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Mercoa MCP by usefulapi

by m190version 1.35.3i★ –iRuns in the cloud
Registry nameio.usefulapi/mercoa

Install

Overview

Description from the maker (original English)

Query and manage Mercoa AP/AR bill-pay: entities, invoices, transactions and payment methods.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

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 17 things (tools) mercoa_find_entities, mercoa_get_entity, mercoa_get_entity_events, mercoa_get_entity_invoice_metrics …
  • The registry lists no key to fill in.

You need

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:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://mercoa.usefulapi.io/mcp

Run this in your terminal

claude mcp add --transport http mercoa https://mercoa.usefulapi.io/mcp

Open in Cursor

Or copy the settings yourself

Paste 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.

Open in VS Code

Or copy the settings yourself

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:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://mercoa.usefulapi.io/mcp

Menu 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.

  • mercoa_find_entities

    Find/search entities (buyers, vendors, payors, payees). Use to look up counterparties by name/email/foreignId or list all. GET /entity.

  • mercoa_get_entity

    Get a single entity by ID (or foreign ID). GET /entity/{entityId}.

  • mercoa_get_entity_events

    Get the event/audit log for an entity. GET /entity/{entityId}/events.

  • mercoa_get_entity_invoice_metrics

    Get 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_methods

    List an entity's payment methods (bank accounts, cards, check, etc.). GET /entity/{entityId}/paymentMethods.

  • mercoa_get_payment_method

    Get a single payment method for an entity. GET /entity/{entityId}/paymentMethod/{paymentMethodId}.

  • mercoa_list_entity_users

    List the users belonging to an entity (approvers, admins, etc.). GET /entity/{entityId}/users.

  • mercoa_find_invoices

    Find/search invoices (bills) across payers and vendors. Filter by status, entity, date, approver and more. GET /invoices (plural list endpoint).

  • mercoa_get_invoice

    Get a single invoice (bill) by ID. GET /invoice/{invoiceId}.

  • mercoa_get_invoice_events

    Get the event/audit log for an invoice (status changes, approvals, payments). GET /invoice/{invoiceId}/events.

  • mercoa_find_transactions

    List/search payment transactions. Filter by entity, invoice, status, type and date. GET /transactions.

  • mercoa_get_transaction

    Get a single payment transaction by ID. GET /transaction/{transactionId}.

  • mercoa_get_organization

    Get the caller's Mercoa organization configuration (settings, payment methods enabled, etc.). GET /organization.

  • mercoa_create_entity

    WRITE — 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_invoice

    WRITE — 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_invoice

    WRITE — 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_comment

    WRITE — adds a comment to an invoice (visible in its activity log). POST /invoice/{invoiceId}/comment.

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 14 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 17 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 91% 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 Mercoa 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 (1.35.3) 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

by stripe

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

Runs in the cloud★ 2,043MITUpdated 12 months ago
Install

MCP Cn Commerce

by TonyWang-hub

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

Runs on your computer★ 96MITUpdated 27 days ago
Install

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.

Mercoa MCP by usefulapi

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

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://mercoa.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http mercoa https://mercoa.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
{

"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.

Tools

ToolTypeWhat it does
mercoa_find_entitiesreadFind entities
mercoa_get_entityreadGet entity
mercoa_get_entity_eventsreadGet entity events
mercoa_get_entity_invoice_metricsreadGet entity invoice metrics
mercoa_list_entity_payment_methodsreadList entity payment methods
mercoa_get_payment_methodreadGet payment method
mercoa_list_entity_usersreadList entity users
mercoa_find_invoicesreadFind invoices
mercoa_get_invoicereadGet invoice
mercoa_get_invoice_eventsreadGet invoice events
mercoa_find_transactionsreadFind transactions
mercoa_get_transactionreadGet transaction
mercoa_get_organizationreadGet organization
mercoa_create_entitywriteCreate entity
mercoa_create_invoicewriteCreate invoice
mercoa_update_invoicewriteUpdate invoice
mercoa_add_invoice_commentwriteAdd invoice comment
mercoa_usage_statusmetaUsage status (free-tier meter)
mercoa_request_featuremetaRequest a missing feature
mercoa_upgrademetaUpgrade to Pro or Pro+
mercoa_cancel_subscriptionmetaCancel 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

PlanPriceLimit
Free$050 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.

License

MIT — see LICENSE. Documentation only; the server is hosted.

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