X (Twitter) Hashtag Search API. Hashtags matching your search.

Hashtags related to a keyword or topic. We handle the proxies, blocks and platform changes.

Returns the X (Twitter) hashtags a web search finds for a keyword or topic, each with its name as X spells it and its link. Use it to discover a topic's hashtags and their variants, then the X (Twitter) Post Search API for the posts that carry one. Page through results with the cursor.

GET /v1/x/search_hashtags

Read the API reference

1 credit per page, $0.75–$1.97 per 1,000 pages
16 typed fields null when unknown
50 hashtags per page, the search engine's ranking (most relevant first)
query is all it needs, e.g. cooking

Send one request. Get up to 50 hashtags back.

Copy the request in your language, or hand it to your agent. Sign up for an API key and your first 100 credits are free.

$ npm install socialtap

query = cooking

Open in playground

GET /v1/x/search_hashtagsTry in

const params = new URLSearchParams({
  query: "cooking",
});
const res = await fetch(`https://socialtap.dev/v1/x/search_hashtags?${params}`, {
  headers: { "x-api-key": process.env.SOCIALTAP_API_KEY ?? "" },
});
const body = await res.json();
if (!res.ok) throw new Error(`${body.error.code}: ${body.error.message}`);
const { data, page, meta } = body;
console.log(data, meta.credits_charged);

import os

import requests

res = requests.get(
    "https://socialtap.dev/v1/x/search_hashtags",
    params={"query": "cooking"},
    headers={"x-api-key": os.environ["SOCIALTAP_API_KEY"]},
)
body = res.json()
if not res.ok:
    raise RuntimeError(f"{body['error']['code']}: {body['error']['message']}")
data, page, meta = body["data"], body["page"], body["meta"]
print(data, meta["credits_charged"])

require "json"
require "net/http"

uri = URI("https://socialtap.dev/v1/x/search_hashtags")
uri.query = URI.encode_www_form('query' => 'cooking')
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = ENV.fetch("SOCIALTAP_API_KEY")
res = Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == "https") { |http| http.request(req) }
body = JSON.parse(res.body)
raise "#{body["error"]["code"]}: #{body["error"]["message"]}" unless res.is_a?(Net::HTTPSuccess)
pp body["data"]
puts body["meta"]["credits_charged"]

<?php

$query = http_build_query([
    'query' => 'cooking',
]);
$ch = curl_init('https://socialtap.dev/v1/x/search_hashtags?' . $query);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['x-api-key: ' . getenv('SOCIALTAP_API_KEY')],
]);
$body = json_decode(curl_exec($ch), true);
if (curl_getinfo($ch, CURLINFO_RESPONSE_CODE) >= 400) {
    throw new RuntimeException($body['error']['code'] . ': ' . $body['error']['message']);
}
print_r($body['data']);
echo $body['meta']['credits_charged'], PHP_EOL;

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"net/url"
	"os"
)

func main() {
	q := url.Values{}
	q.Set("query", "cooking")
	req, err := http.NewRequest("GET", "https://socialtap.dev/v1/x/search_hashtags?"+q.Encode(), nil)
	if err != nil {
		log.Fatal(err)
	}
	req.Header.Set("x-api-key", os.Getenv("SOCIALTAP_API_KEY"))
	res, err := http.DefaultClient.Do(req)
	if err != nil {
		log.Fatal(err)
	}
	defer res.Body.Close()
	var body struct {
		Data  json.RawMessage `json:"data"`
		Page  json.RawMessage `json:"page"`
		Meta  map[string]any  `json:"meta"`
		Error *struct {
			Code    string `json:"code"`
			Message string `json:"message"`
		} `json:"error"`
	}
	if err := json.NewDecoder(res.Body).Decode(&body); err != nil {
		log.Fatal(err)
	}
	if body.Error != nil {
		log.Fatalf("%s: %s", body.Error.Code, body.Error.Message)
	}
	fmt.Println(string(body.Data), body.Meta["credits_charged"])
}

curl 'https://socialtap.dev/v1/x/search_hashtags?query=cooking' \
  -H "x-api-key: $SOCIALTAP_API_KEY"

{
  "data": [
    {
      "approximate_fields": [],
      "community": null,
      "details": null,
      "hashtag": {
        "description": null,
        "id": null,
        "metrics": {
          "post_count": null
        },
        "name": "cooking",
        "thumbnail_url": null,
        "url": "https://x.com/hashtag/cooking"
      },
      "matched_url": "https://x.com/hashtag/cooking?f=live",
      "place": null,
      "platform": "x",
      "platform_specific": {},
      "position": 0,
      "post": null,
      "profile": null,
      "snippet": "We’ve detected that JavaScript is disabled in this browser. Please enable JavaScript or switch to a supported browser to continue using x.com. You can see a list of supported browsers in our Help Center · Условия за ползване Политика за поверителност ...",
      "sound": null,
      "title": "\"#cooking\" - Results on X | Live Posts & Updates",
      "type": "hashtag",
      "unknown_fields": [],
      "url": "https://x.com/hashtag/cooking"
    },
    {
      "approximate_fields": [],
      "community": null,
      "details": null,
      "hashtag": {
        "description": null,
        "id": null,
        "metrics": {
          "post_count": null
        },
        "name": "Cooking_illife",
        "thumbnail_url": null,
        "url": "https://x.com/hashtag/cooking_illife"
      },
      "matched_url": "https://x.com/hashtag/Cooking_illife",
      "place": null,
      "platform": "x",
      "platform_specific": {},
      "position": 1,
      "post": null,
      "profile": null,
      "snippet": "From breaking news and entertainment to sports and politics, get the full story with all the live commentary.",
      "sound": null,
      "title": "\"#Cooking_illife\" - Results on X | Live Posts & Updates",
      "type": "hashtag",
      "unknown_fields": [],
      "url": "https://x.com/hashtag/cooking_illife"
    },
    {
      "approximate_fields": [],
      "community": null,
      "details": null,
      "hashtag": {
        "description": null,
        "id": null,
        "metrics": {
          "post_count": null
        },
        "name": "mylovecooking",
        "thumbnail_url": null,
        "url": "https://x.com/hashtag/mylovecooking"
      },
      "matched_url": "https://x.com/hashtag/mylovecooking",
      "place": null,
      "platform": "x",
      "platform_specific": {},
      "position": 2,
      "post": null,
      "profile": null,
      "snippet": "From breaking news and entertainment to sports and politics, get the full story with all the live commentary.",
      "sound": null,
      "title": "\"#mylovecooking\" - Results on X | Live Posts & Updates",
      "type": "hashtag",
      "unknown_fields": [],
      "url": "https://x.com/hashtag/mylovecooking"
    }
  ],
  "page": {
    "has_more": true,
    "next_cursor": "c1.EXAMPLE_CURSOR",
    "next_cursor_expires_at": "2026-10-26T12:00:00Z",
    "end_reason": null
  },
  "meta": {
    "request_id": "req_3f9c2a7d1e8b4c6a9f0e2d4b6a8c0e1f",
    "platform": "x",
    "source": "web_search",
    "is_cached": false,
    "credits_charged": 1,
    "latency_ms": 1033,
    "fetched_at": "2026-10-25T12:00:00Z",
    "input": null,
    "credits_remaining": 9999,
    "client_request_id": null,
    "warnings": []
  }
}

import { SocialTap } from "socialtap";

const client = new SocialTap(); // apiKey defaults to process.env.SOCIALTAP_API_KEY

const res = await client.x.searchHashtags.list({ query: "cooking" });
console.log(res.data);
console.log(res.credits.charged, res.meta.request_id);

import java.net.URI;
import java.net.URLEncoder;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;

public class Main {
    public static void main(String[] args) throws Exception {
        String query = "query=" + encode("cooking");
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://socialtap.dev/v1/x/search_hashtags?" + query))
            .header("x-api-key", System.getenv("SOCIALTAP_API_KEY"))
            .GET()
            .build();
        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());
        // An error is {"error": {"code", "message", ...}}; success is {data, meta}, meta.credits_charged its price.
        if (response.statusCode() >= 400) throw new RuntimeException(response.body());
        System.out.println(response.body());
    }

    static String encode(String value) {
        return URLEncoder.encode(value, StandardCharsets.UTF_8);
    }
}

using System.Text.Json;

using var http = new HttpClient();
http.DefaultRequestHeaders.Add("x-api-key", Environment.GetEnvironmentVariable("SOCIALTAP_API_KEY"));

var query = string.Join("&",
    "query=" + Uri.EscapeDataString("cooking"));
var res = await http.GetAsync("https://socialtap.dev/v1/x/search_hashtags?" + query);
using var body = JsonDocument.Parse(await res.Content.ReadAsStringAsync());
if (!res.IsSuccessStatusCode)
{
    var error = body.RootElement.GetProperty("error");
    throw new Exception($"{error.GetProperty("code")}: {error.GetProperty("message")}");
}
Console.WriteLine(body.RootElement.GetProperty("data"));
Console.WriteLine(body.RootElement.GetProperty("meta").GetProperty("credits_charged"));

// Cargo.toml: reqwest = { version = "0.12", features = ["blocking", "json"] }, serde_json = "1"
use std::env;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let res = reqwest::blocking::Client::new()
        .get("https://socialtap.dev/v1/x/search_hashtags")
        .query(&[("query", "cooking")])
        .header("x-api-key", env::var("SOCIALTAP_API_KEY")?)
        .send()?;
    let ok = res.status().is_success();
    let body: serde_json::Value = res.json()?;
    if !ok {
        return Err(format!("{}: {}", body["error"]["code"], body["error"]["message"]).into());
    }
    println!("{} {}", body["data"], body["meta"]["credits_charged"]);
    Ok(())
}

200 OK · GET https://socialtap.dev/v1/x/search_hashtagsLong arrays and strings are shortened here. Real responses are complete.Docs

One schema on 6 platforms.

The response reference lists every field, its type and when it is null. See the full schema.

Null means unknown
A field X doesn't show is null, never zero or an empty string, so a real zero always means zero.
What it accepts
Words to find X hashtags by, as a web search reads them: a topic, a niche, a name (cooking, bitcoin, "machine learning", 料理).
Write one parser
X, TikTok, Instagram and 3 more platforms answer in these fields, so the code that reads one reads them all.

platformstring: Platform the item is on.
typestring: The kind of item the result names, as the resource that describes it: profile (an account), post, hashtag, sound, place or community. The item's summary is the field of that name, and a filled result's record is details.<type>. A search that finds several kinds (a platform's top search) mixes them in one list. New values may be added as more kinds are searchable; treat unknown values as other.
positioninteger: Zero-based rank of the result in the list, across pages: the search engine's order, counting only the results kept.
urlstring: The item's canonical link on the platform (the account's page for a profile, the post's for a post).
matched_urlstring: The page the index listed: the item's own page, or one of its pages that names it (a video of an account, for a profile found through it).
titlestring: The page's title as the index shows it: often the item's name, but not the item's own field. Null when the index shows none.
snippetstring: The index's excerpt of the page: often the item's description and counts as the page stated them when it was indexed, days or weeks ago. Null when the index shows none.
profileobject: The account the result names (type profile): what its link and the index's text say of it, completed from details when the result is filled. Null for every other type.

What teams build with the X (Twitter) Hashtag Search API.

Find the hashtags around a niche
Discover a hashtag's spellings and variants
Turn a keyword into hashtags to track
Pick tags for a campaign

Good to know before you build.

X has no logged-out search, so results come from a web search engine's index of X's hashtag pages, in the engine's order.
A tag is listed when its page is indexed and its name or page holds your words: bitcoin also finds BitcoinCash, and a tag can come up because a post quoted on its page uses the word.
There is no fill=true, because X has no logged-out hashtag lookup.
The index goes only so deep, so a search usually ends after a few pages (page.end_reason end).
Case doesn't matter, and the query's own site: operators are removed.

1 credit per page. Failed requests are free.

Buy credits once and spend them on any endpoint, on any platform.

Plans and packs How this endpoint is priced How credits work

Source	Price per successful page	Per 1,000 pages
Any source	1 credit	$0.75–$1.97

Cache hits are free.
Credits from packs and top-ups never expire.
A monthly plan's credits are spent first, and what is left of them ends at each renewal.
Prices exclude tax: sales tax is added at checkout where it applies.
Outside the US, plans and packs are sold to businesses: checkout asks for your VAT, GST or other business tax ID.

Questions about the X (Twitter) Hashtag Search API.

Try it with your own search.

Type it in the playground, or copy the request into your code.

free credits

No credit card
Failed requests are free
Works on all 218 endpoints

Start for free Read the docs

X (Twitter) Hashtag Search API. Hashtags matching your search.

X (Twitter) Hashtag Search API at a glance

Send one request. Get up to 50 hashtags back.

One schema on 6 platforms.

Null means unknown

What it accepts

Write one parser

What teams build with the X (Twitter) Hashtag Search API.

Find the hashtags around a niche

Discover a hashtag's spellings and variants

Turn a keyword into hashtags to track

Pick tags for a campaign

Good to know before you build.

1 credit per page. Failed requests are free.

Questions about the X (Twitter) Hashtag Search API.

Web results on 5 more platforms.

X API. 7 endpoints, one key.

Try it with your own search.