Mercari Japan Bot

Japan's biggest marketplace, watched 24/7, delivered to your Discord in seconds.

Mercari Japan (メルカリ) is where the good stuff actually is — sealed Pokémon product, vintage archive fashion, anime prize figures, retro games, Walkmans, doujinshi, one-off grails that never make it to eBay. The problem has always been the same: the listings are in Japanese, they sell in minutes, and you're asleep when they go live.

This bot fixes that. It watches Mercari Japan continuously, and the moment something matching your search hits the site, it lands in your Discord channel — with the photo, the price in both yen and your currency, the seller, the condition, and a direct link. Tier 5 servers check for new listings every 15 seconds.

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Why people run this bot

⚡ Genuinely fast. Listings post the instant they're found. Titles arrive in Japanese and the English translation is edited into the message a moment later, so nothing ever waits on translation. On Mercari JP, a good listing is gone in minutes — seconds matter.

🇯🇵 You don't need to speak Japanese. Search in English and the bot translates your terms into Japanese for you (and shows you the translation before it saves, so you can correct it). Every listing title comes back translated into English.

💴 Prices in your currency. Every listing shows JPY alongside a live conversion. /tools rate gives you the current rate for any currency, updated automatically.

🎯 Filters that actually cut the noise. Price ranges, item condition, exclude-words, categories, buy-now vs auction only, and per-condition maximum prices — so a "near mint" copy can have a different budget than a "played" one.

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What it does

Server alerts

Set up search terms for the whole server and every member sees the listings in your chosen channel. Add a term with /addsearchterm, and that's it.

Personal alerts

Every member can create their own private alerts, delivered by DM or to their own webhook, without touching the server's terms. Your alerts follow you across every server the bot is in — and /alert servers lets you choose exactly which ones they're active for.

📸 Image search

Have a photo but not the words? Upload it and the bot finds visually similar listings on Mercari — using Mercari's own image search. Save the search and it keeps monitoring for new matches. Perfect for fashion pieces, unmarked figures, and anything where you don't know the Japanese name.

👤 Seller watch

Found a seller with impeccable taste? Watch them, and get pinged the moment they list anything new.

🏷️ Brand & search routing

Route listings to different channels automatically. Send all the Dior to #designer, all the Pokémon to #tcg, everything under ¥5,000 to #cheap-finds. Brands are detected from the listing itself, and you can browse or search the brand list in-bot.

🔔 Role pings

Ping specific roles for specific listings — by keyword, by price ceiling, or by brand. Your grail alerts wake people up; the routine stuff doesn't.

📌 Watchlist & price tracking

Save any listing with one button. The bot tracks it and tells you if the price drops or the item sells. /watch history renders an actual price-history chart. Set a price alert and get told the moment it falls below your number — by percentage or by absolute price.

⏰ Auction reminders

Mercari runs auctions too. Get reminded before one you're watching ends, so you're not losing things at 4am.

🚩 Seller flagging

Community-driven seller reputation. If a seller has been flagged by other users, you'll see the warning right on the listing before you commit.

🖥️ Web dashboard

A full browser dashboard for anything that's tedious in Discord: bulk-add and edit search terms, manage alerts, configure routing and pings, review your watchlist, and see a per-term usage report showing exactly which searches are earning their keep. One-click sign-in from Discord — no password.

🩺 It tells you when something's wrong

If your server is set up but listings aren't arriving, the bot works out why and tells you — deleted channel, missing permissions, no search terms, or terms that aren't matching anything — instead of leaving you to wonder.

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Plans

Every server starts with a free trial — no card, no commitment. Subscriptions are handled natively through Discord, so there's no external checkout and you can cancel from Discord at any time.

	Tier 1	Tier 2	Tier 3	Tier 4	Tier 5
	$4.99	$9.99	$14.99	$29.99	$39.99
Search terms	5	10	15	25	50
Check speed	5 min	1 min	1 min	30 sec	15 sec
Categories & price filters	✅	✅	✅	✅	✅
Brand routing	—	3	5	10	20
Search-term routing	—	✅	✅	✅	✅
Image searches	—	3	5	10	20
Seller watches	—	3	5	10	20
Custom check interval	—	✅	✅	✅	✅

Personal alerts, the watchlist, price tracking, auction reminders, role pings and the web dashboard aren't tier-limited — any member of an active server can use them.

Resellers and sourcing servers: Tier 5 is built for you — 50 concurrent searches at a 15-second cadence, 20 brand routes to sort inventory into channels automatically, and 20 saved image searches.

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Getting started

1. Invite the bot to your server
2. Run /setup — a guided wizard picks your channel and adds your first search term
3. That's it. Listings start arriving.

Useful next steps:

• /addsearchterm — add more terms for the server
• /createalert — a private alert just for you
• /image search — search by photo
• /alert guide — the full walkthrough
• /help — everything the bot can do

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Notes

• The bot reads Mercari Japan (mercari.jp), not Mercari US.
• Buying still goes through Mercari JP directly or a proxy service (Buyee, ZenMarket, Neokyo, FromJapan) — every alert links straight to the original listing, so paste it wherever you buy.
• Translation is automatic in both directions, with an offline fallback so alerts keep working even if the translation service is unavailable.
• Actively developed. New features are announced in your server automatically, with a button to send feedback straight to the developer.

Stop refreshing Mercari at 3am. Let the bot do it.