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The HeySheep ecosystem

One AI at the centre. A family around it.

Collie thinks and acts. HeyDocs keeps the record. HeyInvoice exchanges and complies. HeyShop sells. Each works on its own — together they carry a sale all the way to an e-invoice IRAS can receive.

thinks and acts

The AI at the centre: agents for every department that read, draft and route the work — a person approves what matters.

Explore Collie

keeps the record

Private document management: records that can't be changed, a full audit trail, OCR and AI on your own server.

Explore HeyDocs

exchanges and complies

InvoiceNow e-invoicing over Peppol, with invoice data reported to IRAS.

Explore HeyInvoice

sells

Your own online store for one fixed fee — no cut of your sales.

Explore HeyShop

How it connects

Everything connected.

Collie at the centre, the Hey family around it, your systems around them — and the lines between all of them.

Collie ↔ HeyInvoice — In progress. Collie drafts e-invoices from POs and a person approves before anything is sent. HeyInvoice's side is live.Collie ↔ HeyDocs — Roadmap. Collie finds and reads records with HeyDocs' own permissions. HeyDocs' AI-assistant connector is live today.Collie ↔ HeyShop — Roadmap. Collie's shop assistant on your HeyShop store: product questions, bundles, hand-over to your team.HeyShop ↔ HeyInvoice — Via API. Orders become InvoiceNow e-invoices through HeyInvoice's public API — wired in when we build your shop.HeyInvoice ↔ HeyDocs — Roadmap. E-invoices sent and received, filed into HeyDocs as records that can't be changed.Collie ↔ Email — Live. Reports and quotations go out through your mail server; reading a mailbox is next.Collie ↔ Website & bookings — Live. Customers ask, buy and book service slots on your website.Collie ↔ ERP · POS — Live. Approved bills, claims and pay sheets as a CSV your ERP imports.Collie ↔ Drive · M365 — Roadmap. Import and sync documents from Google Drive and Microsoft 365.Collie ↔ Xero · QuickBooks — Roadmap. Post approved bills and invoices to Xero or QuickBooks.Collie ↔ WhatsApp — Roadmap. Talk to your agents from chat.ERP · POS ↔ HeyInvoice — Live. ERP, POS and CRM send and receive e-invoices through the HeyInvoice public API and webhooks.Xero · QuickBooks ↔ HeyInvoice — Via API. Accounting packages connect through the HeyInvoice public API.HeyShop ↔ Payments — Via API. Your payment provider, connected when we build your shop.HeyShop ↔ ERP · POS — Via API. Stock, orders and customers synced with your ERP or POS.Active Directory ↔ HeyDocs — Live. Staff sign in to HeyDocs with their company accounts.HeyInvoice ↔ InvoiceNow · Peppol — Live. Invoices, credit notes and purchase orders over Peppol, through SESAMi, an IMDA-accredited Access Point.InvoiceNow · Peppol ↔ Customers & suppliers — Live. Any business on InvoiceNow receives your e-invoice straight into its own system.InvoiceNow · Peppol ↔ IRAS — Live. With GST InvoiceNow submission switched on, invoice data reaches IRAS through the Access Point with each invoice.Colliekeeps the recordexchanges and compliessellsEmailWebsite & bookingsDrive · M365WhatsAppERP · POSXero · QuickBooksPaymentsActive DirectoryPeppol · IMDA-accredited Access PointIRASGST InvoiceNowCustomers & suppliersCollie ↔ HeyInvoice — In progress. Collie drafts e-invoices from POs and a person approves before anything is sent. HeyInvoice's side is live.Collie ↔ HeyDocs — Roadmap. Collie finds and reads records with HeyDocs' own permissions. HeyDocs' AI-assistant connector is live today.Collie ↔ HeyShop — Roadmap. Collie's shop assistant on your HeyShop store: product questions, bundles, hand-over to your team.HeyShop ↔ HeyInvoice — Via API. Orders become InvoiceNow e-invoices through HeyInvoice's public API — wired in when we build your shop.HeyInvoice ↔ HeyDocs — Roadmap. E-invoices sent and received, filed into HeyDocs as records that can't be changed.Collie ↔ Email — Live. Reports and quotations go out through your mail server; reading a mailbox is next.Collie ↔ Website & bookings — Live. Customers ask, buy and book service slots on your website.Collie ↔ ERP · POS — Live. Approved bills, claims and pay sheets as a CSV your ERP imports.Collie ↔ Drive · M365 — Roadmap. Import and sync documents from Google Drive and Microsoft 365.Collie ↔ Xero · QuickBooks — Roadmap. Post approved bills and invoices to Xero or QuickBooks.Collie ↔ WhatsApp — Roadmap. Talk to your agents from chat.ERP · POS ↔ HeyInvoice — Live. ERP, POS and CRM send and receive e-invoices through the HeyInvoice public API and webhooks.Xero · QuickBooks ↔ HeyInvoice — Via API. Accounting packages connect through the HeyInvoice public API.HeyShop ↔ Payments — Via API. Your payment provider, connected when we build your shop.HeyShop ↔ ERP · POS — Via API. Stock, orders and customers synced with your ERP or POS.Active Directory ↔ HeyDocs — Live. Staff sign in to HeyDocs with their company accounts.HeyInvoice ↔ InvoiceNow · Peppol — Live. Invoices, credit notes and purchase orders over Peppol, through SESAMi, an IMDA-accredited Access Point.InvoiceNow · Peppol ↔ Customers & suppliers — Live. Any business on InvoiceNow receives your e-invoice straight into its own system.InvoiceNow · Peppol ↔ IRAS — Live. With GST InvoiceNow submission switched on, invoice data reaches IRAS through the Access Point with each invoice.CollieEmailWebsite & bookingsDrive · M365WhatsAppERP · POSXero · QuickBooksPaymentsActive DirectoryPeppol · IMDA-accredited Access PointIRASGST InvoiceNowCustomers & suppliers

Hover or tap any piece to see what it connects to.

  • Live
  • Via API
  • In progress
  • Planned

IMDA · InvoiceNow · IRAS

InvoiceNow-ready, from sale to IRAS.

HeyInvoice is the family's compliance hub. Whatever starts the sale — a HeyShop order, a PO Collie drafts, an invoice you raise — it leaves as a Peppol e-invoice that IRAS can receive.

  • IMDA runs InvoiceNow on Peppol. HeyInvoice sends through SESAMi, an IMDA-accredited Access Point; our own IRSP accreditation is in progress.

  • InvoiceNow is Singapore's e-invoicing network: invoices go system to system — no PDFs, no re-typing.

  • IRAS is phasing in GST InvoiceNow for GST-registered businesses, from November 2025 to 2031.

How a sale becomes compliant

  1. 01A sale or a purchaseAn order on HeyShop, a PO drafted by Collie, or an invoice raised in HeyInvoice.
  2. 02An e-invoiceHeyInvoice builds a Peppol e-invoice with a GST category on every line.
  3. 03Over InvoiceNowSent through SESAMi, an IMDA-accredited Access Point, into your customer's system.
  4. 04Reported to IRASWith GST InvoiceNow submission on, invoice data reaches IRAS with each invoice.
  5. 05 · RoadmapKept on recordFiled into HeyDocs as a record that can't be changed.

IMDA, InvoiceNow and IRAS names and logos belong to their owners. They are shown to describe the network and the requirement HeyInvoice works with — not as an endorsement of HeySheep.

FAQ

Questions, answered.

What is the HeySheep ecosystem?

Collie, our AI for every department, sits at the centre. Around it is the Hey family: HeyDocs for records, HeyInvoice for InvoiceNow e-invoicing and HeyShop for online stores. Each works on its own; connected, they pass work to each other — and a person approves what matters.

Do I need all four products?

No. Each product works on its own and with the systems you already run. Start with the one that removes the most manual work; the others connect when you're ready.

How does the ecosystem help with IRAS InvoiceNow?

HeyInvoice is the compliance hub. It sends and receives e-invoices over InvoiceNow through SESAMi, an IMDA-accredited Access Point, and with GST InvoiceNow submission switched on, invoice data reaches IRAS with each invoice. HeyShop orders feed it through its API; filing into HeyDocs is on the roadmap.

Why is the AI called Collie?

Every flock needs a collie. HeySheep makes the Hey family; Collie is the sheepdog that herds the work between them.

What do Live, Via API, In progress and Roadmap mean?

Live: built in and working today. Via API: works today through a live public API, and our engineers connect it for you. In progress: one side is live and the other is being built. Roadmap: planned, not yet built.

Start with one. Connect the rest.

Tell us where the manual work is. We'll show you which part of the family removes it first.

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