curl --request POST \
  --url https://streaming-hub.sandbox.lerian.net/v1/subscriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Idempotency: <x-idempotency>' \
  --data '
{
  "name": "orders-webhook",
  "endpoint": "https://hooks.example.com/lerian",
  "event_types": [
    "transaction.posted"
  ],
  "origin": "ledger",
  "timeout_ms": 20000,
  "schema_major": 1,
  "event_majors": {},
  "plan_tier": "standard"
}
'

package main

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

func main() {

	url := "https://streaming-hub.sandbox.lerian.net/v1/subscriptions"

	payload := strings.NewReader("{\n  \"name\": \"orders-webhook\",\n  \"endpoint\": \"https://hooks.example.com/lerian\",\n  \"event_types\": [\n    \"transaction.posted\"\n  ],\n  \"origin\": \"ledger\",\n  \"timeout_ms\": 20000,\n  \"schema_major\": 1,\n  \"event_majors\": {},\n  \"plan_tier\": \"standard\"\n}")

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

	req.Header.Add("X-Idempotency", "<x-idempotency>")
	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: {
    'X-Idempotency': '<x-idempotency>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: 'orders-webhook',
    endpoint: 'https://hooks.example.com/lerian',
    event_types: ['transaction.posted'],
    origin: 'ledger',
    timeout_ms: 20000,
    schema_major: 1,
    event_majors: {},
    plan_tier: 'standard'
  })
};

fetch('https://streaming-hub.sandbox.lerian.net/v1/subscriptions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://streaming-hub.sandbox.lerian.net/v1/subscriptions"

payload = {
    "name": "orders-webhook",
    "endpoint": "https://hooks.example.com/lerian",
    "event_types": ["transaction.posted"],
    "origin": "ledger",
    "timeout_ms": 20000,
    "schema_major": 1,
    "event_majors": {},
    "plan_tier": "standard"
}
headers = {
    "X-Idempotency": "<x-idempotency>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "subscription": {
    "id": "0192f1a0-0000-7000-8000-00000000c001",
    "name": "orders-webhook",
    "sink_kind": "webhook",
    "endpoint": "https://hooks.example.com/ingest",
    "signature_version": 1,
    "plan_tier": "standard",
    "enabled": true,
    "verification_state": "pending_verification",
    "created_at": "2026-01-15T12:00:00Z",
    "updated_at": "2026-01-15T12:00:00Z",
    "event_types": [
      "account.created",
      "account.updated"
    ],
    "schema_major": 1,
    "event_majors": {},
    "origin": "ledger",
    "timeout_ms": 20000
  },
  "signingSecret": "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8="
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ],
  "existing_id": "0192f1a0-0000-7000-8000-0000000000ff"
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}

{
  "title": "Not Found",
  "status": 404,
  "type": "https://errors.lerian.studio/v1/not_found",
  "detail": "subscription not found",
  "code": "not_found",
  "instance": "4bf92f3577b34da6a3ce929d0e0e4736",
  "errors": [
    {
      "location": "event_types/2",
      "message": "\"transaction.creatd\" has no catalog entry at schema major 1"
    }
  ]
}