Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://acube.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http acube https://acube.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"acube": {
"url": "https://acube.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": {
"acube": {
"type": "http",
"url": "https://acube.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://acube.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.
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.
acube_list_invoicesSent and received Italian e-invoices (SDI) of the account: uuid, invoice number and date, document type (TD01...), sender and recipient, amounts, marking and notification status. Filter by date, number, document type, party name or VAT number. GET /invoices.
acube_get_invoiceOne invoice by uuid: metadata plus the FatturaPA JSON payload (parties, lines, VAT, payment), or the XML file sent to the SDI. GET /invoices/{uuid}.
acube_list_invoice_notificationsThe SDI notifications of one invoice (delivery receipt RC, rejection NS, outcome NE, failed delivery MC, deadline expiry DT...), with their type, date and status: how you tell whether an invoice was delivered or rejected. GET /invoices/{uuid}/notifications.
acube_get_notificationOne SDI notification by uuid, with its payload. GET /notifications/{uuid}.
acube_get_invoice_statsCounters of invoices and notifications for a year (annual; monthly or daily detail only if A-Cube activated it), for the whole account or one fiscal id. GET /invoices/stats/{year}.
acube_list_draft_invoicesDraft invoices that were created but not yet sent to the SDI. Same filters as acube_list_invoices. GET /invoices/draft.
acube_get_draft_invoiceOne draft invoice by uuid, with its FatturaPA JSON content. GET /invoices/draft/{uuid}.
acube_validate_invoiceChecks an invoice against the FatturaPA rules without creating or sending anything; returns the validation result or A-Cube's errors. POST /invoices/validate.
acube_create_draft_invoiceWRITE: saves a new invoice as a DRAFT in A-Cube. Nothing is sent to the SDI until acube_send_draft_invoice. Not idempotent: calling it twice creates two drafts. Validate first with acube_validate_invoice. POST /invoices/draft.
acube_send_draft_invoiceWRITE: accepts a draft and transmits it to the Sistema di Interscambio. This is a legal act: a sent e-invoice cannot be recalled (only corrected with a credit note) and may be billed by A-Cube. Without confirm: true it only returns the draft for review. Show the draft to the user
acube_delete_draft_invoiceWRITE: permanently deletes a draft invoice (a draft only: a sent invoice answers 409). Without confirm: true it only returns the draft. DELETE /invoices/draft/{uuid}.
acube_list_receiptsElectronic commercial receipts (scontrini) with number, date, status, type (sale, void, return) and totals. GET /receipts.
acube_get_receiptOne electronic receipt by uuid: type, status, number, date, total and links to voiding or returned receipts (no line items: use acube_get_receipt_details). GET /receipts/{uuid}.
acube_get_receipt_detailsThe line items and VAT, discount and taxable totals of one electronic receipt. GET /receipts/{uuid}/details.
acube_list_business_registry_configurationsThe businesses (fiscal ids) set up on the account, with which services are on: customer invoices, supplier invoices, receipts, signature, legal storage. GET /business-registry-configurations.
acube_get_business_registry_configurationOne business by fiscal id: name, email, enabled services and its webhook configurations. GET /business-registry-configurations/{fiscalId}.
acube_list_webhooksThe webhooks (events and target URLs) configured on the account. Authentication keys and tokens are never returned. GET /api-configurations.
acube_list_numbering_sequencesThe invoice numbering sequences (name, year, last number). GET /numbering-sequences.
acube_get_current_numbering_sequenceThe sequence now in use for a sequence name. Its number is the LAST number used: the next invoice gets that number plus one. GET /numbering-sequences/current/{name}.
acube_list_jobsBackground jobs (invoice, report and zip downloads, F24 and daily receipt report downloads) with status ready, started, completed or error. GET /jobs.
acube_get_jobOne background job by uuid with its status and result. GET /jobs/{uuid}.
acube_verify_fiscal_idChecks whether a codice fiscale or partita IVA is valid. GET /verify/fiscal-id/{id}.
acube_verify_companyBasic registry data of an Italian company by VAT number (name, address, status), optionally with the split-payment check. GET /verify/company/{id}.
acube_get_recipient_codeThe account's 7-character SDI recipient code (codice destinatario), the address customers put on invoices they send to you. GET /users/me/recipient-code.
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
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 4 ms (HTTP 200)
No sign-in needed
Read 24 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 (1.7.3) reached the registry yesterday.
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: Spec Driven Development, Remote Desktop Commander, FOGA node
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
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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.
https://acube.usefulapi.io/mcp.claude mcp add --transport http acube https://acube.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "acube": { "url": "https://acube.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 A-Cube credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/acube/
| Tool | Type | What it does |
|---|---|---|
acube_list_invoices | read | List invoices |
acube_get_invoice | read | Get an invoice |
acube_list_invoice_notifications | read | List an invoice's SDI notifications |
acube_get_notification | read | Get an SDI notification |
acube_get_invoice_stats | read | Get invoice statistics |
acube_list_draft_invoices | read | List draft invoices |
acube_get_draft_invoice | read | Get a draft invoice |
acube_validate_invoice | read | Validate an invoice (no save) |
acube_create_draft_invoice | write | Create a draft invoice |
acube_send_draft_invoice | write | Send a draft invoice to the SDI |
acube_delete_draft_invoice | write | Delete a draft invoice |
acube_list_receipts | read | List electronic receipts |
acube_get_receipt | read | Get an electronic receipt |
acube_get_receipt_details | read | Get electronic receipt details |
acube_list_business_registry_configurations | read | List business registry configurations |
acube_get_business_registry_configuration | read | Get a business registry configuration |
acube_list_webhooks | read | List webhook configurations |
acube_list_numbering_sequences | read | List numbering sequences |
acube_get_current_numbering_sequence | read | Get the current numbering sequence |
acube_list_jobs | read | List background jobs |
acube_get_job | read | Get a background job |
acube_verify_fiscal_id | read | Check a fiscal id |
acube_verify_company | read | Look up an Italian company |
acube_get_recipient_code | read | Get the SDI recipient code |
acube_usage_status | meta | Usage status (free-tier meter) |
acube_request_feature | meta | Request a missing feature |
acube_upgrade | meta | Upgrade to Pro or Pro+ |
acube_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 (per A-Cube account) | $0 | 50 tool calls / month |
| Pro (per A-Cube 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 acube_upgrade (it returns a Stripe Checkout link). Cancel any time with acube_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running acube_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT
Use your licensed A-Cube API account and select sandbox or production. Your production Italy API contract must permit this hosted connection. Customer onboarding, vendor subscriptions and fiscal processing charges remain separate. No vendor app approval or endorsement is claimed.
Your password is sent only for this sign-in and is not stored in the hosted connection. Only the vendor JWT, email, environment, expiry and billing identity are retained encrypted. Vendor tokens last up to24hours; reconnect on expiry or revocation. There is no silent password login or invented refresh endpoint. Disconnect UsefulAPI to stop this connection; an issued JWT may remain valid until A-Cube expires or revokes it. Billing follows the validated account UID, normally across password changes and environments.
Requested fiscal invoices, tax identifiers, receipts and business records reach your connected AI client and LLM provider. Connect only data you are authorized to process there.
Draft creation saves a draft without transmission. Submission and deletion require explicit confirmation; without it, the tools return a preview. Production submission is a legal act and may incur charges. A-Cube's acknowledgement means accepted for transmission, not confirmed SDI delivery: check invoice notifications. After an uncertain result, check A-Cube before repeating. No operation is automatically replayed.
All24tools were checked against current API specifications and local mocks. Synthetic invoice test data matches required fields/types but is not a legally validated invoice. No real customer data, SDI submissions, receipts or charges were tested.