API Reference

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class Attachment: …

type: Literal["unknown", "img", "video", "audio"]

Attachment type.

One of the following:

"unknown"

"img"

"video"

"audio"

id: Optional[str]

Attachment identifier (typically an mxc:// URL). Use with /v1/assets/download to get a local file path.

duration: Optional[float]

Duration in seconds (audio/video).

file_name: Optional[str]

Original filename if available.

file_size: Optional[float]

File size in bytes if known.

is_gif: Optional[bool]

True if the attachment is a GIF.

is_sticker: Optional[bool]

True if the attachment is a sticker.

is_voice_note: Optional[bool]

True if the attachment is a voice note.

mime_type: Optional[str]

MIME type if known (e.g., ‘image/png’).

poster_img: Optional[str]

Preview image URL for video attachments (poster frame). May be temporary or local-only to this device; download promptly if durable access is needed.

size: Optional[Size]

Pixel dimensions of the attachment: width/height in px.

height: Optional[float]

width: Optional[float]

src_url: Optional[str]

Public URL or local file path to fetch the asset. May be temporary or local-only to this device; download promptly if durable access is needed.

class Error: …

code: str

Machine-readable error code

message: str

Error message

details: Optional[Details]

Additional error details for debugging

One of the following:

class DetailsValidationDetails: …

Validation error details

issues: List[DetailsValidationDetailsIssue]

List of validation issues

code: str

Validation issue code

message: str

Human-readable description of the validation issue

path: List[Union[str, float]]

Path pointing to the invalid field within the payload

One of the following:

str

float

Dict[str, Optional[object]]

Additional error context

Optional[object]

Arbitrary details payload supplied by the server

class Message: …

id: str

Message ID.

account_id: str

Beeper account ID the message belongs to.

chat_id: str

Unique identifier of the chat.

sender_id: str

Sender user ID.

sort_key: str

A unique, sortable key used to sort messages.

timestamp: datetime

Message timestamp.

formatdate-time

attachments: Optional[List[Attachment]]

Attachments included with this message, if any.

type: Literal["unknown", "img", "video", "audio"]

Attachment type.

One of the following:

"unknown"

"img"

"video"

"audio"

id: Optional[str]

Attachment identifier (typically an mxc:// URL). Use with /v1/assets/download to get a local file path.

duration: Optional[float]

Duration in seconds (audio/video).

file_name: Optional[str]

Original filename if available.

file_size: Optional[float]

File size in bytes if known.

is_gif: Optional[bool]

True if the attachment is a GIF.

is_sticker: Optional[bool]

True if the attachment is a sticker.

is_voice_note: Optional[bool]

True if the attachment is a voice note.

mime_type: Optional[str]

MIME type if known (e.g., ‘image/png’).

poster_img: Optional[str]

Preview image URL for video attachments (poster frame). May be temporary or local-only to this device; download promptly if durable access is needed.

size: Optional[Size]

Pixel dimensions of the attachment: width/height in px.

height: Optional[float]

width: Optional[float]

src_url: Optional[str]

Public URL or local file path to fetch the asset. May be temporary or local-only to this device; download promptly if durable access is needed.

is_sender: Optional[bool]

True if the authenticated user sent the message.

is_unread: Optional[bool]

True if the message is unread for the authenticated user. May be omitted.

linked_message_id: Optional[str]

ID of the message this is a reply to, if any.

reactions: Optional[List[Reaction]]

Reactions to the message, if any.

id: str

Reaction ID, typically ${participantID}${reactionKey} if multiple reactions allowed, or just participantID otherwise.

participant_id: str

User ID of the participant who reacted.

reaction_key: str

The reaction key: an emoji (😄), a network-specific key, or a shortcode like “smiling-face”.

emoji: Optional[bool]

True if the reactionKey is an emoji.

img_url: Optional[str]

URL to the reaction’s image. May be temporary or local-only to this device; download promptly if durable access is needed.

sender_name: Optional[str]

Resolved sender display name (impersonator/full name/username/participant name).

text: Optional[str]

Plain-text body if present. May include a JSON fallback with text entities for rich messages.

type: Optional[Literal["TEXT", "NOTICE", "IMAGE", 7 more]]

Message content type. Useful for distinguishing reactions, media messages, and state events from regular text messages.

One of the following:

"TEXT"

"NOTICE"

"IMAGE"

"VIDEO"

"VOICE"

"AUDIO"

"FILE"

"STICKER"

"LOCATION"

"REACTION"

class Reaction: …

id: str

Reaction ID, typically ${participantID}${reactionKey} if multiple reactions allowed, or just participantID otherwise.

participant_id: str

User ID of the participant who reacted.

reaction_key: str

The reaction key: an emoji (😄), a network-specific key, or a shortcode like “smiling-face”.

emoji: Optional[bool]

True if the reactionKey is an emoji.

img_url: Optional[str]

URL to the reaction’s image. May be temporary or local-only to this device; download promptly if durable access is needed.

class User: …

User the account belongs to.

id: str

Stable Beeper user ID. Use as the primary key when referencing a person.

cannot_message: Optional[bool]

True if Beeper cannot initiate messages to this user (e.g., blocked, network restriction, or no DM path). The user may still message you.

email: Optional[str]

Email address if known. Not guaranteed verified.

full_name: Optional[str]

Display name as shown in clients (e.g., ‘Alice Example’). May include emojis.

img_url: Optional[str]

Avatar image URL if available. May be temporary or local-only to this device; download promptly if durable access is needed.

is_self: Optional[bool]

True if this user represents the authenticated account’s own identity.

phone_number: Optional[str]

User’s phone number in E.164 format (e.g., ‘+14155552671’). Omit if unknown.

username: Optional[str]

Human-readable handle if available (e.g., ‘@alice’). May be network-specific and not globally unique.