n8nData and reporting

Multi channel inventory sync

One stock number, propagated to every sales channel within a minute of any movement, with oversell protection that actually holds.

Starting price$1,950fixed against a written scope
Build window1 to 2 weeksfrom access and answers
Hours returned26 a monthconservative end of the range
Payback2 monthsat $38 an hour loaded
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The problem

Why this exists

Selling the same unit twice on two channels costs you the margin, the shipping, and usually the review. Manual reconciliation at end of day is always one day too late.

Trigger

Order webhooks from every channel, plus a warehouse movement feed.

The build

What it does, in order

  1. 01

    Single source of truth

    One ledger holds real available stock. Channels are projections of it, never the authority.

  2. 02

    Reserve on order

    Stock is reserved the instant an order is created, before payment settles, and released on a timer if payment fails.

  3. 03

    Push deltas

    Only the changed SKUs are pushed, batched per channel to respect their rate limits.

  4. 04

    Buffer thresholds

    Per channel safety buffer on fast movers, so the last unit is never exposed to two checkouts at once.

  5. 05

    Reconcile nightly

    Full comparison against the warehouse count, with a discrepancy report rather than a silent overwrite.

  6. 06

    Alert on drift

    Any SKU where channel and ledger disagree by more than the buffer raises an alert before it becomes an oversell.

The guard rails

What stops it doing damage

This is the part that separates an automation that runs for years from one that quietly corrupts your data for a month.

  • Optimistic locking on the ledger, so two simultaneous orders cannot both take the last unit
  • Channel push failures retry with backoff and surface after three attempts
  • Nightly reconciliation reports rather than auto-corrects, because silent corrections hide real warehouse problems
  • Manual override with an audit trail for the cases warehouse staff must win

Honest limits

When this is the wrong automation

You sell on one channel. Sync between one system and itself is a solved problem.

Related builds

Others on this platform or solving this problem

n8nfrom $1,450

Inbound lead router and enricher

Every inbound lead lands enriched, scored, assigned, and acknowledged inside ninety seconds, whichever channel it arrived through.

Build
4 to 6 days
Saves
22 hrs a month
Returns
$836 a month
Payback
2 months

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