DataDome API Reference

Solve DataDome challenges and replay the datadome cookie.

The Captcha.fun DataDome API accepts kind, url and returns datadome cookie. Send the API_KEY header, create a solve with POST /v1/request, then poll GET /v2/response/{id} until ready is true.

What you’ll need

Your API key
The URL of the page where the challenge appears
Optional: challengeHtml
A proxy, if the result must come from your own IP (datadome_proxy)

Use kind

Good to Know

Returns the datadome cookie value, cookieHeader, and userAgent for requests to the protected site.

By default the solve targets your URL directly. If your flow uses the invisible-tags variant, pass challengeHtml with the captured protected-page HTML.

Important: The cookie is bound to the session and IP. If your requests won’t come from the solve’s IP, use a _proxy kind with a sticky proxy.

Send the Challenge

Create Solve · POST /v1/request

Send the page details with your API key. You get a solve id back right away.

POSThttps://api.captcha.fun/v1/request

curl -X POST https://api.captcha.fun/v1/request \
  -H "API_KEY: CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -d '{
  "kind": "datadome",
  "url": "https://your-domain.example/protected-page"
}'

import requests

response = requests.post(
    "https://api.captcha.fun/v1/request",
    headers={
        "API_KEY": "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
        "Content-Type": "application/json",
        "Accept": "application/json",
    },
    json={"kind": "datadome", "url": "https://your-domain.example/protected-page"},
)

print(response.status_code, response.json())

const response = await fetch("https://api.captcha.fun/v1/request", {
  method: "POST",
  headers: {
    "API_KEY": "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
    "Content-Type": "application/json",
    "Accept": "application/json"
  },
  body: JSON.stringify({
  "kind": "datadome",
  "url": "https://your-domain.example/protected-page"
})
});

console.log(response.status, await response.json());

Response

Returns the solve id. Use it to get the result.

{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "message": "Started Solving"
}

{
  "message": "invalid kind"
}

Request fields5 body fields · 2 required

Headers

Name	Type	Required	Description
API_KEY	string	Yes	Your API key
Content-Type	string	Yes	`application/json`
APP_ID	string	No	Optional app ID for request tracking

Body

Name	Type	Required	Description
kind	string	Yes	One of `datadome`, `datadome_proxy`
url	string	Yes	Page URL where the challenge appears
challengeHtml	string	No	Captured page HTML for the invisible-tags flow. Omit to use the live slider on `url`
proxy	string	No	For `_proxy` kinds: `host:port` or `host:port:username:password`
platform	string	No	Requested platform label: `windows` (default) or `mac`

Wait for the Result

Get Solve · GET /v2/response/{id}

Use the solve id to fetch the result.

GEThttps://api.captcha.fun/v2/response/{id}

Poll every second until ready is true.

GEThttps://api.captcha.fun/v1/response/{id}

Long polling: the request stays open until the solve finishes or times out. Send it once and wait.

Example

curl -X GET https://api.captcha.fun/v2/response/550e8400-e29b-41d4-a716-446655440000 \
  -H "API_KEY: CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
  -H "Accept: application/json"

import requests

response = requests.get(
    "https://api.captcha.fun/v2/response/550e8400-e29b-41d4-a716-446655440000",
    headers={
        "API_KEY": "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
        "Accept": "application/json"
    }
)

print(response.status_code, response.json())

const response = await fetch(
  "https://api.captcha.fun/v2/response/550e8400-e29b-41d4-a716-446655440000",
  {
    method: "GET",
    headers: {
      "API_KEY": "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
      "Accept": "application/json"
    }
  }
);

const data = await response.json();
console.log(response.status, data);

package main

import (
    "encoding/json"
    "fmt"
    "net/http"
)

func main() {
    req, _ := http.NewRequest("GET", "https://api.captcha.fun/v2/response/550e8400-e29b-41d4-a716-446655440000", nil)
    req.Header.Set("API_KEY", "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
    req.Header.Set("Accept", "application/json")

    client := &http.Client{}
    resp, _ := client.Do(req)
    defer resp.Body.Close()

    var result map[string]interface{}
    json.NewDecoder(resp.Body).Decode(&result)
    fmt.Println(resp.StatusCode, result)
}

import java.net.http.*;
import java.net.URI;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.captcha.fun/v2/response/550e8400-e29b-41d4-a716-446655440000"))
            .header("API_KEY", "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
            .header("Accept", "application/json")
            .GET()
            .build();

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

using System.Net.Http;

var client = new HttpClient();
client.DefaultRequestHeaders.Add("API_KEY", "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
client.DefaultRequestHeaders.Add("Accept", "application/json");

var response = await client.GetAsync("https://api.captcha.fun/v2/response/550e8400-e29b-41d4-a716-446655440000");
var result = await response.Content.ReadAsStringAsync();

Console.WriteLine($"{(int)response.StatusCode} {result}");

Response

{
  "ready": true,
  "status": "SUCCESS",
  "success": true,
  "userAgent": "RETURNED_USER_AGENT",
  "secUa": "RETURNED_SEC_CH_UA",
  "token": "a1b2c3d4e5f6g7h8i9j0~0~...,",
  "cookies": {
    "datadome": "a1b2c3d4e5f6g7h8i9j0~0~...,"
  },
  "cookieHeader": "datadome=a1b2c3d4e5f6g7h8i9j0~0~...,"
}

{
  "message": "API_KEY Header Missing"
}

Example

curl -X GET https://api.captcha.fun/v1/response/550e8400-e29b-41d4-a716-446655440000 \
  -H "API_KEY: CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
  -H "Accept: application/json"

import requests

response = requests.get(
    "https://api.captcha.fun/v1/response/550e8400-e29b-41d4-a716-446655440000",
    headers={
        "API_KEY": "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
        "Accept": "application/json"
    }
)

print(response.status_code, response.json())

const response = await fetch(
  "https://api.captcha.fun/v1/response/550e8400-e29b-41d4-a716-446655440000",
  {
    method: "GET",
    headers: {
      "API_KEY": "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
      "Accept": "application/json"
    }
  }
);

const data = await response.json();
console.log(response.status, data);

package main

import (
    "encoding/json"
    "fmt"
    "net/http"
)

func main() {
    req, _ := http.NewRequest("GET", "https://api.captcha.fun/v1/response/550e8400-e29b-41d4-a716-446655440000", nil)
    req.Header.Set("API_KEY", "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
    req.Header.Set("Accept", "application/json")

    client := &http.Client{}
    resp, _ := client.Do(req)
    defer resp.Body.Close()

    var result map[string]interface{}
    json.NewDecoder(resp.Body).Decode(&result)
    fmt.Println(resp.StatusCode, result)
}

import java.net.http.*;
import java.net.URI;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.captcha.fun/v1/response/550e8400-e29b-41d4-a716-446655440000"))
            .header("API_KEY", "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
            .header("Accept", "application/json")
            .GET()
            .build();

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

using System.Net.Http;

var client = new HttpClient();
client.DefaultRequestHeaders.Add("API_KEY", "CAPFUN-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
client.DefaultRequestHeaders.Add("Accept", "application/json");

var response = await client.GetAsync("https://api.captcha.fun/v1/response/550e8400-e29b-41d4-a716-446655440000");
var result = await response.Content.ReadAsStringAsync();

Console.WriteLine($"{(int)response.StatusCode} {result}");

Response

{
  "status": "SUCCESS",
  "success": true,
  "userAgent": "RETURNED_USER_AGENT",
  "secUa": "RETURNED_SEC_CH_UA",
  "token": "a1b2c3d4e5f6g7h8i9j0~0~...,",
  "cookies": {
    "datadome": "a1b2c3d4e5f6g7h8i9j0~0~...,"
  },
  "cookieHeader": "datadome=a1b2c3d4e5f6g7h8i9j0~0~...,"
}

{
  "message": "API_KEY Header Missing"
}

Request and response fields9 response fields

Request

Name	Type	Required	Description
id	string (UUID)	Yes	Path parameter. The `id` from Create Solve
API_KEY	string	Yes	Header. Your API key

Response Fields

Name	Type	Required	Description
ready	boolean	—	`true` when the solve is finished (v2 only)
status	string	—	`PENDING` while solving, then `SUCCESS` or `FAILURE`
success	boolean	—	Whether the solve succeeded
userAgent	string	—	Value to send as `User-Agent` when using the result. Preserve it exactly
secUa	string	—	Value to send as `Sec-CH-UA` when using the result
token	string	—	The trusted datadome cookie value minted by passing the challenge
cookies	object	—	The defense cookie family, cookie name to value
cookieHeader	string	—	The solving session's full Cookie header value, verbatim — replay it with the returned userAgent from the same egress IP
message	string	—	Failure reason. Omitted on success

Send the Cookies

datadome cookie

Replay cookieHeader as the Cookie header on outbound requests to the protected origin (or token as the bare datadome cookie value), with the returned userAgent as your User-Agent header. The cookie is bound to the solving session, so keep the replay on the same egress IP.

When using a successful result, preserve the returned userAgent as User-Agent and secUa as Sec-CH-UA.

Wrong or rejected result? Report the failed solve.

What you’ll need

Good to Know

Send the Challenge

Response

Headers

Body

Wait for the Result

Example

Response

Example

Response

Request

Response Fields

Send the Cookies

More from DataDome