Invoiced MCP server

Read Invoiced customers, invoices, payments, subscriptions; create customers, draft invoices, notes. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.

Connect Invoiced50 free tool calls a month

What can I ask?

Turn on the Invoiced connector, then ask in plain words. The AI picks the tools.

Which invoices are past due, and how much does each customer owe?
What is Acme Ltd's current outstanding balance?
List the payments we received this month.
Add a note to Acme Ltd saying they promised to pay on Friday.

What you can do with Invoiced in Claude and ChatGPT

For accounts receivable teams who chase customer payments with Invoiced.

Find past-due invoices and what each customer owes

The AI lists invoices with status, dates, totals and balance, filtered by customer, paid flag or date range. It sums up the open amounts per customer.

Check one customer's balance and contacts

The AI reads a customer's outstanding, past due and available credit, plus the customer's terms and contacts.

Review the payments you received

The AI lists payments with customer, date, amount and method, and reads one payment with the invoices and credit notes it was applied to.

Review subscriptions and plans

The AI lists subscriptions with customer, plan, status, recurring total and MRR, and reads one subscription or plan.

Create a customer or a draft invoice

The AI creates a customer, or a draft invoice with line items from your catalog. A draft is not issued, emailed or charged until a person finalizes it.

Changes data

Add a collection note or task

The AI adds an internal note to a customer or invoice, or creates a task to call, write, email or review. It also reads existing notes and tasks.

Changes data

How do I connect Invoiced?

Before you connect

The login page asks for your Invoiced API key and Environment.

In Invoiced go to Settings → Developers → API Keys and create a key (one key per application is recommended). Choose Production for your live account or Sandbox for sandbox.invoiced.com. Your key is used only to call the Invoiced API on your behalf and to derive a private account id; it is never shown to anyone.

Claude claude.ai · Desktop

Open Customize → Connectors, then click + Add → Add custom connector.
Enter the name Invoiced and this URL, then click Add:
https://invoiced.usefulapi.io/mcp
Claude opens the login page: enter your Invoiced API key and Environment.
In a chat, click + → Connectors and turn on Invoiced.

Team and Enterprise: an Owner adds the connector for the organization first.

ChatGPT chatgpt.com

Open Plugins, click +, then Add custom MCP server.
Enter the name Invoiced and this URL, choose OAuth as the authentication, confirm the warning and create it:
https://invoiced.usefulapi.io/mcp
ChatGPT opens the login page: enter your Invoiced API key and Environment.
In Plugins, install Invoiced, then choose it in a chat.

No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.

Claude Code

Run this command, then run /mcp in Claude Code to log in:

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

Cursor

Add to Cursor or add this to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "invoiced": {
      "url": "https://invoiced.usefulapi.io/mcp"
    }
  }
}

VS Code

Add to VS Code or add this to .vscode/mcp.json:

{
  "servers": {
    "invoiced": {
      "type": "http",
      "url": "https://invoiced.usefulapi.io/mcp"
    }
  }
}

Codex

Run these commands. The second one opens the login page:

codex mcp add invoiced --url https://invoiced.usefulapi.io/mcp

codex mcp login invoiced

Other clients

Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.

https://invoiced.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: the login page asks for your Invoiced API key and Environment. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

Pricing

Plan	Price	Limit
Free	$0	50 tool calls / month
Proper user	$9/mo · $90/yr	10,000 tool calls / month
Pro+per user	$39/mo · $390/yr	100,000 tool calls / month

Each paid plan covers this Invoiced server only. Ask your AI to run invoiced_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with invoiced_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with invoiced_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

Tools 31

Show all 31 tools (the AI picks them for you)

Read only · 23

List customersinvoiced_list_customers
List customers (accounts receivable debtors): name, number, email, payment terms, currency, autopay and chasing settings, owner. Filter by open balance, saved payment method, update time or any exact-match column.
Get customerinvoiced_get_customer
One customer by id: contact details, address, terms, currency, autopay, chasing cadence, credit hold/limit, parent customer, metadata.
Get customer balanceinvoiced_get_customer_balance
A customer's current balance: total outstanding, past due, and available credit, in the customer's currency (or `currency`).
List customer contactsinvoiced_list_contacts
List the contacts of one customer: name, title, email, phone, whether primary (copied on communications) and SMS-enabled.
List invoicesinvoiced_list_invoices
List invoices with number, customer, status (draft, not_sent, sent, viewed, past_due, pending, paid, voided), dates, totals, balance and line items. Filter by customer, paid flag, invoice date range, update time or any exact-match column.
Get invoiceinvoiced_get_invoice
One invoice by id: status, dates, payment terms, totals, balance, line items, discounts, taxes, ship-to, payment and PDF links. `expand` replaces ids with full objects (e.g. customer).
Get invoice payment planinvoiced_get_invoice_payment_plan
The payment plan (installments with dates, amounts and balances, and approval status) attached to an invoice. Errors with 404 when the invoice has none.
List paymentsinvoiced_list_payments
List payments received: customer, date, amount, unapplied balance, method (check, wire, ACH, card, ...), reference, whether matched or voided. Read only.
Get paymentinvoiced_get_payment
One payment by id, including which invoices and credit notes it was applied to (`applied_to`).
List credit notesinvoiced_list_credit_notes
List credit notes: customer, status (draft, open, paid, closed, voided), totals, remaining balance, line items.
Get credit noteinvoiced_get_credit_note
One credit note by id with line items, totals and balance.
List estimatesinvoiced_list_estimates
List estimates (quotes): customer, status (draft, not_sent, sent, approved, invoiced, declined, voided), expiration date, deposit, totals, resulting invoice.
Get estimateinvoiced_get_estimate
One estimate by id with line items, totals, deposit and approval state.
List catalog itemsinvoiced_list_items
List the item catalog (products and services): id, name, currency, unit cost, type, taxable. Use item ids as `catalog_item` when creating a draft invoice.
Get catalog iteminvoiced_get_item
One catalog item by its id (a string such as "delivery").
List tax ratesinvoiced_list_tax_rates
List tax rates: id, name, value, whether a percentage, whether inclusive, currency.
List subscription plansinvoiced_list_plans
List subscription plans: id, name, currency, amount, pricing mode, billing interval, tiers.
Get subscription planinvoiced_get_plan
One subscription plan by its id (a string).
List subscriptionsinvoiced_list_subscriptions
List recurring subscriptions: customer, plan, quantity, billing period, status (not_started, active, past_due, finished, canceled), recurring total and MRR, contract renewal.
Get subscriptioninvoiced_get_subscription
One subscription by id with plan, add-ons, billing period, contract terms, recurring total and MRR.
List notesinvoiced_list_notes
List collection notes, newest first, for one customer or one invoice (give exactly one), or all notes when neither is given.
List tasksinvoiced_list_tasks
List collection tasks (call, letter, email, review): name, action, customer, assignee, due date, whether complete.
List eventsinvoiced_list_events
The activity feed, newest first: event type (such as invoice.paid, customer.created), time, the object it concerns and who did it. Optionally only the events of one object.

Changes data · 4

Create customerinvoiced_create_customer
WRITE: create a customer in Invoiced. Nothing is sent to anyone and no money moves. Name is required; Invoiced generates the customer number unless given.
Create draft invoiceinvoiced_create_draft_invoice
WRITE: create a DRAFT invoice for a customer. It is always created as a draft: it is not issued, not emailed, not charged and cannot trigger AutoPay until a person finalizes it in Invoiced. At least one line item is required. POST /invoices with draft=true.
Add noteinvoiced_add_note
WRITE: add an internal note to a customer or an invoice (give exactly one). Notes are internal; nothing is sent.
Create taskinvoiced_create_task
WRITE: create a collection task for a customer (a reminder to call, write, email or review). Nothing is sent to the customer.

Your usefulapi plan · 4

Usage status (free-tier meter)invoiced_usage_status
Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter.
Request a missing featureinvoiced_request_feature
Tell usefulapi that the user needs something the Invoiced tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter.
Upgrade to Pro or Pro+invoiced_upgrade
Get a paid plan for Invoiced (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter.
Cancel the Pro subscriptioninvoiced_cancel_subscription
Cancel the caller's Invoiced Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run invoiced_upgrade later to undo the cancel before the period ends. Does not count against the meter.

FAQ

What can I do with Invoiced in Claude or ChatGPT?

Find past-due invoices and what each customer owes. Check one customer's balance and contacts. Review the payments you received. Review subscriptions and plans. Create a customer or a draft invoice. Add a collection note or task. See what you can do for the details.

Is this an official Invoiced product?

No. usefulapi is an independent service. It is not affiliated with or endorsed by Invoiced. The server calls the Invoiced API with your own Invoiced access, so it sees only the data that your account can see.

Can I connect Invoiced to Claude or ChatGPT?

Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.

What do I need to connect?

The login page asks for your Invoiced API key and Environment. See Before you connect for where to find them.

Do I put my Invoiced key or an Authorization header in the client config?

No. 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: the login page asks for your Invoiced API key and Environment. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

How do you keep my Invoiced credentials?

The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Invoiced API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Invoiced.

Can the AI change my Invoiced data?

Yes, if you approve it. 4 of the 27 Invoiced tools can create or change data. The other 23 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.

What does it cost?

The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Invoiced server only. Cancel any time: your paid plan then runs to the end of the paid period. Run invoiced_usage_status to see how many calls you used.

How do I subscribe or cancel?

Ask the AI to run invoiced_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run invoiced_cancel_subscription. Your paid plan continues to the end of the paid period.

What if a Invoiced tool that I need is missing?

Tell the AI what you wanted to do. It can send the request with invoiced_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.

Which AI clients can I use?

Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.

This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.

Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.

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