> ## Documentation Index > Fetch the complete documentation index at: https://docs.stackone.com/llms.txt > Use this file to discover all available pages before exploring further. # Connect Harness with API Key – StackOne Hub > Link a Harness account in the StackOne Hub using API Key. End-user guide to authorize the integration and start using Harness actions. The token value is shown only once at creation and cannot be retrieved later — copy and store it securely. The token carries the permissions of the user who creates it, so use an account with the access your integration needs.

Generate a Harness API key token

Create a personal API key and token in Harness. The token is the API Key value StackOne needs.

Sign in on the Harness sign-in page with your Email and Password, then click Sign in.

Harness sign-in page with the Sign in button highlighted

Click your profile icon in the bottom-left corner of the navigation, then click Profile Overview in the menu that opens.

Profile menu open with Profile Overview highlighted

On your Profile Overview page, find the My API Keys section and click + API Key.

  • In the New API Key dialog, enter a Name for the key.
  • Click Save.
My API Keys section with the + API Key button highlighted

Click + Token under the API key you just created.

  • In the New Token dialog, enter a Name for the token.
  • Set the Expiration — the dialog shows the exact date the token will expire.
  • Click Generate Token.
Newly created API key with the + Token button highlighted

The token Value is displayed once — "Your new token has been generated. Please make sure to copy and store your token value somewhere safe, you won't be able to see it again."

  • Copy the token value — it starts with `pat.` (for example `pat.xxxx.xxxx.xxxx`) — and paste it into the API Key field in StackOne Hub.
  • The token value is shown only once and cannot be retrieved later.
  • Click Close.
New Token dialog showing the generated token with the Value field and Close button highlighted

Find your account identifier

Your Account Id uniquely identifies your Harness account — StackOne needs it as the
Account Identifier.

Click Account Settings in the left navigation.

Left navigation with Account Settings highlighted

On the Account Settings page, under General, click Account Details.

Account Settings page with the Account Details tile highlighted under General

On the Account Overview page, copy the Account Id value and paste it into the
Account Identifier field in StackOne Hub.

  • Example: `Abc123XyzQRstUVwx456yz`
  • Alternatively, copy it from your browser URL after /account/ (e.g. `app.harness.io/ng/account/YOUR_ACCOUNT_ID/...`).
Account Overview page with the Account Id value highlighted

Linking the Account from the Hub

Use one of the three Linking Account Methods to access the Hub. Fill out the following fields using details from your provider:
  • API Key
  • Account Identifier
  • Click Connect
  • If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider's authorization flow.
  • Once authorization is successful, you will see a confirmation popup

If the account linking is successful, you will see the newly linked account in your Accounts page.