🔌 Client#

The WhatsApp client is the heart of the pywa library. It is responsible for managing communication with the WhatsApp Business API.

Its three main responsibilities are:

Sending messages — text, media, location, contacts, etc.
Listening — handling incoming messages, events, and statuses.
Managing resources — templates, flows, profiles, and other business-related settings.

Tip

Pywa provides two types of clients:

Synchronous (pywa)
Asynchronous (pywa_async)

Choose the one that best fits your application’s needs.

from pywa import WhatsApp, types
wa = WhatsApp(...)

@wa.on_message
def on_message(_: WhatsApp, msg: types.Message):
    msg.reply("Hello!")

from pywa_async import WhatsApp, types
wa = WhatsApp(...)

@wa.on_message
async def on_message(_: WhatsApp, msg: types.Message):
    await msg.reply("Hello!")

For optimal type checking, ensure that all your imports come from the same package—either pywa or pywa_async.

class pywa.client.WhatsApp#

__init__(phone_id=None, token=None, *, session=None, server=<object object>, webhook_endpoint='/', verify_token=None, filter_updates=True, continue_handling=False, skip_duplicate_updates=True, validate_updates=True, waba_id=None, business_portfolio_id=None, callback_url=None, callback_url_scope=CallbackURLScope.APP, webhook_fields=None, app_id=None, app_secret=None, webhook_challenge_delay=3, business_private_key=None, business_private_key_password=None, flows_request_decryptor=<function default_flow_request_decryptor>, flows_response_encryptor=<function default_flow_response_encryptor>, api_version=Version.GRAPH_API, handlers_modules=None, user_identifier_priority=(UserIdentifier.BSUID, UserIdentifier.WA_ID, UserIdentifier.PARENT_BSUID), business_account_id=None)#

The WhatsApp client.

Full documentation on pywa.readthedocs.io.

Example without webhook:

>>> from pywa import WhatsApp
>>> wa = WhatsApp(phone_id="1234567890",token="EAADKQl9oJxx")
>>> wa.send_message(to="1234567890", text="Hello from PyWa!")

Example with webhook (using FastAPI):

>>> from pywa import WhatsApp, types, filters
>>> from fastapi import FastAPI
>>> fastapi_app = FastAPI()

>>> wa = WhatsApp(
...     phone_id="1234567890",
...     token="EAADKQl9oJxx",
...     server=fastapi_app,
...     callback_url='https://pywa.ngrok.io',
...     verify_token="XYZ123",
...     app_id=1234567890,
...     app_secret="my_app_secret",
... )

>>> @wa.on_message(filters.text)
... def new_message(_: WhatsApp, msg: types.Message):
...     msg.reply("Hello from PyWa!")

$ fastapi dev wa.py see uvicorn docs for more options (port, host, etc.)

Parameters:

phone_id (str | int | None) – The Phone Number ID to send messages from. If you manage multiple WhatsApp bots (e.g. Solution Partners or Tech Providers), you may override the phone ID per request when sending messages or calling API methods.
token (str) – The system or business access token used for the WhatsApp Cloud API.
api_version (str | int | float | Literal[Version.GRAPH_API]) – The Graph API version to use (default: the latest version supported by pywa).
session (Client | None) – The session used for API requests (default: a new httpx.Client()). Use a custom session to configure proxies, timeouts, etc. Do not share the same session across multiple WhatsApp clients.
server (Flask | FastAPI | None) –
A Flask or FastAPI app instance used for the webhook. Required to automatically handle incoming updates; pass None to manually insert updates using webhook_update_handler().
callback_url (str | None) – The public server URL to register as a webhook, without the endpoint (optional).
callback_url_scope (CallbackURLScope) – The scope used when registering the callback URL (default: APP). See Webhook overrides for more information.
verify_token (str | None) – A challenge string used to verify the webhook endpoint. Required when server is provided; can be any string and must match the value sent during verification.
webhook_challenge_delay (int) – Delay in seconds to wait for the webhook verification challenge (default: 3); useful when the server or network is slow to start.
webhook_fields (WebhookFields | Iterable[str] | None) – The webhook fields to register for the callback URL (optional). If not provided, all supported fields are registered; specify this to reduce unnecessary webhook traffic.
app_id (int | str | None) – The app ID from the App Basic Settings (optional; required when registering a callback_url with APP scope).
app_secret (str | None) –
The app secret from the App Basic Settings (optional; recommended for validating updates and required when registering a callback_url with APP scope).
webhook_endpoint (str) – The endpoint path used to receive incoming webhook requests (default: /); change this to avoid conflicts if the server is used for other purposes.
filter_updates (bool) – Whether to filter out updates that do not belong to this phone_id or waba_id (default: True; does not apply to raw updates).
waba_id (str | int | None) – The WhatsApp Business Account ID that owns the phone number (optional; required for some API methods).
business_portfolio_id (str | int | None) – The Business Portfolio ID that owns the assets. Also known as Business ID or Busines Manager ID (optional; required for some API methods).
business_private_key (str | None) – The global private key used by the flows_request_decryptor to decrypt incoming Flows requests.
business_private_key_password (str | None) – The password for the global private key, if required by the flows_request_decryptor.
flows_request_decryptor (Callable[[str, str, str, str, str | None], tuple[dict, bytes, bytes]] | None) – The global Flows request decryptor implementation used to decrypt incoming Flows requests.
flows_response_encryptor (Callable[[dict, bytes, bytes], str] | None) – The global Flows response encryptor implementation used to encrypt outgoing Flows responses.
continue_handling (bool) – Whether to continue handling updates after a handler or listener has been matched (default: False).
skip_duplicate_updates (bool) – Whether to skip duplicate updates (default: True).
validate_updates (bool) – Whether to validate incoming update payloads (default: True; requires app_secret).
handlers_modules (Iterable[ModuleType] | None) – Python modules from which handlers should be automatically loaded.
user_identifier_priority (tuple[UserIdentifier, ...]) – The priority order of user identifiers to use when replying to messages, blocking users, etc (default: bsuid > wa_id > parent_bsuid)
business_account_id (None) – Deprecated alias for waba_id (the WhatsApp Business Account ID that owns the phone number).

Sending Messages#

The client allows you to send a wide variety of messages:

Method	Description
`send_message()`	Send a text message
`send_image()`	Send an image
`send_video()`	Send a video
`send_audio()`	Send an audio file
`send_voice()`	Send a voice message
`send_document()`	Send a document
`send_location()`	Share a location
`request_location()`	Request location from a user
`send_contact()`	Send one or multiple contacts
`send_sticker()`	Send a sticker
`send_template()`	Send a template message
`send_catalog()`	Send a product catalog
`send_product()`	Send a single product
`send_products()`	Send multiple products
`send_reaction()`	React to a message
`remove_reaction()`	Remove a reaction
`mark_message_as_read()`	Mark a message as read
`indicate_typing()`	Indicate typing status to the user

Handling Updates#

Method	Description
`on_message()`	Handle incoming messages
`on_callback_button()`	Handle callback button clicks
`on_callback_selection()`	Handle list or menu selections
`on_message_status()`	Track message delivery, read, and failure statuses
`on_flow_request()`	Handle incoming flow requests
`on_flow_completion()`	Handle flow completions
`on_phone_number_change()`	Handle phone number changes
`on_identity_change()`	Handle identity changes
`on_call_connect()`	Handle incoming/outgoing call connections
`on_call_terminate()`	Handle call terminations
`on_call_status()`	Handle call status updates
`on_call_permission_update()`	Handle call permission updates
`on_user_marketing_preferences()`	Handle user marketing preferences updates
`on_template_status_update()`	Handle template status updates
`on_template_category_update()`	Handle template category changes
`on_template_quality_update()`	Handle template quality changes
`on_template_components_update()`	Handle template components updates
`on_raw_update()`	Handle raw updates from WhatsApp
`add_handlers()`	Dynamically add handlers programmatically
`remove_handlers()`	Remove handlers programmatically
`remove_callbacks()`	Remove handlers by callbacks
`add_flow_request_handler()`	Add flow request handlers programmatically
`load_handlers_modules()`	Load handlers from external modules

Listening#

You can listen for updates from specific users:

Method	Description
`listen()`	Listen to a specific user update
`stop_listening()`	Stop listening

Media#

Manage media with ease:

Method	Description
`upload_media()`	Upload media to WhatsApp servers
`download_media()`	Download media
`stream_media()`	Stream media
`get_media_bytes()`	Get media as bytes
`get_media_url()`	Get direct media URL
`delete_media()`	Delete media from WhatsApp servers

Templates#

Create, update, and manage message templates:

Method	Description
`create_template()`	Create a new template
`upsert_authentication_template()`	Bulk create or update authentication templates
`get_templates()`	Retrieve all templates
`get_template()`	Get details of a specific template
`update_template()`	Update an existing template
`delete_template()`	Delete a template
`unpause_template()`	Unpause a previously paused template
`compare_templates()`	Compare two templates
`migrate_templates()`	Migrate templates between WABAs

Flows#

Programmatically manage flows:

Method	Description
`create_flow()`	Create a flow
`update_flow_metadata()`	Update flow metadata (name, categories, endpoint, etc.)
`update_flow_json()`	Update flow JSON definition
`publish_flow()`	Publish a flow
`delete_flow()`	Delete a flow
`deprecate_flow()`	Deprecate a flow
`get_flow()`	Get details of a flow
`get_flows()`	List all flows
`get_flow_metrics()`	Get flow performance metrics
`get_flow_assets()`	Get flow assets
`migrate_flows()`	Migrate flows between WABAs

Business#

Manage business account and profile:

Method	Description
`get_business_account()`	Get business account details
`get_business_profile()`	Get business profile
`get_business_phone_numbers()`	Get all business phone numbers
`get_business_phone_number()`	Get a specific business phone number
`update_business_profile()`	Update profile details (name, description, picture, etc.)
`update_display_name()`	Update phone number display name
`update_conversational_automation()`	Update commands and ice breakers
`set_business_public_key()`	Upload business public key
`get_business_phone_number_settings()`	Get phone number settings
`update_business_phone_number_settings()`	Update phone number settings

Managing Users#

Method	Description
`block_users()`	Block users
`unblock_users()`	Unblock users
`get_blocked_users()`	Retrieve blocked users

QR Codes#

Method	Description
`create_qr_code()`	Create a QR code
`get_qr_code()`	Get details of a QR code
`get_qr_codes()`	List all QR codes
`update_qr_code()`	Update a QR code
`delete_qr_code()`	Delete a QR code

Commerce#

Method	Description
`get_commerce_settings()`	Get commerce settings
`update_commerce_settings()`	Update commerce settings

Calls#

Method	Description
`get_call_permissions()`	Get call permissions
`pre_accept_call()`	Pre-accept a call
`accept_call()`	Accept a call
`reject_call()`	Reject a call
`terminate_call()`	Terminate a call

Groups#

Method	Description
`create_group()`	Create a group
`get_group()`	Get details of a group
`get_groups()`	List all groups
`delete_group()`	Delete a group
`get_group_join_requests()`	Get pending group join requests
`approve_group_join_request()`	Approve a group join request
`reject_group_join_requests()`	Reject a group join request
`update_group_settings()`	Update group details (name, description, picture, etc.)
`remove_group_participants()`	Remove participants from a group
`get_group_invite_link()`	Get group invite link
`reset_group_invite_link()`	Reset group invite link
`pin_message()`	Pin a message in a group
`unpin_message()`	Unpin a message in a group

Server#

Integrate with webhook events manually:

Method	Description
`webhook_update_handler()`	Handle webhook updates manually
`webhook_challenge_handler()`	Handle webhook challenge manually
`get_flow_request_handler()`	Retrieve flow request handler

Partner tools#

Method	Description
`create_phone_number()`	Create a phone number on a WhatsApp Business Account.
`request_verification_code()`	Request a verification code for a phone number.
`verify_phone_number()`	Verify a phone number with a verification code.
`register_phone_number()`	Register a new phone number
`deregister_phone_number()`	Deregister a phone number
`get_shared_business_accounts()`	Get shared business accounts
`get_owned_business_account()`	Get owned business account
`override_waba_callback_url()`	Override WABA callback URL
`delete_waba_callback_url()`	Delete WABA callback URL
`override_phone_callback_url()`	Override phone callback URL
`delete_phone_callback_url()`	Delete phone callback URL

Others#

Method	Description
`get_app_access_token()`	Retrieve app access token
`set_app_callback_url()`	Set app callback URL

🔌 Client

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