Beeper App API

Top-level actions: focus the app window, jump to a chat, or run unified search across chats and messages.

OpenAPI Specification

beeper-app-api-openapi.yml Raw ↑
openapi: 3.1.0
info:
  title: Beeper Desktop Accounts App API
  version: 5.0.0
  description: 'Beeper Desktop''s local HTTP and WebSocket API. One auth flow and one chat shape work across WhatsApp, iMessage, Telegram, Slack, Matrix, Discord, Twitter/X, Signal, and more.


    Beeper is built on the Matrix standard. Identifiers and rich text use Matrix conventions: `mxc://` and `localmxc://` URLs reference media on the Matrix homeserver and on this device''s local bridge respectively; message text is Matrix HTML on the wire; `@room` is a group-mention sentinel.


    ## Quickstart

    1. Discover the server with `GET /v1/info`. The Desktop API is local-only unless the user has enabled remote access.

    2. Authenticate with an access token from Beeper Desktop, or run OAuth2 Authorization Code with PKCE under the OAuth tag.

    3. Call `GET /v1/accounts` to see connected Chat Accounts, then `GET /v1/chats` for the unified inbox.


    ## WebSocket

    Connect to `/v1/ws` with the same Bearer token in the upgrade request. Browser `new WebSocket()` clients are not supported yet because browsers cannot set the Authorization header. After the server sends `ready`, send `{"type":"subscriptions.set","chatIDs":["*"]}` to receive every chat update, or pass specific chat IDs. The server replies with `subscriptions.updated`, then streams `chat.upserted`, `chat.deleted`, `message.upserted`, and `message.deleted`.


    Delivery is at-most-once. There is no replay on reconnect, and `seq` is per connection. Refetch via HTTP after a disconnect to reconcile drift. Initial subscription state is empty; `subscriptions.set` replaces previous state; `["*"]` cannot be combined with specific chat IDs.


    ## Conventions

    - IDs and cursors are opaque strings.

    - Timestamps are ISO 8601 with timezone, except OAuth fields that use Unix seconds per RFC.

    - Pagination is `cursor` plus `direction=before|after`.

    - Sends return a `pendingMessageID`; resolve it with `GET /v1/chats/{chatID}/messages/{messageID}` or wait for `message.upserted` over the WebSocket.

    - Optional fields may be omitted when unknown. Nullable write fields use `null` as an explicit clear operation.

    - Every response carries `X-Beeper-Desktop-Version` so clients can tell which app version produced it.'
  termsOfService: https://www.beeper.com/terms
  contact:
    name: Beeper
    email: help@beeper.com
    url: https://www.beeper.com
  license:
    name: Proprietary
    url: https://www.beeper.com/terms
servers:
- url: http://localhost:23373
  description: Beeper Desktop API server
security:
- bearerAuth: []
tags:
- name: App
  description: 'Top-level actions: focus the app window, jump to a chat, or run unified search across chats and messages.'
paths:
  /v1/search:
    get:
      summary: Search
      description: Returns matching chats, participant name matches in groups, and the first page of messages in one call. Paginate messages via search-messages. Paginate chats via search-chats.
      tags:
      - App
      operationId: search
      security:
      - bearerAuth: []
      parameters:
      - schema:
          type: string
          minLength: 1
          description: User-typed search text. Literal word matching (non-semantic).
        required: true
        description: User-typed search text. Literal word matching (non-semantic).
        name: query
        in: query
      responses:
        '200':
          description: Request executed successfully
          headers:
            X-Beeper-Desktop-Version:
              $ref: '#/components/headers/X-Beeper-Desktop-Version'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UnifiedSearchOutput'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '403':
          $ref: '#/components/responses/ForbiddenError'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
        '429':
          $ref: '#/components/responses/TooManyRequests'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /v1/focus:
    post:
      summary: Focus Beeper Desktop app
      description: Focus Beeper Desktop and optionally navigate to a specific chat, message, or pre-fill plain text and an image path.
      tags:
      - App
      operationId: focusApp
      security:
      - bearerAuth: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FocusAppInput'
      responses:
        '200':
          description: Request executed successfully
          headers:
            X-Beeper-Desktop-Version:
              $ref: '#/components/headers/X-Beeper-Desktop-Version'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FocusAppOutput'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '403':
          $ref: '#/components/responses/ForbiddenError'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
        '429':
          $ref: '#/components/responses/TooManyRequests'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  schemas:
    Message:
      type: object
      properties:
        id:
          type: string
          description: Message ID.
          example: '1343993'
        chatID:
          type: string
          description: Chat ID. Input routes also accept the local chat ID from this Beeper Desktop installation when available.
          example: '!NCdzlIaMjZUmvmvyHU:beeper.com'
        accountID:
          type: string
          description: Beeper account ID the message belongs to.
        senderID:
          type: string
          description: Matrix-style fully-qualified sender user ID, usually including a bridge prefix and homeserver.
          example: '@kishanbagaria:local-whatsapp.localhost'
        senderName:
          type: string
          description: Resolved sender display name (impersonator/full name/username/participant name).
        timestamp:
          type: string
          format: date-time
          description: Message timestamp.
          example: '2025-08-31T23:30:12.520Z'
        sortKey:
          type: string
          description: A unique, sortable key used to sort messages.
          example: '821744079'
        type:
          type: string
          enum:
          - TEXT
          - NOTICE
          - IMAGE
          - VIDEO
          - VOICE
          - AUDIO
          - FILE
          - STICKER
          - LOCATION
          - REACTION
          description: Message content type. Useful for distinguishing reactions, media messages, and state events from regular text messages.
        text:
          type: string
          description: Matrix HTML body if present.
        editedTimestamp:
          type: string
          format: date-time
          description: Timestamp when the message was edited, if known.
          example: '2025-08-31T23:30:12.520Z'
        isSender:
          type: boolean
          description: True if the authenticated user sent the message.
        sendStatus:
          $ref: '#/components/schemas/SendStatus'
        isHidden:
          type: boolean
          description: True if the message is hidden from normal display.
        isDeleted:
          type: boolean
          description: True if the message has been deleted.
        attachments:
          type: array
          items:
            $ref: '#/components/schemas/Attachment'
          description: Attachments included with this message, if any.
        isUnread:
          type: boolean
          description: True if the message is unread for the authenticated user. May be omitted.
        linkedMessageID:
          type: string
          description: ID of the message this is a reply to, if any.
          example: '1343993'
        mentions:
          type: array
          nullable: true
          items:
            type: string
          description: Mentioned user IDs, @room, or null for legacy messages that require text scanning.
        links:
          type: array
          items:
            $ref: '#/components/schemas/LinkPreview'
          description: Link previews included with this message, if any.
        reactions:
          type: array
          items:
            $ref: '#/components/schemas/Reaction'
          description: Reactions to the message, if any.
        seen:
          $ref: '#/components/schemas/MessageSeen'
      required:
      - id
      - chatID
      - accountID
      - senderID
      - timestamp
      - sortKey
      example:
        id: '241392'
        sortKey: '455171049984'
        chatID: '!discord_109876543210987654:beeper.com'
        accountID: discordgo
        senderID: '@discord_221590782384013314:beeper.com'
        senderName: Kishan Bagaria
        timestamp: '2026-05-05T20:20:12.497Z'
        type: TEXT
        text: The OAuth fix is deployed. Can you verify the desktop flow?
        isSender: false
        isDeleted: false
        mentions:
        - '@discord_337451892017545216:beeper.com'
        isUnread: false
    User:
      type: object
      properties:
        id:
          type: string
          description: Stable Beeper user ID. Use as the primary key when referencing a person.
        username:
          type: string
          description: Human-readable handle if available (e.g., '@alice'). May be network-specific and not globally unique.
        phoneNumber:
          type: string
          description: User's phone number in E.164 format (e.g., '+14155552671'). Omit if unknown.
        email:
          type: string
          description: Email address if known. Not guaranteed verified.
        fullName:
          type: string
          description: Display name as shown in clients (e.g., 'Alice Example'). May include emojis.
        imgURL:
          type: string
          description: Avatar image URL if available. This may be a remote URL, Matrix media URL, data URL, or local filesystem URL depending on source and endpoint. May be temporary or local-only to this device; download promptly if durable access is needed.
        cannotMessage:
          type: boolean
          description: True if Beeper cannot initiate messages to this user (e.g., blocked, network restriction, or no DM path). The user may still message you.
        isSelf:
          type: boolean
          description: True if this user represents the authenticated account's own identity.
      required:
      - id
      description: User the account belongs to.
    LinkPreview:
      type: object
      properties:
        url:
          type: string
          description: Resolved link URL.
        originalURL:
          type: string
          description: Original URL when the displayed URL is shortened or redirected.
        favicon:
          type: string
          description: Favicon URL if available. May be temporary or local-only to this device; download promptly if durable access is needed.
        img:
          type: string
          description: Preview image URL if available. May be temporary or local-only to this device; download promptly if durable access is needed.
        imgSize:
          type: object
          properties:
            width:
              type: number
            height:
              type: number
          description: Preview image dimensions.
        title:
          type: string
          description: Link preview title.
        summary:
          type: string
          description: Link preview summary.
      required:
      - url
      - title
      description: Link preview included with a message.
    AttachmentCapabilities:
      type: object
      properties:
        mimeTypes:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/CapabilitySupportLevel'
          description: Supported MIME types or MIME patterns for this file message type. Missing MIME types should be treated as rejected.
        caption:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        maxCaptionLength:
          type: integer
          description: Maximum caption length when captions are supported.
        maxSize:
          type: integer
          description: Maximum file size in bytes.
        maxWidth:
          type: integer
          description: Maximum image or video width in pixels.
        maxHeight:
          type: integer
          description: Maximum image or video height in pixels.
        maxDuration:
          type: integer
          description: Maximum audio or video duration in seconds.
        viewOnce:
          type: boolean
          description: True if this file type can be sent as view-once media.
      required:
      - mimeTypes
      description: Capabilities for one attachment message type.
    Chat:
      type: object
      properties:
        id:
          type: string
          description: Unique identifier of the chat across Beeper.
          example: '!NCdzlIaMjZUmvmvyHU:beeper.com'
        localChatID:
          type: string
          nullable: true
          description: Local chat ID specific to this Beeper Desktop installation.
        accountID:
          type: string
          description: Account ID this chat belongs to.
        network:
          type: string
          description: Display-only human-readable account/network name.
        title:
          type: string
          description: Display title of the chat as computed by the client/server.
        description:
          type: string
          nullable: true
          description: Group chat description/topic when available.
        imgURL:
          type: string
          nullable: true
          description: Local filesystem path to the chat avatar image when available.
        type:
          type: string
          enum:
          - single
          - group
          description: 'Chat type: ''single'' for direct messages, ''group'' for group chats.'
        isReadOnly:
          type: boolean
          description: True if messages cannot be sent in this chat.
        participants:
          type: object
          properties:
            items:
              type: array
              items:
                $ref: '#/components/schemas/Participant'
              description: Participants returned for this chat (limited by the request; may be a subset).
            hasMore:
              type: boolean
              description: True if there are more participants than included in items.
            total:
              type: integer
              description: Total number of participants in the chat.
          required:
          - items
          - hasMore
          - total
          description: Chat participants information.
        lastActivity:
          type: string
          format: date-time
          description: Timestamp of last activity.
          example: '2025-08-31T23:30:12.520Z'
        unreadCount:
          type: integer
          description: Number of unread messages.
          example: 3
        unreadMentionsCount:
          type: integer
          description: Number of unread messages that mention the authenticated user or @room.
        lastReadMessageSortKey:
          type: string
          description: Last read message sortKey.
        draft:
          $ref: '#/components/schemas/ChatDraft'
        reminder:
          type: object
          nullable: true
          properties:
            remindAt:
              type: string
              format: date-time
              description: Timestamp when the reminder should trigger.
              example: '2025-08-31T23:30:12.520Z'
            dismissOnIncomingMessage:
              type: boolean
              description: Cancel reminder if someone messages in the chat.
          description: Current reminder for this chat, or null when no reminder is set.
        snooze:
          type: object
          nullable: true
          properties:
            snoozeUntil:
              type: string
              format: date-time
              description: Timestamp when the snooze expires.
              example: '2025-08-31T23:30:12.520Z'
            userSnoozedAt:
              type: string
              format: date-time
              description: Timestamp when the user set the snooze.
              example: '2025-08-31T23:30:12.520Z'
          description: Current snooze state for this chat, or null when no snooze is set.
        isArchived:
          type: boolean
          description: True if chat is archived.
        isMarkedUnread:
          type: boolean
          description: True if the chat was explicitly marked unread by the authenticated user.
        isMuted:
          type: boolean
          description: True if chat notifications are muted.
        isPinned:
          type: boolean
          description: True if chat is pinned.
        isLowPriority:
          type: boolean
          description: True if chat is marked low priority.
        messageExpirySeconds:
          type: integer
          nullable: true
          description: Disappearing-message timer in seconds when available.
        capabilities:
          $ref: '#/components/schemas/ChatCapabilities'
      required:
      - id
      - accountID
      - network
      - title
      - type
      - participants
      - unreadCount
      example:
        id: '!whatsapp_15550101002:ba_EvYDBBsZbRQAy3UOSWqG0LuTVkc.local-whatsapp.localhost'
        localChatID: '5639'
        accountID: local-whatsapp_ba_EvYDBBsZbRQAy3UOSWqG0LuTVkc
        network: WhatsApp
        title: Kishan Bagaria
        type: single
        participants:
          items:
          - id: '@15550101002:local-whatsapp.localhost'
            phoneNumber: '+15550101002'
            fullName: Kishan Bagaria
            cannotMessage: false
            isSelf: false
          - id: '@ba_EvYDBBsZbRQAy3UOSWqG0LuTVkc:local-whatsapp.localhost'
            fullName: Batuhan İçöz
            cannotMessage: false
            isSelf: true
          hasMore: false
          total: 2
        lastActivity: '2026-05-05T20:11:54.000Z'
        unreadCount: 0
        lastReadMessageSortKey: '455171049984'
        draft: null
        isArchived: false
        isMuted: false
        isPinned: false
    Error:
      type: object
      properties:
        message:
          type: string
          description: Error message
        code:
          type: string
          description: Machine-readable error code
        details:
          anyOf:
          - type: object
            properties:
              issues:
                type: array
                items:
                  type: object
                  properties:
                    code:
                      type: string
                      description: Validation issue code
                      example: invalid_type
                    message:
                      type: string
                      description: Human-readable description of the validation issue
                    path:
                      type: array
                      items:
                        anyOf:
                        - type: string
                          x-stainless-variantName: field
                        - type: number
                          x-stainless-variantName: index
                      description: Path pointing to the invalid field within the payload
                      example:
                      - body
                      - chatID
                  required:
                  - code
                  - message
                  - path
                description: List of validation issues
            required:
            - issues
            description: Validation error details
            x-stainless-variantName: validation_details
          - type: object
            additionalProperties:
              nullable: true
              x-stainless-any: true
            description: Additional error context
            x-stainless-variantName: context
          - nullable: true
            description: Arbitrary details payload supplied by the server
            x-stainless-any: true
            x-stainless-variantName: arbitrary
          - nullable: true
          description: Additional error details for debugging
      required:
      - message
      - code
    ChatStateCapabilities:
      type: object
      properties:
        disappearingTimer:
          type: object
          properties:
            level:
              $ref: '#/components/schemas/CapabilitySupportLevel'
          required:
          - level
          description: Disappearing-message timer state capability.
        avatar:
          type: object
          properties:
            level:
              $ref: '#/components/schemas/CapabilitySupportLevel'
          required:
          - level
          description: Chat avatar state capability.
        title:
          type: object
          properties:
            level:
              $ref: '#/components/schemas/CapabilitySupportLevel'
          required:
          - level
          description: Chat title state capability.
        description:
          type: object
          properties:
            level:
              $ref: '#/components/schemas/CapabilitySupportLevel'
          required:
          - level
          description: Chat description/topic state capability.
      description: Chat state update capabilities.
    MessageSeen:
      anyOf:
      - type: boolean
        x-stainless-variantName: boolean
      - type: string
        format: date-time
        description: ISO 8601 timestamp.
        example: '2025-08-31T23:30:12.520Z'
        x-stainless-variantName: timestamp
      - $ref: '#/components/schemas/MessageSeenByParticipant'
      description: Read receipt state for this message, when available.
    MessageSeenByParticipant:
      type: object
      additionalProperties:
        anyOf:
        - type: boolean
          x-stainless-variantName: boolean
        - type: string
          format: date-time
          description: ISO 8601 timestamp.
          example: '2025-08-31T23:30:12.520Z'
          x-stainless-variantName: timestamp
      description: Group read receipt state keyed by participant ID.
      x-stainless-variantName: by_participant
    FocusAppOutput:
      type: object
      properties:
        success:
          type: boolean
          description: Whether the app was successfully opened/focused.
      required:
      - success
      description: Response indicating successful app focus action.
    SendStatus:
      type: object
      properties:
        reason:
          type: string
          description: Machine-readable failure reason. Present when the send status is a failure.
        message:
          type: string
          description: Human-readable send status or failure message.
        status:
          type: string
          enum:
          - SUCCESS
          - PENDING
          - FAIL_RETRIABLE
          - FAIL_PERMANENT
          description: Current status of the message send attempt.
        timestamp:
          type: string
          format: date-time
          description: Timestamp for the send status event.
          example: '2025-08-31T23:30:12.520Z'
        deliveredToUsers:
          type: array
          items:
            type: string
          description: User IDs the message was delivered to, when reported by the network.
        internalError:
          type: string
          description: Internal bridge error detail. Intended for diagnostics, not end-user display.
      required:
      - status
      - timestamp
      description: Message send status for this message, when reported by the bridge.
    ChatCapabilities:
      type: object
      properties:
        formatting:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/CapabilitySupportLevel'
          description: Supported rich-text formatting features keyed by feature name (for example bold, inline_code, code_block.syntax_highlighting). Omitted means no formatting support is advertised.
        attachments:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/AttachmentCapabilities'
          description: Supported attachment message types and their per-type constraints, keyed by Matrix msgtype or pseudo-msgtype (for example m.image, m.video, org.matrix.msc3245.voice). Missing message types should be treated as rejected.
        maxTextLength:
          type: integer
          description: Maximum length of normal text messages.
        locationMessage:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        poll:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        thread:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        reply:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        edit:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        editMaxCount:
          type: integer
          description: Maximum number of edits allowed for one message.
        editMaxAge:
          type: integer
          description: Maximum message age for edits, in seconds.
        delete:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        deleteMaxAge:
          type: integer
          description: Maximum message age for delete-for-everyone, in seconds.
        deleteForMe:
          type: boolean
          description: True if deleting messages only for the authenticated user is supported.
        messageRequest:
          type: object
          properties:
            acceptWithMessage:
              $ref: '#/components/schemas/CapabilitySupportLevel'
            acceptWithButton:
              $ref: '#/components/schemas/CapabilitySupportLevel'
          description: Message request capabilities.
        reaction:
          $ref: '#/components/schemas/CapabilitySupportLevel'
        reactionCount:
          type: integer
          description: Maximum number of reactions allowed on a single message.
        allowedReactions:
          type: array
          items:
            type: string
          description: Allowed Unicode reactions. Omitted means all emoji reactions are allowed.
        customEmojiReactions:
          type: boolean
          description: True if custom emoji reactions are supported.
        disappearingTimer:
          type: object
          properties:
            types:
              type: array
              items:
                type: string
                enum:
                - afterRead
                - afterSend
              description: Supported disappearing timer types.
            timers:
              type: array
              items:
                type: integer
              description: Allowed disappearing timer values in milliseconds. Omitted means any timer is allowed.
            omitEmptyTimer:
              type: boolean
              description: True if empty timer objects should be omitted from message content.
          description: Disappearing-message timer capabilities.
        readReceipts:
          type: boolean
          description: True if read receipts are supported.
        typingNotifications:
          type: boolean
          description: True if typing notifications are supported.
        archive:
          type: boolean
          description: True if archive/unarchive is supported.
        markAsUnread:
          type: boolean
          description: True if marking chats unread is supported.
        deleteChat:
          type: boolean
          description: True if deleting chats for the authenticated user is supported.
        deleteChatForEveryone:
          type: boolean
          description: True if deleting chats for everyone is supported.
        participantActions:
          type: object
          properties:
            ban:
              $ref: '#/components/schemas/CapabilitySupportLevel'
            invite:
              $ref: '#/components/schemas/CapabilitySupportLevel'
            kick:
              $ref: '#/components/schemas/CapabilitySupportLevel'
            leave:
              $ref: '#/components/schemas/CapabilitySupportLevel'
            revokeInvite:
              $ref: '#/components/schemas/CapabilitySupportLevel'
          description: Participant management capabilities.
        state:
          $ref: '#/components/schemas/ChatStateCapabilities'
      description: Chat capabilities reported by the platform.
    DraftAttachment:
      type: object
      properties:
        id:
          type: string
          description: Draft attachment identifier.
        type:
          type: string
          enum:
          - file
          - gif
          - recorded_audio
          description: Draft attachment type. GIF and recorded audio are mutually exclusive types.
        mimeType:
          type: string
          description: MIME type if known.
        fileName:
          type: string
          description: Original filename if available.
        filePath:
          type: string
          description: Local filesystem path for the draft attachment.
        fileSize:
          type: number
          description: File size in bytes if known.
        stickerID:
          type: string
          description: Sticker identifier if the draft attachment is a sticker.
        audioDurationSeconds:
          type: number
          description: Audio duration in seconds if known.
        size:
          type: object
          properties:
            width:
              type: number
            height:
              type: number
          description: Pixel dimensions of the attachment.
      required:
      - id
      - type
    Attachment:
      type: object
      properties:
        id:
          type: string
          description: Attachment identifier (typically an mxc:// URL). Use the download file endpoint to get a local file path.
        type:
          type: string
          enum:
          - unknown
          - img
          - video
          - audio
          description: Attachment type.
        srcURL:
          type: string
          description: Public URL or local file path to fetch the file. May be temporary or local-only to this device; download promptly if durable access is needed.
        mimeType:
          type: string
          description: MIME type if known (e.g., 'image/png').
        fileName:
          type: string
          description: Original filename if available.
        fileSize:
          type: number
          description: File size in bytes if known.
        isGif:
          type: boolean
          description: True if the attachment is a GIF.
        isSticker:
          type: boolean
          description: True if the attachment is a sticker.
        isVoiceNote:
          type: boolean
          description: True if the attachment is a voice note.
        duration:
          type: number
          description: Duration in seconds (audio/video).
        transcription:
          $ref: '#/components/schemas/Transcription'
        posterImg:
          type: string
          description: 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:
          type: object
          properties:
            width:
              type: number
            height:
              type: number
          description: 'Pixel dimensions of the attachment: width/height in px.'
      required:
      - type
    SearchMessagesOutput:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Message'
          description: Messages matching the query and filters.
          x-stainless-pagination-property:
            purpose: items
        hasMore:
          type: boolean
          description: True if additional results can be fetched using the provided cursors.
          x-stainless-pagination-property:
            purpose: has_next_page
        oldestCursor:
          type: string
          nullable: true
          description: Cursor for fetching older results (use with direction='before'). Opaque string; do not i

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# Full source: https://raw.githubusercontent.com/api-evangelist/beeper/refs/heads/main/openapi/beeper-app-api-openapi.yml