Create subscription

Subscribe a destination to a topic with optional filters and transforms.

POST /topics/{id}/subscriptions
Subscribe a destination to a topic with optional filters and transforms.

Authentication

API Key (header: X-API-Key) API Key (cookie: better-auth.session_token)

Path Parameters

id string required path
Resource ID (32-char hex)
Example: "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6"

Request Body required

Request body

application/json
destination_id string REQUIRED
Destination ID to subscribe
filter_rules object[]
Optional filter rules for this subscription
Array of:
transform_expression string
Optional JSONata transform expression

Responses

201 Subscription created
application/json
subscription unknown REQUIRED
400 Bad request
401 Unauthorized
404 Not found
409 Already subscribed 
curl -X POST 'https://hookstream.io/v1/topics/a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6/subscriptions' \
  -H 'Authorization: Bearer YOUR_API_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
  "destination_id": "string",
  "filter_rules": [
    {}
  ],
  "transform_expression": "string"
}'
const response = await fetch('https://hookstream.io/v1/topics/a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6/subscriptions', {
  method: 'POST',
  headers: {
      "Authorization": "Bearer YOUR_API_TOKEN",
      "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "destination_id": "string",
    "filter_rules": [
      {}
    ],
    "transform_expression": "string"
  })
});

const data = await response.json();
console.log(data);
import requests

headers = {
    'Authorization': 'Bearer YOUR_API_TOKEN'
}

response = requests.post('https://hookstream.io/v1/topics/a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6/subscriptions', headers=headers, json={
  "destination_id": "string",
  "filter_rules": [
    {}
  ],
  "transform_expression": "string"
})
print(response.json())
package main

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

func main() {
	body := strings.NewReader(`{
  "destination_id": "string",
  "filter_rules": [
    {}
  ],
  "transform_expression": "string"
}`)
	req, _ := http.NewRequest("POST", "https://hookstream.io/v1/topics/a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6/subscriptions", body)
	req.Header.Set("Authorization", "Bearer YOUR_API_TOKEN")
	req.Header.Set("Content-Type", "application/json")

	resp, _ := http.DefaultClient.Do(req)
	defer resp.Body.Close()
	result, _ := io.ReadAll(resp.Body)
	fmt.Println(string(result))
}
201 Response 
{
  "subscription": {
    "id": "<string>",
    "org_id": "<string>",
    "env_id": "<string>",
    "topic_id": "<string>",
    "destination_id": "<string>",
    "filter_rules": "<string>",
    "transform_expression": "<string>",
    "enabled": 123,
    "created_at": "<string>",
    "destination_name": "<string>"
  }
}
POST /topics/{id}/subscriptions
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