diff --git a/src/GoTrueClient.ts b/src/GoTrueClient.ts
index 00477783a..7c84d8470 100644
--- a/src/GoTrueClient.ts
+++ b/src/GoTrueClient.ts
@@ -2452,6 +2452,7 @@ export default class GoTrueClient {
             await this._notifyAllSubscribers('MFA_CHALLENGE_VERIFIED', data)
             return { data, error }
           } else if ('factorType' in params && params.factorType === 'webauthn') {
+            // Single Step enroll
             // TODO: Replace the placeholder
             const { data, error } = await _request(
               this.fetch,
@@ -2459,7 +2460,6 @@ export default class GoTrueClient {
               `${this.url}/factors/verify`,
               {
                 body: {
-                  use_multi_step: params.useMultiStep,
                   factorType: params.factorType,
                 },
                 headers: this.headers,
diff --git a/src/lib/types.ts b/src/lib/types.ts
index 4b1e9a775..72ecc302b 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -844,13 +844,17 @@ export type MFAVerifyTOTPParams = {
 // Declared as a separate type to allow for future changes
 export type MFAVerifyPhoneParams = MFAVerifyTOTPParams
 
-export type MFAVerifyWebAuthnParams = {
-  /** The type of factor being enrolled. */
-  factorType: 'webauthn'
+export type MFAVerifyWebAuthnParams =
+  | {
+      /** The type of factor being enrolled. */
+      factorType: 'webauthn'
+    }
+  | {
+      // TODO: define the type for this
+      factorId: string
 
-  /** Have the Auth client library handle the browser-authenticator interaction for you */
-  useMultiStep?: boolean
-}
+      credential: Object
+    }
 
 export type MFAEnrollParams = MFAEnrollTOTPParams | MFAEnrollPhoneParams | MFAEnrollWebAuthnParams
 
@@ -1244,3 +1248,161 @@ export type SignOut = {
    */
   scope?: 'global' | 'local' | 'others'
 }
+
+/**
+ * Available only in secure contexts.
+ *
+ * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse)
+ */
+export interface AuthenticatorAssertionResponse extends AuthenticatorResponse {
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/authenticatorData) */
+  readonly authenticatorData: ArrayBuffer
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/signature) */
+  readonly signature: ArrayBuffer
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/userHandle) */
+  readonly userHandle: ArrayBuffer | null
+}
+
+/**
+ * Available only in secure contexts.
+ *
+ * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAttestationResponse)
+ */
+export interface AuthenticatorAttestationResponse extends AuthenticatorResponse {
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAttestationResponse/attestationObject) */
+  readonly attestationObject: ArrayBuffer
+  getAuthenticatorData(): ArrayBuffer
+  getPublicKey(): ArrayBuffer | null
+  getPublicKeyAlgorithm(): COSEAlgorithmIdentifier
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAttestationResponse/getTransports) */
+  getTransports(): string[]
+}
+
+export interface AuthenticationExtensionsClientInputs {
+  appid?: string
+  credProps?: boolean
+  hmacCreateSecret?: boolean
+}
+
+export interface AuthenticationExtensionsClientOutputs {
+  appid?: boolean
+  credProps?: CredentialPropertiesOutput
+  hmacCreateSecret?: boolean
+}
+
+export interface AuthenticatorSelectionCriteria {
+  authenticatorAttachment?: AuthenticatorAttachment
+  requireResidentKey?: boolean
+  residentKey?: ResidentKeyRequirement
+  userVerification?: UserVerificationRequirement
+}
+
+/**
+ * Available only in secure contexts.
+ *
+ * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PublicKeyCredential)
+ */
+export interface PublicKeyCredential extends Credential {
+  readonly authenticatorAttachment: string | null
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/rawId) */
+  readonly rawId: ArrayBuffer
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/response) */
+  readonly response: AuthenticatorResponse
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/getClientExtensionResults) */
+  getClientExtensionResults(): AuthenticationExtensionsClientOutputs
+}
+
+export interface PublicKeyCredentialCreationOptions {
+  attestation?: AttestationConveyancePreference
+  authenticatorSelection?: AuthenticatorSelectionCriteria
+  challenge: BufferSource
+  excludeCredentials?: PublicKeyCredentialDescriptor[]
+  extensions?: AuthenticationExtensionsClientInputs
+  pubKeyCredParams: PublicKeyCredentialParameters[]
+  rp: PublicKeyCredentialRpEntity
+  timeout?: number
+  user: PublicKeyCredentialUserEntity
+}
+
+export interface PublicKeyCredentialDescriptor {
+  id: BufferSource
+  transports?: AuthenticatorTransport[]
+  type: PublicKeyCredentialType
+}
+
+export interface PublicKeyCredentialParameters {
+  alg: COSEAlgorithmIdentifier
+  type: PublicKeyCredentialType
+}
+
+export interface PublicKeyCredentialRequestOptions {
+  allowCredentials?: PublicKeyCredentialDescriptor[]
+  challenge: BufferSource
+  extensions?: AuthenticationExtensionsClientInputs
+  rpId?: string
+  timeout?: number
+  userVerification?: UserVerificationRequirement
+}
+
+export interface PublicKeyCredentialUserEntity extends PublicKeyCredentialEntity {
+  displayName: string
+  id: BufferSource
+}
+
+/**
+ * Available only in secure contexts.
+ *
+ * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorResponse)
+ */
+export interface AuthenticatorResponse {
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorResponse/clientDataJSON) */
+  readonly clientDataJSON: ArrayBuffer
+}
+
+export interface CredentialPropertiesOutput {
+  rk?: boolean
+}
+
+/**
+ * Available only in secure contexts.
+ *
+ * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Credential)
+ */
+export interface Credential {
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Credential/id) */
+  readonly id: string
+  /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Credential/type) */
+  readonly type: string
+}
+
+export interface PublicKeyCredentialRpEntity extends PublicKeyCredentialEntity {
+  id?: string
+}
+
+export interface PublicKeyCredentialEntity {
+  name: string
+}
+
+export type AttestationConveyancePreference = 'direct' | 'enterprise' | 'indirect' | 'none'
+export type AuthenticatorTransport = 'ble' | 'hybrid' | 'internal' | 'nfc' | 'usb'
+export type COSEAlgorithmIdentifier = number
+export type UserVerificationRequirement = 'discouraged' | 'preferred' | 'required'
+export type AuthenticatorAttachment = 'cross-platform' | 'platform'
+export type ResidentKeyRequirement = 'discouraged' | 'preferred' | 'required'
+export type BufferSource = ArrayBufferView | ArrayBuffer
+export type PublicKeyCredentialType = 'public-key'
+export type AlgorithmIdentifier = Algorithm | string
+export type KeyUsage =
+  | 'decrypt'
+  | 'deriveBits'
+  | 'deriveKey'
+  | 'encrypt'
+  | 'sign'
+  | 'unwrapKey'
+  | 'verify'
+  | 'wrapKey'
+export type KeyFormat = 'jwk' | 'pkcs8' | 'raw' | 'spki'
+export type KeyType = 'private' | 'public' | 'secret'
+export type HashAlgorithmIdentifier = AlgorithmIdentifier
+export type NamedCurve = string
+export type BigInteger = Uint8Array