Invoicenow Sg MCP server

by cmendezs·io.github.cmendezs/mcp-invoicenow-sg·v0.3.3

MCP server for Singapore electronic invoicing (InvoiceNow)

A92/100grade A

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A92/100

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If you have run it, two minutes of your experience saves the next person an afternoon.

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

generate_invoice_sg
Build an SGInvoice from structured data and serialize it to UBL 2.1 XML.
get_gst_category_codes_sg
Return the IRAS GST category codes accepted on Singapore invoices.
get_profile_urn_sg
Return the CustomizationID (BT-24) and ProfileID (BT-23) for a Singapore profile.
validate_invoice_sg
Validate a UBL 2.1 XML invoice against IRAS's C5 acceptance-layer Schematron.

scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it

no findings

Code scan16 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 7 days ago15/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

claude mcp add mcp-invoicenow-sg -- uvx mcp-invoicenow-sg

Is Invoicenow Sg MCP server safe?: Yes, by our scan: it is graded A (92/100). Read the Invoicenow Sg safety report
How do I install Invoicenow Sg?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Invoicenow Sg need an API key?: No secret keys are declared. It reads 1 setting from the environment.
Is Invoicenow Sg maintained?: The last commit was 9 days ago (2026-09-12). The latest release is v0.3.3.