> ## Documentation Index
> Fetch the complete documentation index at: https://www.ayrshare.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Interests

> Get Facebook Ad Interests

export const PlansAvailable = ({plans = [], maxPackRequired}) => {
  let displayPlans = plans;
  if (plans && plans.length === 1) {
    const lowerCasePlan = plans[0].toLowerCase();
    if (lowerCasePlan === "business") {
      displayPlans = ["Launch", "Business", "Enterprise"];
    } else if (lowerCasePlan === "premium") {
      displayPlans = ["Premium", "Launch", "Business", "Enterprise"];
    }
  }
  return <Note>
Available on {displayPlans.length === 1 ? "the " : ""}
{displayPlans.join(", ").replace(/\b\w/g, l => l.toUpperCase())}{" "}
{displayPlans.length > 1 ? "plans" : "plan"}.

{maxPackRequired && <span onClick={() => window.open('https://www.ayrshare.com/docs/additional/maxpack', '_self')} className="flex items-center mt-2 cursor-pointer">
 <span className="px-1.5 py-0.5 rounded text-sm" style={{
    backgroundColor: '#C264B6',
    color: 'white',
    fontSize: '12px'
  }}>
   Max Pack required
 </span>
</span>}
</Note>;
};

export const HeaderAPI = ({noProfileKey, profileKeyRequired}) => <>
    <ParamField header="Authorization" type="string" required>
      <a href="/apis/overview#authorization">API Key</a> of the Primary Profile.
      <br />
      <br />
      Format: <code>Authorization: Bearer API_KEY</code>
    </ParamField>
    {!noProfileKey && (profileKeyRequired ? <ParamField header="Profile-Key" type="string" required>
          <a href="/apis/overview#profile-key-format">Profile Key</a> of a User Profile.
          <br />
          <br />
          Format: <code>Profile-Key: PROFILE_KEY</code>
        </ParamField> : <ParamField header="Profile-Key" type="string">
          <a href="/apis/overview#profile-key-format">Profile Key</a> of a User Profile.
          <br />
          <br />
          Format: <code>Profile-Key: PROFILE_KEY</code>
        </ParamField>)}
  </>;

<PlansAvailable plans={["premium"]} maxPackRequired={false} />

Search for available Facebook ad targeting interests by keyword.
Use this endpoint to look up interest IDs for the [Boost Post](/apis/ads/facebook/boost-post) endpoint.

This endpoint helps you discover interest-based targeting options for your Facebook ads, along with audience size estimates.

<ul className="custom-bullets">
  <li>Interest IDs can be used in the `interests` array when boosting posts.</li>
  <li>Results are cached for 10 minutes.</li>
  <li>Use specific, relevant search terms for best results.</li>
  <li>Facebook may return different results based on your ad account's industry and region.</li>

  <li>
    The `audienceSizeLowerBound` and `audienceSizeUpperBound` fields in the JSON response provide an
    estimated range of audience size for the interest and it is useful for targeting.
  </li>
</ul>

## Header Parameters

<HeaderAPI />

## Query Parameters

<ParamField query="search" type="string" required>
  The search query to retrieve Facebook ad interests.

  Don't forget to escape the search query, for example `Rhythm%20and%20blues%20music`.
</ParamField>

<ParamField query="limit" type="number" default={100}>
  Limit the number of ad interests returned.
</ParamField>

<RequestExample>
  ```bash cURL theme={"system"}
  curl \
  -H "Authorization: Bearer API_KEY" \
  -X GET https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music
  ```

  ```javascript JavaScript theme={"system"}
  const API_KEY = "API_KEY";

  fetch("https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music", {
        method: "GET",
        headers: {
          "Authorization": `Bearer ${API_KEY}`
        }
      })
        .then((res) => res.json())
        .then((json) => console.log(json))
        .catch(console.error);
  ```

  ```python Python theme={"system"}
  import requests

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

  r = requests.get('https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music', headers=headers)

  print(r.json())
  ```

  ```php PHP theme={"system"}
  <?php
  $curl = curl_init();

  curl_setopt_array($curl, [
    CURLOPT_URL => "https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
      "Authorization: Bearer API_KEY"
    ],
  ]);

  $response = curl_exec($curl);
  curl_close($curl);

  echo $response;
  ?>
  ```

  ```csharp C# theme={"system"}
  using System;
  using System.Net.Http;
  using System.Threading.Tasks;

  class Program
  {
      static async Task Main()
      {
          var client = new HttpClient();
          client.DefaultRequestHeaders.Add("Authorization", "Bearer API_KEY");

          var response = await client.GetAsync("https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music");
          var content = await response.Content.ReadAsStringAsync();

          Console.WriteLine(content);
      }
  }
  ```

  ```go Go theme={"system"}
  package main

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

  func main() {
      client := &http.Client{}
      req, _ := http.NewRequest("GET", "https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music", nil)
      req.Header.Add("Authorization", "Bearer API_KEY")

      resp, _ := client.Do(req)
      body, _ := ioutil.ReadAll(resp.Body)

      fmt.Println(string(body))
  }
  ```

  ```java Java theme={"system"}
  import java.net.URI;
  import java.net.http.HttpClient;
  import java.net.http.HttpRequest;
  import java.net.http.HttpResponse;

  public class GetAdInterests {
      public static void main(String[] args) throws Exception {
          HttpClient client = HttpClient.newHttpClient();
          HttpRequest request = HttpRequest.newBuilder()
                  .uri(URI.create("https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music"))
                  .header("Authorization", "Bearer API_KEY")
                  .GET()
                  .build();

          HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
          System.out.println(response.body());
      }
  }
  ```

  ```ruby Ruby theme={"system"}
  require 'net/http'
  require 'json'

  uri = URI('https://api.ayrshare.com/api/ads/facebook/interests?search=Rhythm%20and%20blues%20music')
  req = Net::HTTP::Get.new(uri)
  req['Authorization'] = 'Bearer API_KEY'

  res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http|
    http.request(req)
  }

  puts res.body
  ```
</RequestExample>

<ResponseExample>
  ```json 200: Success theme={"system"}
  {
      "status": "success",
      "interests": [
          {
              "id": "6003195554098",
              "name": "Rhythm and blues music",
              "topic": "News and entertainment",
              "audienceSizeLowerBound": 669180255,
              "audienceSizeUpperBound": 786955980
          },
          {
              "id": "6003470511564",
              "name": "Do it yourself (DIY)",
              "topic": "Hobbies and activities",
              "audienceSizeLowerBound": 418387661,  // Lower bound of audience size
              "audienceSizeUpperBound": 492023890  // Upper bound of audience size
          },
          {
              "id": "6002926036121",
              "name": "Italy",
              "topic": "Travel, places and events",
              "audienceSizeLowerBound": 279313350,  // Lower bound of audience size
              "audienceSizeUpperBound": 328472500  // Upper bound of audience size
          }
      ],
      "count": 3,
      "lastUpdated": "2025-03-27T01:01:38.547Z",
      "nextUpdate": "2025-03-27T01:12:38.547Z"
  }
  ```

  ```json 400: Ad interests error theme={"system"}
  {
    "action": "get ad interests",
    "status": "error",
    "code": 368,
    "message": "Error getting ad interests. Please try again or contact us if the issue persists."
  }
  ```
</ResponseExample>