Get Ad Audience

LinkedIn to SHA256

The LinkedIn to SHA256 API retrieves a SHA256 and MD5 hashed email for a LinkedIn profile, covering both a business and a personal address.

It returns a single business hash and a single personal hash in each format, giving you broad coverage for audience matching across ad platforms. Use this when you need a full match key set for a LinkedIn-identified contact, for example to maximise match rates when uploading customer lists to Meta, Google, or LinkedIn Ads.

Use this endpoint to:

Maximise match rates on ad platform customer lists
Build a complete hashed identity set for one contact
Bridge LinkedIn-sourced contacts into advertising audiences

Need multiple SHA256s? This API returns only ONE SHA256. If you are running ads and want MULTIPLE SHA256’s, and are willing to spend at least $10k/yr, please click here and talk to our data team.

Fair Use Policy: This API is subject to our Fair Use Policy for Enrichment.

Plan Availability: This endpoint is not available on the $397 / month and $997 / month plans. Calls from those plans return 403 with plan_restricted. It is a plan condition, so retrying or topping up tokens does not clear it.

Response fields: Each hash field holds one string, not an array. A field with no data is left out of results, so a profile with only a business email returns just the business_ fields. Check for a field before reading it.

Outcomes: A lookup that finds nothing is not an error. It returns HTTP 200 with status: "not_found", empty or null results, and the usual metadata — and costs no tokens, though it still counts as one request against your Fair Use requests limit. Read status, not the HTTP code, to tell a hit from a miss. The API’s only 404 is an unknown or retired tool name.

POST

linkedin_to_sha256

LinkedIn to SHA256

curl --request POST \
  --url https://api.moltsets.com/api/v1/tools/linkedin_to_sha256 \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'User-Agent: <user-agent>' \
  --data '
{
  "linkedin_url": "https://linkedin.com/in/retentionadam"
}
'

import requests

url = "https://api.moltsets.com/api/v1/tools/linkedin_to_sha256"

payload = { "linkedin_url": "https://linkedin.com/in/retentionadam" }
headers = {
    "User-Agent": "<user-agent>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'User-Agent': '<user-agent>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({linkedin_url: 'https://linkedin.com/in/retentionadam'})
};

fetch('https://api.moltsets.com/api/v1/tools/linkedin_to_sha256', 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.moltsets.com/api/v1/tools/linkedin_to_sha256",
  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([
    'linkedin_url' => 'https://linkedin.com/in/retentionadam'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "User-Agent: <user-agent>"
  ],
]);

$response = curl_exec($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.moltsets.com/api/v1/tools/linkedin_to_sha256"

	payload := strings.NewReader("{\n  \"linkedin_url\": \"https://linkedin.com/in/retentionadam\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("User-Agent", "<user-agent>")
	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.moltsets.com/api/v1/tools/linkedin_to_sha256")
  .header("User-Agent", "<user-agent>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"linkedin_url\": \"https://linkedin.com/in/retentionadam\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.moltsets.com/api/v1/tools/linkedin_to_sha256")

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

request = Net::HTTP::Post.new(url)
request["User-Agent"] = '<user-agent>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"linkedin_url\": \"https://linkedin.com/in/retentionadam\"\n}"

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

{
  "results": {
    "linkedin_slug": "john-smith-123",
    "business_SHA256_array": "f101da855ed67dc34c9729f04df8aeefXXXXX",
    "business_md5_array": "900b89c0e5ece81f7fb0a72ef3dXXXXX",
    "personal_SHA256_array": "266f422db074460bb5bf41984c3aXXXXX",
    "personal_md5_array": "0c86fde3392c84d6514de378dc1XXXXX"
  },
  "status": "ok",
  "metadata": {
    "fair_use": {
      "records_remaining_5h": 179999,
      "records_reset_5h": "2026-07-15T18:53:16Z",
      "records_remaining_1w": 899999,
      "records_reset_1w": "2026-07-22T13:53:16Z"
    }
  }
}

Authorizations

Authorization

string

header

required

Pass your API key as a Bearer token. Keys follow the format ms_XXXXXXXXXXX.

Headers

User-Agent

string

required

Identifies the calling client. Any non-empty value is accepted — MoltSets does not validate its contents. Requests without this header are rejected with 403 Forbidden (error.code: forbidden).

Body

application/json

linkedin_url

string

required

Example:

"https://linkedin.com/in/retentionadam"

Response

Success

LinkedIn to SHA256

curl --request POST \
  --url https://api.moltsets.com/api/v1/tools/linkedin_to_sha256 \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'User-Agent: <user-agent>' \
  --data '
{
  "linkedin_url": "https://linkedin.com/in/retentionadam"
}
'

import requests

url = "https://api.moltsets.com/api/v1/tools/linkedin_to_sha256"

payload = { "linkedin_url": "https://linkedin.com/in/retentionadam" }
headers = {
    "User-Agent": "<user-agent>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'User-Agent': '<user-agent>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({linkedin_url: 'https://linkedin.com/in/retentionadam'})
};

fetch('https://api.moltsets.com/api/v1/tools/linkedin_to_sha256', 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.moltsets.com/api/v1/tools/linkedin_to_sha256",
  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([
    'linkedin_url' => 'https://linkedin.com/in/retentionadam'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "User-Agent: <user-agent>"
  ],
]);

$response = curl_exec($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.moltsets.com/api/v1/tools/linkedin_to_sha256"

	payload := strings.NewReader("{\n  \"linkedin_url\": \"https://linkedin.com/in/retentionadam\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("User-Agent", "<user-agent>")
	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.moltsets.com/api/v1/tools/linkedin_to_sha256")
  .header("User-Agent", "<user-agent>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"linkedin_url\": \"https://linkedin.com/in/retentionadam\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.moltsets.com/api/v1/tools/linkedin_to_sha256")

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

request = Net::HTTP::Post.new(url)
request["User-Agent"] = '<user-agent>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"linkedin_url\": \"https://linkedin.com/in/retentionadam\"\n}"

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

{
  "results": {
    "linkedin_slug": "john-smith-123",
    "business_SHA256_array": "f101da855ed67dc34c9729f04df8aeefXXXXX",
    "business_md5_array": "900b89c0e5ece81f7fb0a72ef3dXXXXX",
    "personal_SHA256_array": "266f422db074460bb5bf41984c3aXXXXX",
    "personal_md5_array": "0c86fde3392c84d6514de378dc1XXXXX"
  },
  "status": "ok",
  "metadata": {
    "fair_use": {
      "records_remaining_5h": 179999,
      "records_reset_5h": "2026-07-15T18:53:16Z",
      "records_remaining_1w": 899999,
      "records_reset_1w": "2026-07-22T13:53:16Z"
    }
  }
}

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Account

LinkedIn to SHA256

Authorizations

Headers

Body

Response