Shared product hub
One catalog for SKUs, descriptions, categories, and images. The same source of truth for you and every partner.
Suppliers & partners · in sync · portal & API
Work in tandem with your B2B partners, not through Dropbox or OneDrive
Tandem is the shared catalog where you manage product data, images, trade pricing, and stock. Your partners always see the same truth. They browse in a private portal, export CSV, or connect via API so you sell together with less chasing and fewer mistakes.
Free for up to 1,000 SKUs · partner portal & API included
- Governed publishing
- Contract price lists
- REST API & webhooks
Use cases
Built for B2B teams who need to stay in tandem
For manufacturers, importers, and distributors who work with retailers and resellers, but still keep partners aligned through spreadsheets, shared folders, and endless email threads.
Pricing & stock in sync
Update trade prices and inventory once. Partners never list what you cannot ship or at the wrong price.
Partner portal
Invite B2B customers to browse your range at their price list, save lists, and export what they need on their own.
Modern API
Partners pull catalog data into Shopify, WooCommerce, ERP, or custom tools, always aligned with yours.
Project quotes
Partners build named lists at contract prices and export CSV into estimating tools — no more rebuilding spreadsheets per job.
ERP in sync
Nightly API pulls with updated_since plus webhooks for same-day publishes and discontinuations between poll intervals.
Why Tandem
A PIM built for working in tandem.
Product information management for supplier and partner teams. No long implementation cycles. No bloated enterprise features. Just what you need to keep catalog, pricing, and stock aligned so your B2B partners can sell with confidence.
Product images
Upload and organise images per SKU. Partners get stable URLs for their storefronts and marketplaces, using the same assets you use.
Live stock levels
Update inventory once. Every portal view, export, and API response stays in tandem with what you can ship.
Partner price lists
Assign trade pricing per account. No more duplicate spreadsheets. Each partner sees only their prices.
Governed publishing
Readiness checks before go-live; partners only see complete, published products — not half-finished drafts.
CSV download
Partners export filtered catalogs or saved lists when they need a file for their own workflow.
API & webhooks
Documented REST endpoints and signed webhooks so store and ERP integrations stay in tandem without manual file drops.
B2B sales orders
Growth+ — customers submit orders at their prices; you fulfill with partial shipments, tracking, and dispatch emails.
Image sync API
Desktop and DAM tools upload by SKU; empty folders for missing images; public URLs generated for partners.
B2B ordering
Repeat orders without the phone call
On Growth and Pro, enable sales orders so trade partners draft and submit orders in the portal — at their contract prices, with your fulfilment rules.
See pricing- → Customer draft orders at contract prices
- → MOQ validation and delivery cost bands
- → Partial shipments with dispatch emails
- → Reorder from order history into a new draft
For integrators
ERP and storefronts stay in sync
OpenAPI-documented REST APIs, signed webhooks, and incremental sync with
updated_since — so integrators are not
rebuilding CSV exports by hand.
product.published·product.updated·product.discontinued·shipment.created
The problem today
Partners shouldn't have to chase you to stay in sync.
Without a central hub
Email, drives & outdated sheets
- 01 Partners email asking for the latest price list and stock
- 02 Product images live in folders with no consistent link to SKUs
- 03 Someone manually builds CSV files for each partner
- 04 Stores go live with wrong prices or out-of-stock items
Your team becomes the human API
With Tandem
One catalog. Both sides aligned.
- 01 You manage products, images, pricing, and stock in one workspace
- 02 Partners log in to see their trade prices and availability, the same data you published
- 03 They download CSV or connect via API to their own systems
- 04 Webhooks fire when you publish so every integration moves in tandem
- 05 Optional: partners place B2B orders online (Growth+)
Update once · partners sell with confidence
How it works
You supply. They sell. In tandem.
You manage the shared catalog at /app.
Your B2B partners access published products, their pricing, and stock at /customer,
or pull everything into their store through the API, always aligned with what you publish.
Supplier
- Own the catalog: products, images, stock & trade pricing
- Invite partners with their own price list
- Publish when data is ready; partners see it immediately
B2B partner
- Browse your published range at their prices
- Download CSV or sync via API, in tandem with your catalog
- Always know what's in stock before they list it
Built for trade
Wholesale & distribution teams who are done being the human API
Manufacturers, importers, and distributors use Tandem to keep partners aligned on catalog, pricing, and stock — with optional self-serve ordering when the relationship is ready.
Pricing
Simple plans for simple operations.
Start free while you build your shared catalog. Every plan includes the partner portal, customer API, and webhooks. Upgrading increases your storage, SKU cap, and API throughput. Growth and Pro also unlock sales orders so partners can place orders online, another way to work in tandem. Which plan do I need?
Starter
Get your catalog online and invite resellers.
Free
- 1 GB image storage
- 1,000 product SKUs
- 60 API requests per minute
- Reseller portal, CSV export & customer API
No online ordering — catalog & API only
Create free accountGrowth
Scale storage, SKUs, and accept customer orders.
£49/month
- 50 GB image storage
- 10,000 product SKUs
- 300 API requests per minute
- Reseller portal, CSV export & customer API
- Sales orders — customers place orders in the portal
Includes B2B sales orders in the partner portal
Upgrade to GrowthPro
High-volume catalogs and faster API throughput.
£199/month
- 500 GB image storage
- 100,000 product SKUs
- 600 API requests per minute
- Reseller portal, CSV export & customer API
- Sales orders — customers place orders in the portal
- White-label branding — customers see your branding in the portal
FAQ
Asked & answered.
Who is Tandem for?
B2B suppliers and their trade partners: manufacturers, distributors, and dropship businesses who need one shared place for catalog, pricing, stock, and images. If partners still email for updates, you are not working in tandem yet.
Which plan do I need?
Starter is ideal to prove the shared catalog, partner portal, and API at no cost. Choose Growth when you want partners to place B2B orders online, need higher SKU and storage limits, or use delivery cost bands. Pro suits high-volume catalogs, faster API throughput, and white-label portal branding.
Can this replace our product spreadsheet?
Yes. You manage the catalogue once; partners browse, export, or sync the same data themselves, with no more parallel versions drifting apart.
Can each partner have different pricing?
Yes. Assign partners to price lists so they see the correct trade pricing in the portal or via the API.
Do partners see draft products?
No. Products stay in draft until data, pricing, and images are ready. Only published products are visible to partners.
How do partners get access?
Invite them from your supplier workspace and assign a price list. They set a password and use the partner portal, or connect their store with API tokens.
Can partners sync data to their own systems?
Yes. CSV exports from the portal or the REST API for products, pricing, stock, attributes, and image URLs, into Shopify, WooCommerce, ERP tools, or custom integrations.
Do we need developers to use it?
No for day-to-day catalog work. Developers only need to be involved when a partner wants an API integration.
Can my customers place orders online?
Yes on Growth and Pro when you enable sales orders in company settings. Partners draft and submit orders at their contract prices; you fulfill with partial shipments and optional dispatch emails. Starter covers catalog, pricing, and API without online ordering.
How does delivery pricing work?
On Growth+, configure delivery cost bands by order weight and order value. When a partner submits an order, the estimated delivery charge is calculated from your bands (weight-first, then order value).
Is there an API for our ERP?
Yes. Trade partners use the customer catalog API with pagination, search, and incremental sync. See the API documentation and OpenAPI spec. Suppliers can also use the image sync API for desktop workflows.
Can we use our brand in the customer portal?
Yes on Pro (or when enabled by your platform admin): upload your logo and set an accent colour so the partner portal reflects your brand instead of default styling.
What happens when we discontinue a product?
Move the product to discontinued lifecycle. It drops from the partner catalog for new sales but integrators receive a product.discontinued webhook to update their systems.
Is this for taking orders?
Tandem starts with product data: catalogues, trade pricing, stock, images, and API access so partners can plug into their own sales channels. Growth and Pro add sales orders in the partner portal; Starter covers catalog, pricing, and API without online ordering.
Is this a full enterprise PIM?
No, and that is intentional. Tandem focuses on what B2B supplier and partner teams need to stay in tandem: product data, images, pricing, stock, and a modern API. Simple to set up, easy to maintain.
How do I get started?
Register at /app/register. You get a company workspace to add products, upload images, set pricing and stock, invite partners, and publish your shared catalog.