---
title: "Douyin sec_uid: What It Is and How to Get It · SocialToAI"
canonical: https://socialtoai.com/can-ai-read/douyin-sec-uid/
published: 2026-11-06
updated: 2026-11-06
---

# What is a Douyin sec_uid, and how do I get it?

A Douyin sec_uid is the long code starting `MS4wLjABAAAA` that identifies an account, in a profile's web link after `/user/`. To get it, copy it from that link, or give the profile call any profile link or share text, 2 credits, and read `id` in the answer. It is not the short Douyin number on a profile, and not a Xingtu creator ID.

- Page: https://socialtoai.com/can-ai-read/douyin-sec-uid/
- Published: 2026-11-06
- Last updated: 2026-11-06

## Where to get it

| You have | What it looks like | How to get it |
| --- | --- | --- |
| A profile's web link | https://www.douyin.com/user/MS4wLjABAAAAZ0aPDJzFhBrs0q3wVsp2a9WWrBuAUMsVyygoaO0bCw8 | Copy what follows `/user/`, up to any `?` |
| A share link from the app | https://v.douyin.com/… | Give it to the call below; the answer's `id` is the sec_uid |
| Only a name |  | Search first with `search` and take the account from a result, or search Xingtu if you need its data |

## Not to be confused with

| ID | What it is | Takes it |
| --- | --- | --- |
| sec_uid | The long code starting MS4w. Every Douyin account has one | [Account profile](https://socialtoai.com/douyin-user-profile-api.md), [account posts](https://socialtoai.com/douyin-user-posts-api.md) |
| Douyin number | The handle shown on a profile, which its owner can change | Not taken as an ID here; search for it |
| Xingtu creator ID | A string of digits on Xingtu, the platform's creator marketplace | [The Xingtu interfaces](https://socialtoai.com/douyin-kol-search-api.md) |

## One real request

**cURL**

```
curl https://api.socialtoai.com/v1/user_profile \
  -H "Authorization: Bearer $SOCIALTOAI_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
    "platform": "douyin",
    "id": "MS4wLjABAAAAZ0aPDJzFhBrs0q3wVsp2a9WWrBuAUMsVyygoaO0bCw8"
  }'
```

**A recorded answer (names and text removed)**

```
{
  "request_id": "req_00000000-0000-4000-8000-000000000001",
  "schema_version": "v1",
  "fetched_at": "2026-10-12T19:01:22.000Z",
  "action": "user_profile",
  "platform": "douyin",
  "status": "ok",
  "items": [
    {
      "platform": "douyin",
      "id": "…",
      "ref": "…",
      "approx": [],
      "type": "account",
      "username": "…",
      "name": "…",
      "url": "https://example.com/…",
      "bio": "…",
      "verified": true,
      "followers": 4022,
      "following": 115,
      "posts_count": 1094
    }
  ],
  "unavailable": [],
  "warnings": [],
  "applied_params": {
    "id": "MS4wLjABAAAAZ0aPDJzFhBrs0q3wVsp2a9WWrBuAUMsVyygoaO0bCw8"
  },
  "cost_credits": 2,
  "billing": {
    "cost_credits": 2,
    "balance_credits": 98,
    "today_spend_credits": 2,
    "daily_limit_credits": null,
    "daily_remaining_credits": null,
    "display": "This call: 2 credits (≈ $0.0067). Balance: 98 credits (≈ $0.33)."
  },
  "replayed": false
}
```

## FAQ

### Why do all sec_uids start the same?

`MS4wLjABAAAA` is a fixed prefix of the format; what tells accounts apart comes after it. This is what we see in the IDs, not something Douyin documents.

### Does it change?

It stays with the account as far as we have seen, unlike the Douyin number, which its owner can change. Keep it rather than the name.

### Do I need to sign in to Douyin?

No. It uses no account of yours, so it cannot affect your account.

- [Douyin account profile API](https://socialtoai.com/douyin-user-profile-api.md): The whole call, every parameter and field.
- [Douyin API](https://socialtoai.com/platforms/douyin.md): Every call on Douyin and its credits.