Capture starts immediately
The bot starts archiving the moment it's added to the group — even before the Owner pairs the account. LINE's download links expire in about 7 days, so we fetch files immediately on each webhook event.
Features
What @kepfai does for your LINE group
The bot joins your LINE group, archives every image, video, and file the moment a member shares it, and lets you retrieve them any time — by chatting with the bot. You never leave LINE.
Capture
Every file in the group, from the moment the bot joins
Images, video, audio, files
Covers every file type the LINE Messaging API delivers to a bot — JPG/PNG/HEIC images, MP4 video, M4A audio, PDF/Word/Excel/ZIP documents, and more.
Stored on Cloudflare R2
Files are written into KepFai's R2 storage automatically — independent of any individual member's device staying online.
The reliable band
Covers the range the Messaging API actually delivers to bots (image 10 MB, video/audio 200 MB). Full picture at kepfai.com/limits.
Retrieve
Get files back by chatting with the bot
Pick a date with a date picker
DM the bot anything; the bot shows you a date picker. Pick the day you need — the system pulls every file from that day.
Inline reply for small sets
If the day has only a few files, the bot sends them inline in the chat — you tap download in LINE and you're done.
LIFF gallery for big sets
If there are many files, the bot sends a LIFF gallery link instead — open it in LINE, download files one at a time, or tap "Download all" for a single zip stream.
ZIP64 — no total-byte cap
"Download all" uses ZIP64 streaming — no total-byte cap. The only bound is 500 files per zip (Workers sub-request budget).
AI assistant + fortune
A Thai-first AI assistant and a daily fortune card
Summon by name
Call it as kepfai, happy, lucky, น้องเฮง, น้องโชคดี, น้องนำโชค — or whatever name the Owner picks. The bot only replies when summoned, so it never disrupts your normal group conversation.
Thai-first
The assistant replies in DM and in groups when @-mentioned. Thai is the primary language; English is supported.
Daily fortune card
Type เฮง, ดูดวง, or ขอพร — the bot flips a daily fortune card with a reading and a lucky colour. For entertainment only.
Owner controls
The Owner can enable or disable the AI assistant per group — a per-chat kill-switch. Don't want chitchat in a specific group? Turn it off there.
Tools
Small tools that make the bot feel like your group's bot
Custom bot name per group
The Owner types ตั้งชื่อบอท <name> <gender> [particle] — the bot adopts the new name and uses the correct Thai politeness particle (ครับ/ค่ะ/นะ) in that specific group.
Group conversation .xlsx report
The Owner DMs report — the bot sends back a .xlsx summarising the group's messages and files for the requested period, with members' actual LINE display names.
Weekly fortune push, Monday morning
Per-group toggle — when enabled, the bot pushes a weekly fortune card into the group on Monday morning Asia/Bangkok time. Toggle on/off any time.
Per-chat text recording
Recording text messages is also a per-group toggle — when on, KepFai stores the group's text messages too, including links shared to Drive/Dropbox.
Privacy
The bot sees only the groups it's invited to — nothing beyond that
The bot can't see your personal chats
KepFai only sees the messages and files inside LINE groups the Owner invited it into. Your personal chats, your DMs with friends, and groups where the bot isn't a member are completely off-limits.
Owner-only retrieval by default
By default, only the account Owner can retrieve files. The Owner can opt members into retrieval — configurable per group on the LIFF account page.
PDPA consent notice in every paired group
On its first message in a new group, the bot posts a short PDPA notice telling members their files will be archived. The full policy is linked from that notice.
PDPA — KepFai helps support compliance
KepFai is a tool that helps support PDPA compliance (data residency, audit log, role-based access). It is not a legal certification — legal responsibility stays with the data controller.
Ready to use KepFai with your LINE group?
Add @kepfai as a friend on LINE and invite it into your group — the bot starts archiving immediately. Pick a plan at app.kepfai.com.