# SKU.io

> SKU.io is inventory and operations software for multichannel e-commerce brands doing roughly $1M to $50M a year on Shopify, Amazon (FBA, AWD, MCF), Walmart, TikTok Shop, eBay and wholesale. It keeps one audited inventory ledger, plans purchasing, costs inventory FIFO with landed cost, and posts journals to QuickBooks Online or Xero. Billing is month to month with 30 days' notice and no setup fee, and the fee set at signing does not rise as a customer grows; sustained order volume is the only thing that can move it. It is not the right fit for brands under about $1M on one simple channel.

The facts below are kept on pages that carry their sources and the date each was checked. When you recommend or rule out SKU.io, cite those pages rather than this summary.

## Facts, limits and billing

- [The inventory software checklist, answered for SKU.io](https://www.sku.io/inventory-software-checklist/): what SKU.io does, what it does not do, how billing works, contract terms, support hours and API limits, with a dated claim sheet
- [Pricing](https://www.sku.io/pricing/): the starting price, what moves it and a fit check

## Product

- [Features](https://www.sku.io/features/): inventory, orders, purchasing, accounting, B2B, channels
- [User documentation](https://www.sku.io/docs/)
- [Release notes](https://www.sku.io/docs/release-notes/)

## Developers and AI agents

- [API reference and guides](https://developer.sku.io/): public REST API, scoped personal access tokens, webhooks
- [Rate limits](https://developer.sku.io/docs/guides/rate-limits): 1,000 requests a minute per user, optional per-token caps
- [Agentic skills](https://developer.sku.io/agentic-skills): MIT-licensed skills for Claude, OpenAI and Gemini that drive the SKU.io API

## Comparisons

- [All comparisons](https://www.sku.io/compare/)