Setup Kling

April 18, 2025 (July 20, 2026)

Table of contents

1. Create Kling AI account
2. Add your account
3. Seeing a login slider captcha?
   1. Prefer to grab the values by hand?

Approximately 2 minutes to complete setup steps.

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This is the setup guide for Kling API. An active Kling AI subscription and a useapi.net subscription are required for the API to work.

Create Kling AI account

Navigate to https://kling.ai/app/ and sign up with an email account. Our API does not support Gmail or Apple accounts. We strongly recommend creating a separate Kling AI account designated for API work.

Add your account

Most Kling accounts connect with just an email and password. Enter them below and choose Add Account (or Verify to test the credentials first). A 200 response means success. You can also call POST /accounts directly.

API Token (see Setup useapi.net) email    password action Verify — test credentials only Add Account — required to complete setup

Seeing a login slider captcha?

Some Kling accounts are asked to solve a security slider at login. Kling decides this from the account’s own risk history, so a brand-new or heavily-used account may get it while others never do. Our server cannot solve that slider, so for those accounts the Add Account step above returns:

{ "error": "Unable to login (400002)" }

If you never see the slider when you sign in to Kling yourself, you do not need any of this — email and password is all it takes.

When you do hit it, connect the account from your own browser instead, where the slider appears and you solve it once. Our connect tool guides you through it: you sign in to Kling a single time, it captures your signed-in session — a durable passToken plus your did and userId — and adds the account with those values. From then on the API refreshes the session with the passToken (valid about 21 days and rotated on each use), so no slider and no password login are needed.

Open the Kling connect tool

The tool shows the exact steps — copy a short code, paste it into Kling’s browser Console, sign in and solve the slider, then paste your useapi.net API token and click Add account.

Prefer to grab the values by hand?

You can also read the three values yourself and pass them to POST /accounts. After you have signed in to Kling and solved the slider, open Developer Tools on kling.ai/app 1, switch to the Application tab 2, then under Cookies select https://kling.ai 3. Copy the value of these three cookies:

• did — a device id
• passToken — the durable session token (about 21 days, rotated on each use)
• userId — your numeric account id

Send all three together on POST /accounts, alongside your email, password, and maxJobs. Provide them only for an account that hits the slider — leave them out and the normal email and password login is used.

Paste them into the form below with your email and password, then choose Add Account (or Verify to test first). A 200 response means success.

API Token (see Setup useapi.net) email password passToken did userId action Verify — test credentials only Add Account — required to complete setup

passToken, did, and userId are your live Kling session — keep them private and treat them like a password. The connect tool holds them in your browser and only sends them to useapi.net when you click Add account.