curl --request POST \
  --url https://api.superx.so/v1/signals/agents/{id}/signals \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "type": "follower_watch",
  "handle": "naval"
}
'

import requests

url = "https://api.superx.so/v1/signals/agents/{id}/signals"

payload = {
    "type": "follower_watch",
    "handle": "naval"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({type: 'follower_watch', handle: 'naval'})
};

fetch('https://api.superx.so/v1/signals/agents/{id}/signals', 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.superx.so/v1/signals/agents/{id}/signals",
  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([
    'type' => 'follower_watch',
    'handle' => 'naval'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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.superx.so/v1/signals/agents/{id}/signals"

	payload := strings.NewReader("{\n  \"type\": \"follower_watch\",\n  \"handle\": \"naval\"\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))

}

HttpResponse<String> response = Unirest.post("https://api.superx.so/v1/signals/agents/{id}/signals")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"type\": \"follower_watch\",\n  \"handle\": \"naval\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.superx.so/v1/signals/agents/{id}/signals")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"type\": \"follower_watch\",\n  \"handle\": \"naval\"\n}"

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

{
  "data": {
    "id": 118,
    "type": "follower_watch",
    "handle": "naval",
    "name": "Naval",
    "avatar": "https://pbs.twimg.com/profile_images/...",
    "query": null,
    "list_name": null,
    "status": "active",
    "status_detail": null,
    "last_run_at": null,
    "created_at": "2026-09-07T10:00:00.000Z"
  }
}

{
  "error": {
    "code": "invalid_parameter",
    "message": "since must be a UTC ISO-8601 timestamp"
  }
}

{
  "error": {
    "code": "invalid_api_key",
    "message": "Unknown or revoked API key"
  }
}

{
  "error": {
    "code": "cap_reached",
    "message": "This agent has reached its limit of 3 signals on the pro plan. Remove a signal in SuperX or upgrade your plan."
  }
}

{
  "error": {
    "code": "user_not_found",
    "message": "No X account matches that handle."
  }
}

{
  "error": {
    "code": "duplicate_signal",
    "message": "This agent already watches that target. List the agent's signals at /v1/signals/agents."
  }
}

{
  "error": {
    "code": "rate_limited",
    "message": "Rate limit exceeded for the Pro plan (30 requests/min). Upgrade for higher limits.",
    "retry_after": 42
  }
}

{
  "error": {
    "code": "upstream_error",
    "message": "Failed to fetch scheduled posts. Try again shortly."
  }
}

{
  "error": {
    "code": "upstream_unavailable",
    "message": "The scheduling service is temporarily unavailable. Retry with the same Idempotency-Key."
  }
}