credential management documentation (#2389)

fern/credentials/credit_cards.mdx

@@ -0,0 +1,81 @@
+---
+title: Manage Credit Cards
+subtitle: How to manage credit cards in Skyvern
+slug: credentials/credit-cards
+---
+
+## Manage credit cards in Skyvern Cloud
+You can go to [Skyvern's Credentials page](https://app.skyvern.com/credentials) to manage your credit cards.
+
+
+**Add a new credit card credential:**
+
+<img src="../images/credential_management/add_credit_card.png" />
+
+<img src="../images/credential_management/add_credit_card_detail.png" />
+
+**Delete a credit card credential:**
+
+Click the trash icon and confirm the deletion. If you do this, the credit card will be deleted from Skyvern PERMANENTLY.
+<img src="../images/credential_management/delete_credit_card.png" />
+
+**Update a credit card credential:**
+<Warning>Skyvern only supports adding and deleting credit cards. To update a credit card, you need to delete the existing credit card and create a new one.</Warning>
+
+## Manage credit cards with Skyvern's API or SDK
+We also have [API and SDK](/api-reference/api-reference/credentials/create-credential) supports for credit card management:
+
+**Create a new credit card credential:**
+
+<CodeBlocks>
+```python title="python"
+from skyvern import Skyvern
+skyvern = Skyvern(api_key="your_api_key")
+await skyvern.credentials.create_credential(
+    name="My Credit Card",
+    credential_type="credit_card",
+    credential={
+        "card_number": "4242424242424242",
+        "card_cvv": "424",
+        "card_exp_month": "12",
+        "card_exp_year": "2028",
+        "card_brand": "visa",
+        "card_holder_name": "John Doe",
+    },
+)
+```
+
+```bash title="curl"
+curl -X POST https://api.skyvern.com/v1/credentials \
+     -H "x-api-key: YOUR_API_KEY" \
+     -H "Content-Type: application/json" \
+     -d '{
+      "name": "My Credit Card",
+      "credential_type": "credit_card",
+      "credential": {
+        "card_number": "4242424242424242",
+        "card_cvv": "424",
+        "card_exp_month": "12",
+        "card_exp_year": "2028",
+        "card_brand": "visa",
+        "card_holder_name": "John Doe"
+      }
+    }'
+```
+</CodeBlocks>
+
+**Delete a password credential:**
+
+<CodeBlocks>
+```python title="python"
+from skyvern import Skyvern
+
+skyvern = Skyvern(api_key="your_api_key")
+await skyvern.credentials.delete_credential(credential_id="cred_123456789")
+```
+
+```bash title="curl"
+curl -X POST https://api.skyvern.com/v1/credentials/cred_1234567890/delete \
+	 -H "x-api-key: YOUR_API_KEY"
+```
+</CodeBlocks>