LINE

LINE Messaging API Blob API

The messaging-api-blob API from LINE — 4 operation(s) for messaging-api-blob.

GitHub OpenAPI

Operations 5

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /v2/bot/message/{messageId}/content Download media a user sent · Get message content #
Ask an LLM
“How do I download the image, video or audio a user sent to my bot?”
“Can I fetch the full file behind a media message ID?”
Tell an agent
Download the content of message {messageId}.
Save the photo or video the user sent in message {messageId}.
GET /v2/bot/message/{messageId}/content/preview Get a preview image of a sent image or video · Get message content preview #
Ask an LLM
“Can I get a thumbnail preview of an image or video a user sent?”
“What returns a smaller preview instead of the full media file?”
Tell an agent
Get the preview image for message {messageId}.
Fetch a thumbnail of the video in message {messageId}.
GET /v2/bot/message/{messageId}/content/transcoding Check if a video or audio is ready to download · Get message content transcoding by message id #
Ask an LLM
“Is the video or audio a user sent ready to download yet?”
“Which status tells me transcoding of a media message is finished?”
Tell an agent
Check the transcoding status of message {messageId}.
Tell me whether audio message {messageId} is prepared for download.
GET /v2/bot/richmenu/{richMenuId}/content Download a rich menu image · Get rich menu image #
Ask an LLM
“How do I download the image attached to a rich menu?”
“Can I retrieve the background graphic of an existing rich menu?”
Tell an agent
Download the image of rich menu {richMenuId}.
Fetch the rich menu artwork for {richMenuId}.
POST /v2/bot/richmenu/{richMenuId}/content Upload a rich menu image · Set rich menu image #
Ask an LLM
“How do I upload the image for a rich menu I created?”
“What step attaches artwork to a new rich menu?”
Tell an agent
Upload an image to rich menu {richMenuId}.
Set the background image for rich menu {richMenuId}.

Documentation

📖
Documentation
https://developers.line.biz/en/docs/messaging-api/
📖
APIReference
https://developers.line.biz/en/reference/messaging-api/
📖
GettingStarted
https://developers.line.biz/en/docs/messaging-api/getting-started/
📖
Documentation
https://developers.line.biz/en/docs/messaging-api/receiving-messages/
📖
Documentation
https://developers.line.biz/en/docs/basics/channel-access-token/
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/authentication/line-authentication.yml
📖
APIReference
https://developers.line.biz/en/reference/messaging-api/#get-insight
📖
APIReference
https://developers.line.biz/en/reference/messaging-api/#manage-audience-group
📖
APIReference
https://developers.line.biz/en/reference/liff-server/
📖
Documentation
https://developers.line.biz/en/docs/liff/
📖
Documentation
https://developers.line.biz/en/docs/partner-docs/module/
📖
Documentation
https://developers.line.biz/en/docs/partner-docs/module-technical-attach-channel/
📖
Documentation
https://developers.line.biz/en/docs/partner-docs/mission-stickers/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/openapi/line-messaging-api-blob-api-openapi.yml
⚙
AsyncAPI
https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/asyncapi/line-messaging-webhook.yml

Other Resources

🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/openapi/_original/line-webhook-openapi.yml
🔗
Spectral
https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/rules/line-asyncapi-spectral-rules.yml
🔗
CLI
https://raw.githubusercontent.com/api-evangelist/line/refs/heads/main/cli/line-cli.yml

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OpenAPI Specification

line-messaging-api-blob-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: LINE Messaging Messaging API Blob API
  version: 0.0.1
  description: This document describes LINE Messaging API.
servers:
- url: https://api.line.me
security:
- Bearer: []
tags:
- name: messaging-api-blob
paths:
  /v2/bot/message/{messageId}/content:
    get:
      externalDocs:
        url: https://developers.line.biz/en/reference/messaging-api/#get-content
      servers:
      - url: https://api-data.line.me
      tags:
      - messaging-api-blob
      operationId: getMessageContent
      description: Download image, video, and audio data sent from users.
      parameters:
      - name: messageId
        in: path
        required: true
        description: Message ID of video or audio
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            '*/*':
              schema:
                description: blob response
                type: string
                format: binary
      summary: Get message content
      x-summary-source: derived
  /v2/bot/message/{messageId}/content/preview:
    get:
      externalDocs:
        url: https://developers.line.biz/en/reference/messaging-api/#get-image-or-video-preview
      servers:
      - url: https://api-data.line.me
      tags:
      - messaging-api-blob
      operationId: getMessageContentPreview
      description: Get a preview image of the image or video
      parameters:
      - name: messageId
        in: path
        required: true
        description: Message ID of image or video
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            '*/*':
              schema:
                type: string
                format: binary
                description: blob response
      summary: Get message content preview
      x-summary-source: derived
  /v2/bot/message/{messageId}/content/transcoding:
    get:
      externalDocs:
        url: https://developers.line.biz/en/reference/messaging-api/#verify-video-or-audio-preparation-status
      servers:
      - url: https://api-data.line.me
      tags:
      - messaging-api-blob
      operationId: getMessageContentTranscodingByMessageId
      description: Verify the preparation status of a video or audio for getting
      parameters:
      - name: messageId
        in: path
        required: true
        description: Message ID of video or audio
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetMessageContentTranscodingResponse'
              example:
                status: processing
      summary: Get message content transcoding by message id
      x-summary-source: derived
  /v2/bot/richmenu/{richMenuId}/content:
    get:
      externalDocs:
        url: https://developers.line.biz/en/reference/messaging-api/#download-rich-menu-image
      servers:
      - url: https://api-data.line.me
      tags:
      - messaging-api-blob
      operationId: getRichMenuImage
      description: Download rich menu image.
      parameters:
      - name: richMenuId
        in: path
        required: true
        description: ID of the rich menu with the image to be downloaded
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            '*/*':
              schema:
                type: string
                format: binary
                description: blob response
      summary: Get rich menu image
      x-summary-source: derived
    post:
      externalDocs:
        url: https://developers.line.biz/en/reference/messaging-api/#upload-rich-menu-image
      servers:
      - url: https://api-data.line.me
      tags:
      - messaging-api-blob
      operationId: setRichMenuImage
      description: Upload rich menu image
      parameters:
      - name: richMenuId
        in: path
        required: true
        description: The ID of the rich menu to attach the image to
        schema:
          type: string
      requestBody:
        required: true
        content:
          '*/*':
            schema:
              description: blob request
              type: string
              format: binary
      responses:
        '200':
          description: OK
      summary: Set rich menu image
      x-summary-source: derived
components:
  schemas:
    GetMessageContentTranscodingResponse:
      externalDocs:
        url: https://developers.line.biz/en/reference/messaging-api/#verify-video-or-audio-preparation-status
      description: Transcoding response
      required:
      - status
      type: object
      properties:
        status:
          type: string
          description: 'The preparation status. One of:


            `processing`: Preparing to get content.

            `succeeded`: Ready to get the content. You can get the content sent by users.

            `failed`: Failed to prepare to get the content.

            '
          enum:
          - processing
          - succeeded
          - failed
  securitySchemes:
    Bearer:
      type: http
      scheme: bearer
      description: Channel access token