Spree Commerce: open-source B2B and marketplace ecommerce
Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.
Description from the maker (original English)
Query and manage Mercoa AP/AR bill-pay: entities, invoices, transactions and payment methods.
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Works in Claude on the web, desktop and mobile:
https://mercoa.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http mercoa https://mercoa.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"mercoa": {
"url": "https://mercoa.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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"mercoa": {
"type": "http",
"url": "https://mercoa.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:
https://mercoa.usefulapi.io/mcpMenu names can differ slightly by plan and over time.
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These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 8, 2026. The maker wrote them, not us; we show them as plain text.
mercoa_find_entitiesFind/search entities (buyers, vendors, payors, payees). Use to look up counterparties by name/email/foreignId or list all. GET /entity.
mercoa_get_entityGet a single entity by ID (or foreign ID). GET /entity/{entityId}.
mercoa_get_entity_eventsGet the event/audit log for an entity. GET /entity/{entityId}/events.
mercoa_get_entity_invoice_metricsGet aggregate invoice metrics (totals/counts, grouped by currency) for an entity's payables/receivables — for AP/AR dashboards and aging. GET /entity/{entityId}/invoice-metrics.
mercoa_list_entity_payment_methodsList an entity's payment methods (bank accounts, cards, check, etc.). GET /entity/{entityId}/paymentMethods.
mercoa_get_payment_methodGet a single payment method for an entity. GET /entity/{entityId}/paymentMethod/{paymentMethodId}.
mercoa_list_entity_usersList the users belonging to an entity (approvers, admins, etc.). GET /entity/{entityId}/users.
mercoa_find_invoicesFind/search invoices (bills) across payers and vendors. Filter by status, entity, date, approver and more. GET /invoices (plural list endpoint).
mercoa_get_invoiceGet a single invoice (bill) by ID. GET /invoice/{invoiceId}.
mercoa_get_invoice_eventsGet the event/audit log for an invoice (status changes, approvals, payments). GET /invoice/{invoiceId}/events.
mercoa_find_transactionsList/search payment transactions. Filter by entity, invoice, status, type and date. GET /transactions.
mercoa_get_transactionGet a single payment transaction by ID. GET /transaction/{transactionId}.
mercoa_get_organizationGet the caller's Mercoa organization configuration (settings, payment methods enabled, etc.). GET /organization.
mercoa_create_entityWRITE — creates a real entity (customer/vendor/payor/payee) in Mercoa. Supply role flags, accountType, and a nested `profile` object (business or individual details). POST /entity.
mercoa_create_invoiceWRITE — creates a real invoice/bill in Mercoa. Set status (DRAFT to stage, NEW to submit), amount, currency, payer/vendor, dates and line items. POST /invoice.
mercoa_update_invoiceWRITE — updates an existing invoice/bill (all fields optional). Commonly used to advance status (e.g. DRAFT→NEW→SCHEDULED) or change amounts, dates, or payment methods. POST /invoice/{invoiceId}.
mercoa_add_invoice_commentWRITE — adds a comment to an invoice (visible in its activity log). POST /invoice/{invoiceId}/comment.
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 8, 2026
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Read 17 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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.
The GitHub repo last changed –, and the latest version (1.36.5) reached the registry today.
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.
In the same category: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.
Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.
8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending
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.
Query and manage Mercoa AP/AR bill-pay — entities, invoices, transactions and payment methods — from Claude, Cursor, or any MCP client. Hosted, no local install — connect with your Mercoa API key.
Live endpoint: https://mercoa.usefulapi.io/mcp · Homepage: https://usefulapi.io/mercoa
https://mercoa.usefulapi.io/mcp.claude mcp add --transport http mercoa https://mercoa.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "mercoa": { "url": "https://mercoa.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 Mercoa credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/mercoa/
On first connect you'll paste your Mercoa API key. It's validated, stored per-user, and scoped to you.
| Tool | Type | What it does |
|---|---|---|
mercoa_find_entities | read | Find entities |
mercoa_get_entity | read | Get entity |
mercoa_get_entity_events | read | Get entity events |
mercoa_get_entity_invoice_metrics | read | Get entity invoice metrics |
mercoa_list_entity_payment_methods | read | List entity payment methods |
mercoa_get_payment_method | read | Get payment method |
mercoa_list_entity_users | read | List entity users |
mercoa_find_invoices | read | Find invoices |
mercoa_get_invoice | read | Get invoice |
mercoa_get_invoice_events | read | Get invoice events |
mercoa_find_transactions | read | Find transactions |
mercoa_get_transaction | read | Get transaction |
mercoa_get_organization | read | Get organization |
mercoa_create_entity | write | Create entity |
mercoa_create_invoice | write | Create invoice |
mercoa_update_invoice | write | Update invoice |
mercoa_add_invoice_comment | write | Add invoice comment |
mercoa_usage_status | meta | Usage status (free-tier meter) |
mercoa_request_feature | meta | Request a missing feature |
mercoa_upgrade | meta | Upgrade to Pro or Pro+ |
mercoa_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.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro | $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 mercoa_upgrade (it returns a Stripe Checkout link). Cancel any time with mercoa_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running mercoa_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT — see LICENSE. Documentation only; the server is hosted.