The systems you already use.
Efficyon connects to the tools running your business — accounting, identity, billing, AI APIs — and watches the gap between spend and usage. Read-only on every connection, guaranteed in writing.
✦ Live connectors
4 integrations, growing every month.
Each connection is OAuth-only and scoped to GET requests. We can't write, modify, or delete anything in your accounts — that's contractual.
Fortnox ✦ live
Auto-import Fortnox invoices, categorize SaaS expenses, and surface optimization opportunities. Built for Swedish SMBs first — multi-currency, VAT-aware.
Accounting · Sweden · OAuth read-only
Stripe ✦ live
Analyze every Stripe-billed subscription, track payment trends, and catch billing anomalies before they hit your books.
Billing · Global · OAuth read-only
QuickBooks ✦ live
Auto-categorize and analyze your SaaS subscriptions alongside your full QuickBooks ledger. Real-time sync, no exports.
Accounting · US/CA · OAuth read-only
Xero ✦ live
Complete visibility into SaaS spend through Xero. Multi-currency, multi-org, with department-level analysis.
Accounting · UK/AU/NZ · OAuth read-only
✦ Shipping next
Already on the path.
Backend support exists or is in active rollout. Landing pages and setup docs ship as each integration goes generally available.
Visma eEkonomi
SoonVisma at Fortnox parity — invoices, suppliers, customers. Multi-currency. The other half of the Swedish SMB market.
Accounting · Sweden · OAuth read-only
Microsoft 365
SoonPer-license activity for Business Basic, Standard, Premium, E3, E5. Surfaces dormant seats and overprovisioned tiers.
Productivity · Identity · Graph API
Google Workspace
SoonUser activity, license assignments, and storage usage across Workspace tiers. Pinpoint who's actually using what.
Productivity · Identity · OAuth
HubSpot
SoonSeat usage, last-active dates, paid feature utilization. Spot Enterprise-tier features being used at Starter intensity.
Sales · Marketing · OAuth
Shopify
SoonApp-by-app spend audit on your Shopify install. Catch the 14 apps from 2023 that nobody uses but everybody pays for.
E-commerce · OAuth
Asana
SoonPer-seat activity, project counts, paid feature usage. Identify Business-tier seats living a Premium-tier life.
Project mgmt · OAuth
Airtable
SoonWorkspace utilization, base activity, and seat-level usage. Common waste pattern: Pro seats for read-only viewers.
Database · OAuth + PKCE
OpenAI / Anthropic / Gemini
SoonAPI consumption analysis across all three frontier AI labs. Token spend per project, model choice efficiency, and burn-rate forecasting.
AI APIs · admin keys
✦ Get started
Don't see your stack? Tell us — we ship monthly.
We add at least one new integration every month, prioritized by what current and trial users actually need. Drop us a line and your tool may be next.