Step 2 · Enable the APIs

Before Kura-chan can talk to your Google account, the three APIs it needs must be turned on in the Google Cloud project you created in Step 1. This takes about a minute and only needs to be done once per project.

Prerequisites

• You completed Step 1 · Create a GCP project and noted the project ID (something like kura-chan-personal).
• You’re signed into console.cloud.google.com with the same Google account you plan to connect to Kura-chan.

Enable the three APIs

1. Open the API Library

   In the Google Cloud Console, make sure the project picker at the top of the page shows your Kura-chan project — not your default personal project.

   From the left navigation, choose APIs & Services → Library. Or jump directly to console.cloud.google.com/apis/library.

2. Enable Gmail API

   Type Gmail API into the search box, click the result, then press the blue Enable button. The page updates within a few seconds; if you see a “Manage” button instead, the API is already enabled.

3. Enable Google Calendar API

   Use the back arrow or browser back button to return to the Library. Search Google Calendar API, open it, click Enable.

4. Enable Google Drive API

   Same pattern: back to the Library, search Google Drive API, click Enable.

5. Verify all three appear under Enabled APIs

   From the left nav, go to APIs & Services → Enabled APIs & services. You should see all three in the list. Order doesn’t matter.

   Tip

   If the list is long, filter by typing in the search box at the top. You’re looking for exactly: Gmail API, Google Calendar API, Google Drive API.

Common gotchas

If the Enable button is greyed out

Your account doesn’t have permission to enable APIs on this project. This usually means you’re looking at a Workspace project owned by your employer or school. Switch to a personal Google account, or create the project under one — see Step 1.

If you accidentally enable a paid API

Gmail, Calendar, and Drive all have generous free quotas that personal Kura-chan use will never approach. But Google Cloud Console will sometimes suggest related APIs (Cloud Storage, BigQuery) — those do bill. Only enable the three named in this guide.

What these APIs give Kura-chan access to

Enabling the API is a separate step from granting Kura-chan permission to use it — that happens in Step 6 when you sign in via OAuth. For reference, the OAuth scopes Kura-chan requests are:

Service	OAuth scope requested
Gmail	gmail.readonly
Google Calendar	calendar.readonly
Google Drive	drive.readonly

Each scope grants read-only access. Kura-chan can see your messages, events, and files, but cannot send, modify, or delete anything.

What’s next

You haven’t given Kura-chan any access yet — you’ve only made it possible to. In the next step you’ll configure the OAuth consent screen, which is what users see when Kura-chan asks for permission.