Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.
Collmex MCP by usefulapi
Overview
Description from the maker (original English)
Review Collmex customers, products, invoices and orders; create customers and addresses.
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 15 things (tools) collmex_list_customers, collmex_list_vendors, collmex_list_addresses, collmex_list_products …
- 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://collmex.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http collmex https://collmex.usefulapi.io/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"collmex": {
"url": "https://collmex.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": {
"collmex": {
"type": "http",
"url": "https://collmex.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://collmex.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.
collmex_list_customersSearch Collmex customers (record CUSTOMER_GET): by customer number, free text (name, city, e-mail ...), postal code or country. Returns address, contact, bank (IBAN/BIC), VAT id, payment terms, agent and status fields. Inactive customers are left out unless asked for.
collmex_list_vendorsSearch Collmex vendors/suppliers (record VENDOR_GET): by vendor number, free text, postal code or country. Returns address, contact, bank, VAT id, payment terms and expense account fields.
collmex_list_addressesSearch the Collmex address book (record ADDRESS_GET): customers, vendors and address-book entries in one list, optionally with their contact persons. address_type: 0 all, 1 customers, 2 vendors, 3 address-book entries.
collmex_list_productsSearch Collmex products (record PRODUCT_GET): by product number, product group, free text (number, description, remark, GTIN, manufacturer) or price group. Returns description, unit, tax class, sales price, purchase data and stock settings.
collmex_get_available_stockCurrently available stock per product (record STOCK_AVAILABLE_GET): on-hand stock of the available stock types minus demand due today or earlier. A service product shows (NULL). Leave product_no empty for every product.
collmex_list_invoicesSearch Collmex customer invoices and credit notes (record INVOICE_GET): by invoice number, customer, invoice date range, customer order or product. Each invoice has its header (customer address, dates, payment terms, status code: 0 new, 10 to be posted, 20 open, 30 dunned, 40 set
collmex_list_sales_ordersSearch Collmex customer orders (record SALES_ORDER_GET): by order number, customer, order date range or the customer's own order number. Each order has its header (customer address, dates, payment terms, status code: 0 new, 10 confirmed, 30 paid, 50 delivered, 90 invoiced, 100 do
collmex_list_payment_termsThe payment terms defined in Collmex (record TERMS_OF_PAYMENT_GET): number, description, payment method and discount periods. The number is what customers, vendors and invoices refer to as payment_terms.
collmex_list_open_itemsOpen items (unpaid invoices) from the Collmex accounting (record OPEN_ITEMS_GET), for customers (receivables, default) or vendors (payables). Returns invoice number, document and due date, days overdue, dunning level, amount, paid and outstanding. Optionally as of a key date.
collmex_list_accounting_documentsAccounting postings (record ACCDOC_GET), one row per posting position: posting number, date, text, account, debit/credit (0 debit, 1 credit), amount, customer/vendor, invoice number. Filter by fiscal year, account, cost centre, customer, vendor, invoice or document date range. Ca
collmex_get_account_balancesAccount balances from the Collmex accounting (record ACCBAL_GET) for a fiscal year: account number, name and balance. Filter by account, account group (1 other, 2 fixed assets, 3 bank/cash, 4 income, 5 expenses, 6 output VAT, 7 input VAT, 8 receivables, 9 payables, 10 depreciatio
collmex_list_projectsCollmex projects (record PROJECT_GET) with customer, budget, value of recorded activities, completion state and the project's rates (rate number, description, product, hourly or daily rate).
collmex_list_activitiesRecorded time-tracking activities (record ACTIVITIES_GET): project, employee, date, from/to times, breaks, description, and the invoice that billed it. Filter by project, employee (needs company), date range, only not-yet-billed or only invoice-relevant activities.
collmex_create_customerWRITE: create a NEW customer in Collmex (record CMXKND without a customer number, so Collmex assigns the next number; an existing customer is never overwritten). Each call creates another customer: check collmex_list_customers first to avoid duplicates. Nothing is sent to the cus
collmex_create_addressWRITE: create a NEW entry in the Collmex address book (record CMXADR, address type 3, no address number so Collmex assigns one; existing addresses are never overwritten). Each call creates another entry: check collmex_list_addresses first to avoid duplicates. Nothing is sent to t
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 48 ms (HTTP 200)
- – Not applicable
Sign-in with OAuth
No sign-in needed
- ✓ Pass
No hidden instructions in tool descriptions
Read 15 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 Collmex 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.
Collmex MCP by usefulapi
Hosted at https://collmex.usefulapi.io/mcp.
Connect
- Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste
https://collmex.usefulapi.io/mcp. - Claude Code:
claude mcp add --transport http collmex https://collmex.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": { "collmex": { "url": "https://collmex.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 the login page asks for your Collmex credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/collmex/
Connect your Collmex account using the credentials described on the login page.
Tools
| Tool | Type | What it does |
|---|---|---|
collmex_list_customers | read | List customers |
collmex_list_vendors | read | List vendors |
collmex_list_addresses | read | List addresses |
collmex_list_products | read | List products |
collmex_get_available_stock | read | Get available stock |
collmex_list_invoices | read | List invoices |
collmex_list_sales_orders | read | List sales orders |
collmex_list_payment_terms | read | List payment terms |
collmex_list_open_items | read | List open items |
collmex_list_accounting_documents | read | List accounting postings |
collmex_get_account_balances | read | Get account balances |
collmex_list_projects | read | List projects |
collmex_list_activities | read | List project activities |
collmex_create_customer | write | Create customer |
collmex_create_address | write | Create address-book entry |
collmex_usage_status | meta | Usage status (free-tier meter) |
collmex_request_feature | meta | Request a missing feature |
collmex_upgrade | meta | Upgrade to Pro or Pro+ |
collmex_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 Collmex account) | $9/mo or $90/yr (2 months free) | Unlimited* |
\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.
Pro covers this server only. Subscribe with collmex_upgrade (it returns a Stripe Checkout link). Cancel any time with collmex_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running collmex_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
License
MIT