07T05:31:56Z",
    "lifecycle_id": "<string>",
    "source_contract": "event-linked-decision-lens-v1"
  },
  "content_hash": "<string>",
  "revision_hash": "<string>",
  "replayed": true,
  "lens_ref": {
    "id": "<string>",
    "revision": 2
  },
  "previous_hash": "<string>"
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}