feat: passkeys, myaccount with dpop support

README.md

@@ -177,7 +177,78 @@ The SDK handles per-domain OIDC discovery, JWKS fetching, issuer validation, and
 
 For more details and examples, see [examples/MultipleCustomDomains.md](examples/MultipleCustomDomains.md).
 
-### 6. Session Expiry from the Upstream IdP
+### 6. Passkey Authentication
+
+Sign users up or in with [WebAuthn](https://www.w3.org/TR/webauthn-2/) passkeys (Touch ID, Face ID, Windows Hello, or a security key) instead of a password. The ceremony is two steps — request a challenge, sign it in the browser, then complete sign-in — and establishes a server-side session like every other login path:
+
+```python
+from auth0_server_python.auth_types import PasskeyUserProfile, PasskeyAuthResponse
+
+# Step 1 — request a challenge
+challenge = await auth0.passkey_login_challenge(
+    store_options={"request": request, "response": response}
+)
+
+# Step 2 — browser signs: navigator.credentials.get(challenge.authn_params_public_key)
+
+# Step 3 — complete sign-in and establish the session
+result = await auth0.signin_with_passkey(
+    auth_session=challenge.auth_session,
+    authn_response=PasskeyAuthResponse(**credential),
+    store_options={"request": request, "response": response}
+)
+
+user = result.state_data["user"]
+```
+
+For signup, organizations, step-up MFA, and error handling, see [examples/Passkeys.md](examples/Passkeys.md).
+
+### 7. My Account API — Authentication Methods
+
+Let a logged-in user manage their own enrolled authentication methods — enroll a new passkey (or other factor), list, rename, and delete — via the [My Account API](https://auth0.com/docs/manage-users/my-account-api):
+
+```python
+from auth0_server_python.auth_server.my_account_client import MyAccountClient
+from auth0_server_python.auth_types import EnrollAuthenticationMethodRequest
+
+# Obtain a My Account-scoped token for the current session (MRRT)
+access_token = await auth0.get_access_token(
+    store_options={"request": request, "response": response},
+    audience=f"https://{YOUR_CUSTOM_DOMAIN}/me/",
+    scope="create:me:authentication-methods read:me:authentication-methods",
+)
+
+my_account = MyAccountClient(domain=YOUR_CUSTOM_DOMAIN)
+
+# Start enrolling a passkey (then sign it in the browser and verify)
+challenge = await my_account.enroll_authentication_method(
+    access_token=access_token,
+    request=EnrollAuthenticationMethodRequest(type="passkey"),
+)
+```
+
+For the full enroll/verify ceremony, listing, updating, deleting, and error handling, see [examples/MyAccountAuthenticationMethods.md](examples/MyAccountAuthenticationMethods.md).
+
+### 8. DPoP — Sender-Constrained Tokens
+
+Bind tokens to a key your server holds ([RFC 9449](https://www.rfc-editor.org/rfc/rfc9449)) so a stolen token alone cannot be replayed. Generate an EC P-256 key and pass it to passkey sign-in or any My Account API call:
+
+```python
+from jwcrypto import jwk
+
+dpop_key = jwk.JWK.generate(kty="EC", crv="P-256")  # you create and keep this key
+
+result = await auth0.signin_with_passkey(
+    auth_session=challenge.auth_session,
+    authn_response=authn_response,
+    dpop_key=dpop_key,
+    store_options={"request": request, "response": response}
+)
+```
+
+`dpop_key` is a Tier 0 secret you generate, keep in your secret store, and reuse for the bound token's lifetime — pass the **same** key to passkey sign-in and every My Account API call. For usage, see [examples/Passkeys.md](examples/Passkeys.md#3-dpop-bound-passkey-tokens-optional) and [examples/MyAccountAuthenticationMethods.md](examples/MyAccountAuthenticationMethods.md#dpop).
+
+### 9. Session Expiry from the Upstream IdP
 
 For enterprise connections, the upstream identity provider can cap how long a user's session lives. When the connection is configured to honor it, Auth0 includes a `session_expiry` claim in the ID token, and the SDK enforces this ceiling on every session read. Once it is reached, `get_user()` and `get_session()` return `None`, and `get_access_token()` raises an `AccessTokenError` with code `session_expired`. If the asserted ceiling is already in the past at login, `complete_interactive_login()` raises a `SessionExpiredError` instead of persisting an already-expired session.
 

examples/MyAccountAuthenticationMethods.md

@@ -0,0 +1,237 @@
+# My Account API — Authentication Methods & Factors
+
+The [My Account API](https://auth0.com/docs/manage-users/my-account-api) lets a **logged-in user manage their own account**. This guide covers the **authentication-methods** and **factors** surface: enrolling a new passkey (or other factor), and listing, reading, renaming, and deleting a user's enrolled methods.
+
+> [!NOTE]
+> This is a different My Account resource from [Connected Accounts](ConnectedAccounts.md) (Token Vault). Connected-accounts management is exposed as convenience methods on `ServerClient`; **authentication-method management is on `MyAccountClient` directly**, because each call takes a user access token you obtain yourself. The two share the same My Account setup (activation, MRRT, scopes, `MyAccountApiError`) — see [ConnectedAccounts.md → Pre-requisites](ConnectedAccounts.md#pre-requisites) for that common setup.
+
+> [!NOTE]
+> To **sign in** with a passkey (rather than manage one), see [examples/Passkeys.md](Passkeys.md). To **bind these calls to a held key**, pass an optional `dpop_key` — see [DPoP](#dpop) below.
+
+## Table of Contents
+
+- [Prerequisites](#prerequisites)
+- [Obtaining a scoped token](#obtaining-a-scoped-token)
+- [1. List factors available for enrollment](#1-list-factors-available-for-enrollment)
+- [2. Enroll an authentication method (passkey)](#2-enroll-an-authentication-method-passkey)
+- [3. List authentication methods](#3-list-authentication-methods)
+- [4. Get a single authentication method](#4-get-a-single-authentication-method)
+- [5. Update (rename) an authentication method](#5-update-rename-an-authentication-method)
+- [6. Delete an authentication method](#6-delete-an-authentication-method)
+- [DPoP](#dpop)
+- [Error Handling](#error-handling)
+
+## Prerequisites
+
+1. [Activate the My Account API](https://auth0.com/docs/manage-users/my-account-api#activate-the-my-account-api) on your tenant and enable access for your application.
+2. [Configure MRRT](https://auth0.com/docs/secure/tokens/refresh-tokens/multi-resource-refresh-token) so your refresh-token policy can mint tokens for the My Account audience (`https://{yourDomain}/me/`) with the authentication-methods scopes.
+3. Passkey enrollment additionally requires a [Custom Domain](https://auth0.com/docs/customize/custom-domains) and the native passkey feature on your tenant.
+
+The scopes for this surface (note the **hyphens**):
+
+| Operation | Scope |
+|-----------|-------|
+| List factors | `read:me:factors` |
+| List / get methods | `read:me:authentication-methods` |
+| Enroll / verify | `create:me:authentication-methods` |
+| Update | `update:me:authentication-methods` |
+| Delete | `delete:me:authentication-methods` |
+
+> [!TIP]
+> As with Connected Accounts, set the default `scope` for the My Account audience when constructing `ServerClient` to avoid a fresh token request per scope. See [ConnectedAccounts.md → A note about scopes](ConnectedAccounts.md#a-note-about-scopes).
+
+## Obtaining a scoped token
+
+`MyAccountClient` is **stateless** — it takes a correctly-scoped user access token on every call. Obtain that token from your `ServerClient` session via MRRT, then construct the client:
+
+```python
+from auth0_server_python.auth_server.my_account_client import MyAccountClient
+
+# Fresh My Account-scoped token for the current session (MRRT exchange)
+access_token = await server_client.get_access_token(
+    store_options={"request": request, "response": response},
+    audience=f"https://{YOUR_CUSTOM_DOMAIN}/me/",
+    scope="create:me:authentication-methods read:me:authentication-methods read:me:factors",
+)
+
+my_account = MyAccountClient(domain=YOUR_CUSTOM_DOMAIN)
+```
+
+## 1. List factors available for enrollment
+
+```python
+factors = await my_account.get_factors(access_token=access_token)
+for factor in factors.factors:
+    print(factor.type, factor.usage)
+```
+
+## 2. Enroll an authentication method (passkey)
+
+Enrollment is a **two-step** ceremony, mirroring sign-in: request a challenge, sign it in the browser, then verify.
+
+### Step 1 — Start enrollment
+
+```python
+from auth0_server_python.auth_types import EnrollAuthenticationMethodRequest
+
+challenge = await my_account.enroll_authentication_method(
+    access_token=access_token,
+    request=EnrollAuthenticationMethodRequest(type="passkey"),
+)
+
+# challenge.authentication_method_id  -> id of the new (unverified) method
+# challenge.auth_session              -> Tier 1 session credential (do not log)
+# challenge.authn_params_public_key   -> pass to navigator.credentials.create()
+```
+
+`EnrollAuthenticationMethodRequest.type` is a closed set: `passkey`, `email`, `phone`, `totp`, `push-notification`, `recovery-code`, `password`. For non-passkey types, supply the relevant fields (`email`, `phone_number`, `preferred_authentication_method`). An invalid type fails at construction with a clear `ValidationError`.
+
+### Step 2 — Create the credential in the browser
+
+Pass `challenge.authn_params_public_key` to `navigator.credentials.create()` and collect the resulting credential.
+
+### Step 3 — Verify enrollment
+
+```python
+from auth0_server_python.auth_types import (
+    VerifyAuthenticationMethodRequest,
+    PasskeyAuthResponse,
+)
+
+method = await my_account.verify_authentication_method(
+    access_token=access_token,
+    authentication_method_id=challenge.authentication_method_id,
+    request=VerifyAuthenticationMethodRequest(
+        auth_session=challenge.auth_session,
+        authn_response=PasskeyAuthResponse(
+            id=credential["id"],
+            raw_id=credential["rawId"],
+            type="public-key",
+            response={
+                "clientDataJSON": credential["response"]["clientDataJSON"],
+                "attestationObject": credential["response"]["attestationObject"],
+            },
+        ),
+    ),
+)
+print(f"Enrolled: {method.id} ({method.type})")
+```
+
+> [!NOTE]
+> For non-passkey types, set the matching field on `VerifyAuthenticationMethodRequest` instead of `authn_response`: `otp_code` (email/phone/totp), `recovery_code`, or `password`. A push enrollment needs only `auth_session`.
+
+## 3. List authentication methods
+
+```python
+all_methods = await my_account.list_authentication_methods(access_token=access_token)
+
+# Filter by type
+passkeys = await my_account.list_authentication_methods(
+    access_token=access_token,
+    type_filter="passkey",
+)
+for m in passkeys.authentication_methods:
+    print(m.id, m.type, m.created_at)
+```
+
+> [!NOTE]
+> `AuthenticationMethod` and `Factor` are forward-tolerant (`extra="allow"`): fields or method/factor types Auth0 adds later still deserialize. Don't switch exhaustively on `type` — handle unknown types gracefully.
+
+## 4. Get a single authentication method
+
+```python
+method = await my_account.get_authentication_method(
+    access_token=access_token,
+    authentication_method_id="passkey|abc123",
+)
+```
+
+> [!NOTE]
+> Method IDs (e.g. `passkey|abc123`) can contain characters like `|`. The SDK URL-encodes every ID it places in a path, so pass the raw ID exactly as returned — do not pre-encode it.
+
+## 5. Update (rename) an authentication method
+
+```python
+from auth0_server_python.auth_types import UpdateAuthenticationMethodRequest
+
+method = await my_account.update_authentication_method(
+    access_token=access_token,
+    authentication_method_id="passkey|abc123",
+    request=UpdateAuthenticationMethodRequest(name="My Work Laptop"),
+)
+```
+
+## 6. Delete an authentication method
+
+```python
+await my_account.delete_authentication_method(
+    access_token=access_token,
+    authentication_method_id="passkey|abc123",
+)
+# Returns None on success (HTTP 204).
+```
+
+## DPoP
+
+Every method above accepts an optional `dpop_key` to present a sender-constrained token (`Authorization: DPoP` + a per-request proof) instead of a Bearer token ([RFC 9449](https://www.rfc-editor.org/rfc/rfc9449)). Pass the **same key** the access token was bound to at sign-in:
+
+```python
+from jwcrypto import jwk
+
+dpop_key = jwk.JWK.generate(kty="EC", crv="P-256")  # the key the token was bound to
+
+methods = await my_account.list_authentication_methods(
+    access_token=access_token,
+    dpop_key=dpop_key,
+)
+```
+
+> [!WARNING]
+> The `dpop_key` private key is a **Tier 0 secret**. Keep it in your secret store (KMS/HSM), never log it (`repr()` is redacted, but `key.export_private()` is not), use **one key per user/session** (never share across principals), and use **EC P-256 only** — any other key type fails closed with a `ValueError`.
+
+## Error Handling
+
+All errors inherit from `Auth0Error`. My Account API errors are `MyAccountApiError` (RFC 7807 problem-details, carrying `status`, `detail`, and optional `validation_errors`); missing arguments raise `MissingRequiredArgumentError`; transport or non-JSON responses surface as `ApiError`.
+
+### Basic handling (recommended)
+
+```python
+from auth0_server_python.error import Auth0Error
+
+try:
+    methods = await my_account.list_authentication_methods(access_token=access_token)
+except Auth0Error as e:
+    return {"error": str(e)}
+```
+
+### Advanced handling (when actions differ by case)
+
+```python
+from auth0_server_python.error import Auth0Error, MyAccountApiError
+
+try:
+    await my_account.enroll_authentication_method(
+        access_token=access_token,
+        request=EnrollAuthenticationMethodRequest(type="passkey"),
+    )
+except MyAccountApiError as e:
+    if e.status == 401:
+        return redirect_to_login()                       # token expired
+    if e.status == 403:
+        return {"error": "Missing required scope"}       # e.g. create:me:authentication-methods
+    if e.status == 400 and e.validation_errors:
+        return {"error": "Validation failed", "details": e.validation_errors}
+    raise
+except Auth0Error as e:
+    return {"error": str(e)}
+```
+
+> [!NOTE]
+> Enrollment raises `MyAccountApiError`/`ApiError`, whereas passkey **sign-in** (`ServerClient`) raises `PasskeyError`. They are two distinct API surfaces — an auth grant versus a My Account resource — so write the `except` that matches the call you made.
+
+### Common error types
+
+- **`Auth0Error`** (base): catch for general handling
+- **`MyAccountApiError`**: My Account API errors with `status`, `detail`, optional `validation_errors`
+- **`MissingRequiredArgumentError`**: a required parameter (`access_token`, `authentication_method_id`, `request`) was not provided
+- **`ApiError`**: transport failure or a non-JSON error body