Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the A-Cube connector, then ask in plain words. The AI picks the tools.
For accounting teams with licensed A-Cube Italy API access.
Find invoices and read their SDI acceptance or rejection notifications.
Find receipts for a selected business and inspect a chosen receipt.
Check supplied invoice content without saving or transmitting it.
Save invoice content as a draft without sending it to the SDI.
Changes dataPreview the selected draft, then submit only with explicit confirmation. Acceptance does not prove SDI delivery and vendor charges may apply.
Changes dataThe login page asks for your A-Cube account email, A-Cube account password and Environment.
Use your authorized A-Cube API account and choose sandbox or production. Production Italy API access must already be enabled and permit this hosted connection under your vendor contract; vendor charges are separate. Your password is sent to A-Cube only for this login and is not stored. We retain only the encrypted vendor JWT, valid for up to24hours; reconnect when it expires or is revoked. Requested fiscal invoices, tax identifiers and receipts reach your connected AI client/provider. Connect only data you are authorized to process there. Production draft submission is a legal act and may be billed; it requires explicit confirmation. A-Cube acceptance does not prove SDI delivery: inspect invoice notifications. No operation is automatically replayed; check A-Cube after an uncertain write. Disconnect UsefulAPI to stop this connection; an issued JWT may remain valid until vendor expiry or revocation.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"acube": {
"url": "https://acube.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"acube": {
"type": "http",
"url": "https://acube.usefulapi.io/mcp"
}
}
} Run these commands. The second one opens the login page:
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.
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 A-Cube account email, A-Cube account password 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.
| Plan | Price | Limit |
|---|---|---|
| Freeper A-Cube account | $0 | 50 tool calls / month |
| Proper A-Cube account | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per A-Cube account | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this A-Cube server only. Ask your AI to run acube_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 acube_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 acube_upgrade before then undoes the cancel. Or write to [email protected].
acube_list_invoicesacube_get_invoiceacube_list_invoice_notificationsacube_get_notificationacube_get_invoice_statsacube_list_draft_invoicesacube_get_draft_invoiceacube_validate_invoiceacube_list_receiptsacube_get_receiptacube_get_receipt_detailsacube_list_business_registry_configurationsacube_get_business_registry_configurationacube_list_webhooksacube_list_numbering_sequencesacube_get_current_numbering_sequenceacube_list_jobsacube_get_jobacube_verify_fiscal_idacube_verify_companyacube_get_recipient_codeacube_create_draft_invoiceacube_send_draft_invoiceacube_delete_draft_invoiceacube_usage_statusacube_request_featureacube_upgradeacube_cancel_subscriptionReview invoice delivery. Review electronic receipts. Validate an invoice draft. Prepare an agreed draft. Submit an approved draft. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by A-Cube. The server calls the A-Cube API with your own A-Cube access, so it sees only the data that your account can see.
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.
The login page asks for your A-Cube account email, A-Cube account password and Environment. See Before you connect for where to find them.
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 A-Cube account email, A-Cube account password 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.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the A-Cube 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 A-Cube.
Yes, if you approve it. 3 of the 24 A-Cube tools can create or change data. The other 21 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
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 A-Cube server only. Cancel any time: your paid plan then runs to the end of the paid period. Run acube_usage_status to see how many calls you used.
Ask the AI to run acube_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 acube_cancel_subscription. Your paid plan continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with acube_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.
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.