In Claude Code, add the marketplace once and install. Updates stay in sync with the repo:
/plugin marketplace add 1789-tech/grenier
/plugin install grenier@grenier
One Claude Skill · runs your pile while you sleep · MIT
Your pile is worth money.
Dump the photos tonight — no sorting, no chat. grenier works the batch while you're gone and hands you one wake-up: what it's worth, the listings already written, and the honest list of what it couldn't call. It drafts. You publish.
curl -fsSL https://raw.githubusercontent.com/1789-tech/grenier/main/install.sh | sh
One command · open source (MIT) · draft-only — it never publishes anything without you
You sleep. It works the pile.
You don't get coached through your clutter — you hand it over. A batch of photos in the evening, and grenier runs every item through the same pipeline unattended: identify → decide → price → pick the channel → write the listing. It saves each decision as it goes, so a crash or a re-run picks up where it stopped.
Tonight, 23:41
“My cellar's a mess, stuff piled up for years, I don't know where to start. No time tonight — I'll dump the photos and you crack on.”
17 photos. No titles, no prices, no order.
You go to bed→
Tomorrow, 07:02
17 items processed. 11 listings written — title, price, description, category, channel.
Every one a draft. Nothing was posted to a marketplace, no buyer was messaged, nothing was decided for you.
You wake up · you review · you publish🌙 While you slept: 17 items processed, ~€230–310 recoverable, 11 listings ready to post, 4 to donate/recycle, 2 that need your eyes.
Ready to post draft — nothing published
Kids' bike, Decathlon 20" — Leboncoin — €65 (55–75)
TITLE: Decathlon 20-inch kids' bike, good condition
Ready to ride, light scratches on the frame, tyres fine. Collection…
Lot of 30 paperbacks — Momox (buy-back) — ~€15–25 the lot
Low unit value → bundled, not 30 listings. That's the point.
+ 9 more drafts — each with title, price, description, category, channel.
Needs your eyes (2) — flagged, not faked
Designer-looking bag, no proof of authenticity → model? receipt?
No designer price without proof — I did not list it as one.
Box of mixed electronics, photo too blurry → one sharp photo and I'll price it.
The receipt
Cash recoverable: ~€230–310 (sell items only — summed, never invented)
Effort avoided: ~4–6 h of micro-listings refused (low value → bundles/donation)
Dated exits: 2 donation bags Saturday · 1 e-waste drop · 3 local listings
Deadlines: D+3 drop price 15% · D+7 donate if no serious buyer
First move now: post the bike at €65 — the draft is already written.
Everything is saved in grenier-inventory/. Say “reprends” tomorrow and it picks up from here.
The result you can feel
The hook isn't a tidy house — it's the money already sitting in your cellar. grenier leads with the figure, then does the work you were never going to do.
~€230–310recoverable, summed from priced items — never conjured
11listings written, ready to paste
~4–6 hof micro-listing busywork it refused for you
0things published without you. By contract.
Figures from one real 17-item cellar run (France). Your pile is your pile — the point is the shape of the result, not a promise of a number. grenier reports what it actually found: items done, items needing you, fields it had to guess.
“Couldn't I just ask Claude?”
For a single, fully-described item — yes, and we'll say so. Raw Claude prices a bike as well as we do. The gap isn't advice, it's the run: a cold, vague, 17-item pile handed over at midnight, worked unattended, saved to disk, and safe to leave alone. A chat window can't do that.
| Claude, on its own | grenier | |
|---|---|---|
| Advice on one described item | Strong | Strong — no real edge, and we won't pretend otherwise |
| Works the batch while you're gone | No — it only acts while you type | Yes — that's the wake-up |
| Remembers, resumes | No — next session you re-paste everything | Yes — inventory.jsonl, say “reprends” |
| Survives a long pile | No — hit the context limit, lose the early items | Yes — each item written to disk as it's decided |
| Leads with what it's worth | If you ask | Always — the € figure is the headline |
| Safe to leave alone | Undefined — nothing separates “drafted” from “done” | Draft-only — publishing is your call, always |
Short version: a chat gives good advice, live, once. grenier is a harness — it runs, it persists, and it stops at the line you'd want it to stop at.
What it does — and what it doesn't
The boundary is the product. An operator you can't trust unattended isn't an operator, so here's the line, in public, before you install it.
✓ It does this today, zero setup
- Takes a whole batch of photos and works it unattended.
- Identifies, decides sell/donate/recycle/bin, prices against your local second-hand market, picks the channel.
- Writes every listing — title, price, description, category. Paste-ready.
- Leads with ~€X recoverable, summed from priced items only.
- Saves each decision to a local inventory you own. Say “reprends” and it resumes.
- Tells you what it couldn't call, and what it guessed.
✗ It does not do this — don't let us claim it
- It never publishes. Not a listing, not a message to a buyer, not an accepted offer. Draft is the last step it takes.
- It does not fill Vinted or Leboncoin forms while you sleep. That needs a browser automation layer, and grenier doesn't ship one — writing the drafts is where it stops. Anyone promising you the rest today is selling a demo.
- It doesn't invent value. No proof of authenticity, no designer price. Unsure gets flagged, not faked.
- It doesn't quietly collect your stuff. Your inventory and output files stay local — nothing gets uploaded to a marketplace, or to us. Claude still processes the photos and notes you hand it: that's how it reads them.
Prices where you live
A €65 bike isn't a $65 bike. grenier loads a local recipe for your country, so the marketplaces, prices, donation and recycling routes actually apply.
🇫🇷FranceLeboncoin · Vinted · Emmaüs · Momox
🇺🇸USFacebook Marketplace · Craigslist · eBay
🇬🇧UKGumtree · Vinted · charity shops
France, US & UK today — more countries coming, and adding yours is one file. Talk to it in your own language and it follows. Voir en français →
Install, then go to bed
Three doors, same Skill in ~/.claude/skills/. No account, no key, no server.
Small, inspectable, idempotent — it's ~40 lines and does nothing surprising:
curl -fsSL https://raw.githubusercontent.com/1789-tech/grenier/main/install.sh | sh
No clone, no commands. Paste this into Claude Code and it fetches the Skill itself:
Install the grenier skill from https://github.com/1789-tech/grenier into ~/.claude/skills/, then take my pile: I'll drop the photos now.
Tell us what to fix
grenier is early — if the wake-up missed something, a price felt wrong, or a step confused you, drop a line. It goes straight to the studio, not a support queue.