Pick Path Sequencer

The problem this kills

Your pickers know the SKUs. What slows them down is the walking. A pick list printed in SKU order, or worse, in the order an item happened to land in the order, sends a picker zigzagging up and down the same aisles, doubling back for the one bin they passed three rows ago. On a busy day that wasted travel is the single biggest hidden cost on your floor, and it gets worse every time you add a new aisle or reslot a fast mover.

The fix is boring and well known: sequence the pick list to match how someone actually walks the building (a serpentine "snake" up one aisle and down the next, or a fixed zone order). The catch is that off-the-shelf WMS modules that do this cost a fortune and assume a layout that isn't yours. So most warehouses just... don't. They print the list in whatever order the system spits out and eat the lost steps.

This Implementation Plan lets you build the sequencer yourself - tailored to your exact aisle and bin numbering - in a weekend, with no developer.

What you'll build

A small, secure web app for your team where you:

• Enter your warehouse layout once: aisles, bins, the order someone walks them, and which way travel flows.
• Upload or paste a pick list with bin locations.
• Get back the same picks, automatically re-ordered to follow your walking path - no crisscrossing, no backtracking.
• Let a supervisor review the proposed sequence and approve it before it ever hits the floor.
• Print a clean, sequenced pick sheet and download a CSV in the columns your system expects.

It handles the real-world messiness too: pickable vs. reserve locations, your own custom location sort order, and duplicate guards so the same pick list can't be processed twice.

What's inside the Implementation Plan

• It starts by interviewing you about your warehouse. Before it builds a single screen, the plan has the AI agent ask you about your aisle and bin naming, how your pickers actually walk the floor, your pick-list export format, and your edge cases - then it tailors the data model and the sequencing logic to your answers. You are not getting a generic template; you are getting your warehouse's tool.
• A step-by-step build, where every step ends in a ready-to-paste prompt for your AI coding agent.
• The full data model for layouts, locations, pick lists, and the sequencing run.
• The sequencing logic: serpentine and zone ordering, with your own location sort order.
• Handling for pickable vs. reserve bins and duplicate pick-list guards.
• A supervisor approval gate, a printable pick sheet, and a CSV export.
• A complete "No API yet?" fallback so you can build and use this today with nothing but spreadsheets.

The governance it includes (this is the point)

This isn't a script that quietly reorders your floor work. It's a controlled internal tool:

• Login so only your team can use it.
• Row-level security so each organization or site only ever sees its own layouts and pick lists.
• A complete audit trail - who uploaded what, who approved which sequence, and when.
• A human-in-the-loop approval gate: the AI proposes the sequenced list, a supervisor reviews and approves it, and only an approved list is marked ready for the floor. The tool drafts; a person decides.
• Duplicate guards so the same pick list ID can't be sequenced and sent twice.

Who it's for

Pick/pack supervisors, industrial engineers, and fulfillment leads who own the floor and are tired of watching good pickers waste steps. If you can describe how someone walks your warehouse, you can build this.

You've got this - paste the first prompt and let the interview tailor it to your warehouse.