diff --git a/skyvern/forge/sdk/schemas/credentials.py b/skyvern/forge/sdk/schemas/credentials.py
index c27997ea..188590ba 100644
--- a/skyvern/forge/sdk/schemas/credentials.py
+++ b/skyvern/forge/sdk/schemas/credentials.py
@@ -5,78 +5,126 @@ from pydantic import BaseModel, ConfigDict, Field
 
 
 class CredentialType(StrEnum):
+    """Type of credential stored in the system."""
+
     PASSWORD = "password"
     CREDIT_CARD = "credit_card"
 
 
 class PasswordCredentialResponse(BaseModel):
-    username: str
+    """Response model for password credentials, containing only the username."""
+
+    username: str = Field(..., description="The username associated with the credential", examples=["user@example.com"])
 
 
 class CreditCardCredentialResponse(BaseModel):
-    last_four: str
-    brand: str
+    """Response model for credit card credentials, containing only the last four digits and brand."""
+
+    last_four: str = Field(..., description="Last four digits of the credit card number", examples=["1234"])
+    brand: str = Field(..., description="Brand of the credit card", examples=["visa"])
 
 
 class PasswordCredential(BaseModel):
-    password: str
-    username: str
-    totp: str | None = None
+    """Base model for password credentials."""
+
+    password: str = Field(..., description="The password value", examples=["securepassword123"])
+    username: str = Field(..., description="The username associated with the credential", examples=["user@example.com"])
+    totp: str | None = Field(
+        None,
+        description="Optional TOTP (Time-based One-Time Password) string used to generate 2FA codes",
+        examples=["JBSWY3DPEHPK3PXP"],
+    )
 
 
 class NonEmptyPasswordCredential(PasswordCredential):
-    password: str = Field(..., min_length=1)
-    username: str = Field(..., min_length=1)
+    """Password credential model that requires non-empty values."""
+
+    password: str = Field(
+        ..., min_length=1, description="The password value (must not be empty)", examples=["securepassword123"]
+    )
+    username: str = Field(
+        ...,
+        min_length=1,
+        description="The username associated with the credential (must not be empty)",
+        examples=["user@example.com"],
+    )
 
 
 class CreditCardCredential(BaseModel):
-    card_number: str
-    card_cvv: str
-    card_exp_month: str
-    card_exp_year: str
-    card_brand: str
-    card_holder_name: str
+    """Base model for credit card credentials."""
+
+    card_number: str = Field(..., description="The full credit card number", examples=["4111111111111111"])
+    card_cvv: str = Field(..., description="The card's CVV (Card Verification Value)", examples=["123"])
+    card_exp_month: str = Field(..., description="The card's expiration month", examples=["12"])
+    card_exp_year: str = Field(..., description="The card's expiration year", examples=["2025"])
+    card_brand: str = Field(..., description="The card's brand", examples=["visa"])
+    card_holder_name: str = Field(..., description="The name of the card holder", examples=["John Doe"])
 
 
 class NonEmptyCreditCardCredential(CreditCardCredential):
-    card_number: str = Field(..., min_length=1)
-    card_cvv: str = Field(..., min_length=1)
-    card_exp_month: str = Field(..., min_length=1)
-    card_exp_year: str = Field(..., min_length=1)
-    card_brand: str = Field(..., min_length=1)
-    card_holder_name: str = Field(..., min_length=1)
+    """Credit card credential model that requires non-empty values."""
+
+    card_number: str = Field(
+        ..., min_length=1, description="The full credit card number (must not be empty)", examples=["4111111111111111"]
+    )
+    card_cvv: str = Field(..., min_length=1, description="The card's CVV (must not be empty)", examples=["123"])
+    card_exp_month: str = Field(
+        ..., min_length=1, description="The card's expiration month (must not be empty)", examples=["12"]
+    )
+    card_exp_year: str = Field(
+        ..., min_length=1, description="The card's expiration year (must not be empty)", examples=["2025"]
+    )
+    card_brand: str = Field(..., min_length=1, description="The card's brand (must not be empty)", examples=["visa"])
+    card_holder_name: str = Field(
+        ..., min_length=1, description="The name of the card holder (must not be empty)", examples=["John Doe"]
+    )
 
 
 class CredentialItem(BaseModel):
-    item_id: str
-    name: str
-    credential_type: CredentialType
-    credential: PasswordCredential | CreditCardCredential
+    """Model representing a credential item in the system."""
+
+    item_id: str = Field(..., description="Unique identifier for the credential item", examples=["cred_1234567890"])
+    name: str = Field(..., description="Name of the credential", examples=["Skyvern Login"])
+    credential_type: CredentialType = Field(..., description="Type of the credential. Eg password, credit card, etc.")
+    credential: PasswordCredential | CreditCardCredential = Field(..., description="The actual credential data")
 
 
 class CreateCredentialRequest(BaseModel):
-    name: str
-    credential_type: CredentialType
-    credential: NonEmptyPasswordCredential | NonEmptyCreditCardCredential
+    """Request model for creating a new credential."""
+
+    name: str = Field(..., description="Name of the credential", examples=["My Credential"])
+    credential_type: CredentialType = Field(..., description="Type of credential to create")
+    credential: NonEmptyPasswordCredential | NonEmptyCreditCardCredential = Field(
+        ...,
+        description="The credential data to store",
+        examples=[{"username": "user@example.com", "password": "securepassword123"}],
+    )
 
 
 class CredentialResponse(BaseModel):
-    credential_id: str
-    credential: PasswordCredentialResponse | CreditCardCredentialResponse
-    credential_type: CredentialType
-    name: str
+    """Response model for credential operations."""
+
+    credential_id: str = Field(..., description="Unique identifier for the credential", examples=["cred_1234567890"])
+    credential: PasswordCredentialResponse | CreditCardCredentialResponse = Field(
+        ..., description="The credential data"
+    )
+    credential_type: CredentialType = Field(..., description="Type of the credential")
+    name: str = Field(..., description="Name of the credential", examples=["My Credential"])
 
 
 class Credential(BaseModel):
+    """Database model for credentials."""
+
     model_config = ConfigDict(from_attributes=True)
 
-    credential_id: str
-    organization_id: str
-    name: str
-    credential_type: CredentialType
+    credential_id: str = Field(..., description="Unique identifier for the credential", examples=["cred_1234567890"])
+    organization_id: str = Field(
+        ..., description="ID of the organization that owns the credential", examples=["o_1234567890"]
+    )
+    name: str = Field(..., description="Name of the credential", examples=["Skyvern Login"])
+    credential_type: CredentialType = Field(..., description="Type of the credential. Eg password, credit card, etc.")
+    item_id: str = Field(..., description="ID of the associated credential item", examples=["item_1234567890"])
 
-    item_id: str
-
-    created_at: datetime
-    modified_at: datetime
-    deleted_at: datetime | None = None
+    created_at: datetime = Field(..., description="Timestamp when the credential was created")
+    modified_at: datetime = Field(..., description="Timestamp when the credential was last modified")
+    deleted_at: datetime | None = Field(None, description="Timestamp when the credential was deleted, if applicable")