Spiralway product
SIIMaster
The accountant agent: it operates Chile's tax authority (SII) with human approval, keeps SME books and issues electronic invoices.
SIIMaster is a Chilean multi-company SaaS for SME accounting and taxes, with a unique differentiator: an AI agent — exposed as an MCP server with over 280 tools — that reads from and writes to the SII with human approval at every step. It reads VAT returns (F29) and their observations, purchase/sales ledgers, income tax affidavits and fee invoices; files late-return SISPAs end to end; issues electronic tax documents (DTE); and keeps the full books. In production at siimaster.cl.
Key capabilities
- Live reading from the SII: F29 with observations (PPM, VAT, withholdings), purchase/sales ledger, income tax affidavits, fee invoices and tax profile
- Writing to the SII with human approval: end-to-end SISPA filing, fee invoice cancellation, DTE issuance with MIPYME folios or traditional CAF
- Full SME accounting: chart of accounts, automatic journal entries, ledgers, income statement, balance sheet, taxable income and F22
- AI agent via an MCP server with over 280 tools, operable from Claude and any MCP client
- Multi-company with per-entity encrypted archive, plans and invitations
- Chilean payments built in — Webpay, Khipu, Flow and Mercado Pago — and over 1,400 automated tests
Who it's for
Accountants and firms
Accounting firms managing client portfolios: each company is an isolated entity and the agent executes the repetitive work, leaving every approval in the accountant's hands.
SMEs and founders
Companies that want their F29, invoicing and books in one place, with an agent that warns before the SII flags anything.
Want to see it running?
Demo and quote within 24 business hours