Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.
SOS Inventory MCP by usefulapi
Overview
Description from the maker (original English)
Read SOS Inventory stock and orders; create customers, items and purchase or sales orders.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Online shops & payments
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 3 of 3 passed
- Runs on the maker’s server: what you ask it goes through their server.
- Can do 19 things (tools) sosinventory_list_items, sosinventory_get_item, sosinventory_get_item_bom, sosinventory_list_customers …
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://sos-inventory.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http sos-inventory https://sos-inventory.usefulapi.io/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"sos-inventory": {
"url": "https://sos-inventory.usefulapi.io/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"sos-inventory": {
"type": "http",
"url": "https://sos-inventory.usefulapi.io/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://sos-inventory.usefulapi.io/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
sosinventory_list_itemsList or search inventory items (products, assemblies, services...) with SKU, type, quantities (onhand, available, on sales/purchase orders) and prices. Filter by free text, SKU, category, type, tags, ids or update time; pass location to see quantities at one location. GET /api/v2
sosinventory_get_itemOne item by id with all fields: quantities, prices, accounts, vendor, category, units of measure, price tiers, custom fields. GET /api/v2/item/{id}.
sosinventory_get_item_bomThe bill of materials of an assembly item: component items, quantities and costs. GET /api/v2/item/{id}/bom.
sosinventory_list_customersList or search customers with contact details, billing/shipping addresses, terms, sales rep and credit-hold flag. Filter by name/notes text, name, email or update time. GET /api/v2/customer.
sosinventory_get_customerOne customer by id with all fields (addresses, contact, terms, price tier, custom fields). GET /api/v2/customer/{id}.
sosinventory_list_vendorsList or search vendors (suppliers) by name or notes, with contact details, address, terms and account number. GET /api/v2/vendor.
sosinventory_get_vendorOne vendor by id with all fields. GET /api/v2/vendor/{id}.
sosinventory_list_sales_ordersList or search sales orders with customer, dates, totals, order stage, channel and (with summary=false) line items with shipped/invoiced quantities. GET /api/v2/salesorder.
sosinventory_get_sales_orderOne sales order by id with all fields and line items. GET /api/v2/salesorder/{id}.
sosinventory_list_purchase_ordersList or search purchase orders with vendor, dates, expected receipt date, totals and (with summary=false) line items with received quantities. GET /api/v2/purchaseorder.
sosinventory_get_purchase_orderOne purchase order by id with all fields and line items. GET /api/v2/purchaseorder/{id}.
sosinventory_list_transactionsList any SOS transaction type: invoices, estimates, sales receipts, item receipts, shipments, pick tickets, work orders, builds, adjustments, transfers, RMAs, returns, returns to vendor, rentals, rental returns and processes. Filters: query, date range, updated_since; status (ope
sosinventory_get_transactionOne transaction of any type by id, with all fields and line items. GET /api/v2/{type}/{id}.
sosinventory_list_reference_dataList a configuration or reference table: locations, channels, classes, departments, payment terms, tax codes, sales reps, ship methods, payment methods, priorities, order stages, price tiers, units of measure, users (id, name, email), accounts, custom fields, warranties, bins, wo
sosinventory_create_customerWRITE: creates a new customer record in SOS Inventory. Only name is required. Check sosinventory_list_customers first so you do not create a duplicate. POST /api/v2/customer.
sosinventory_create_vendorWRITE: creates a new vendor (supplier) record in SOS Inventory. Only name is required. Check sosinventory_list_vendors first to avoid a duplicate. POST /api/v2/vendor.
sosinventory_create_itemWRITE: creates a new inventory item. Optionally books initial stock: SOS then creates an inventory adjustment for the quantity at the given location. Item names must be unique within their category: check sosinventory_list_items first. POST /api/v2/item.
sosinventory_create_sales_orderWRITE: creates a new sales order for an EXISTING customer with line items for existing items (a customer or item cannot be created inside an order: use the create tools first). The order number is assigned automatically (SOS auto-numbering) unless you pass one. Confirm the custom
sosinventory_create_purchase_orderWRITE: creates a new purchase order to an EXISTING vendor with line items for existing items. The PO number is assigned automatically unless you pass one. Confirm the vendor, items, quantities and costs with the user before calling. POST /api/v2/purchaseorder.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- ✓ Pass
Endpoint responds
Responded in 232 ms (HTTP 200)
- – Not applicable
Sign-in with OAuth
No sign-in needed
- ✓ Pass
No hidden instructions in tool descriptions
Read 19 tool descriptions and found no hidden instructions to the AI
Compared with others in Online shops & paymentsi
- More stars than 0% of the other 1743 servers in this category
- Published to the registry more recently than 95% of the other 1743 servers in this category
- Basic checks equal to or better than 100% of the other 1743 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is SOS Inventory MCP by usefulapi safe?
It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.6.3) reached the registry yesterday.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Stripe MCP
Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.
MCP Cn Commerce
8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
SOS Inventory MCP by usefulapi
Hosted at https://sos-inventory.usefulapi.io/mcp.
Connect
- Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste
https://sos-inventory.usefulapi.io/mcp. - Claude Code:
claude mcp add --transport http sos-inventory https://sos-inventory.usefulapi.io/mcp, then run/mcpto log in. - VS Code: Add to VS Code.
- Cursor and other clients: add the URL as a remote MCP server:
{
"mcpServers": { "sos-inventory": { "url": "https://sos-inventory.usefulapi.io/mcp" } } }
Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and you sign in with your SOS Inventory account.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/sos-inventory/
Sign in with your SOS Inventory company account and approve access. The connecting user must be able to read the company user list. Access follows that user's SOS permissions.
Tools
| Tool | Type | What it does |
|---|---|---|
sosinventory_list_items | read | List items |
sosinventory_get_item | read | Get item |
sosinventory_get_item_bom | read | Get item bill of materials |
sosinventory_list_customers | read | List customers |
sosinventory_get_customer | read | Get customer |
sosinventory_list_vendors | read | List vendors |
sosinventory_get_vendor | read | Get vendor |
sosinventory_list_sales_orders | read | List sales orders |
sosinventory_get_sales_order | read | Get sales order |
sosinventory_list_purchase_orders | read | List purchase orders |
sosinventory_get_purchase_order | read | Get purchase order |
sosinventory_list_transactions | read | List other transactions |
sosinventory_get_transaction | read | Get transaction |
sosinventory_list_reference_data | read | List reference data |
sosinventory_create_customer | write | Create customer |
sosinventory_create_vendor | write | Create vendor |
sosinventory_create_item | write | Create item |
sosinventory_create_sales_order | write | Create sales order |
sosinventory_create_purchase_order | write | Create purchase order |
sosinventory_usage_status | meta | Usage status (free-tier meter) |
sosinventory_request_feature | meta | Request a missing feature |
sosinventory_upgrade | meta | Upgrade to Pro or Pro+ |
sosinventory_cancel_subscription | meta | Cancel the Pro subscription |
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
Pricing
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro (per company) | $9/mo or $90/yr (2 months free) | 10,000 tool calls / month |
Pro covers this server only. Subscribe with sosinventory_upgrade (it returns a Stripe Checkout link). Cancel any time with sosinventory_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running sosinventory_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
License
MIT