Fastbill Data Integration | Invoice & Finance Insights
Connect FastBill and let AI agents query invoice details, payment status, and subscription metrics alongside ad spend from 1,000+ sources.
Key Takeaways Connect FastBill with zero-code integration
Improvado connects directly to FastBill's API to extract your complete invoicing and customer dataset. Our platform automatically pulls invoice details, payment status, customer information, and subscription metrics on your preferred schedule. Data flows continuously from FastBill to your chosen destination without manual intervention. Set up takes minutes, not weeks of development time.
Unified financial data across all platforms
FastBill data integrates seamlessly with your other business systems through Improvado's Marketing Common Data Model. Invoice metrics align with CRM data, marketing spend, and revenue analytics for complete business visibility. Compare FastBill payment cycles against campaign performance or customer acquisition costs. Build comprehensive dashboards that connect billing data with marketing attribution and sales metrics.
Data objects and fields Improvado extracts from Fastbill
| Object | Fields |
|---|---|
| Invoices | invoice_number customer_id total paid_date status currency_code |
| Customers | customer_id customer_number organization email country_code created |
| Revenues | invoice_id customer_id total vat_total currency_code paid_date |
| Expenses | expense_id category amount currency_code date description |
| Subscriptions | subscription_id customer_id article_number quantity status next_event |
From connection to autonomous action in three steps
Connect
Connect your Fastbill account via API key from your Fastbill settings panel. The agent authenticates once and maintains secure access to invoicing, client records, and payment data across all connected entities.
Ask
Ask questions like 'Which invoices are overdue this quarter?' or 'What is my average payment collection time by client?' The agent queries invoice status, payment history, client balances, and revenue metrics in natural language.
Act
The agent creates invoices, sends payment reminders, updates client records, applies payments to outstanding balances, generates recurring billing schedules, and flags clients exceeding credit limits.
What teams ask their AI agent about Fastbill
Real prompts from enterprise marketing teams. The agent reads your data, answers in seconds, and takes action when you ask.
Combine FastBill revenue data with Google Ads spend for accurate ROAS calculations
Your AI agent analyzes Fastbill data and delivers actionable insights — automatically, in seconds.
Track customer lifetime value by connecting FastBill invoices with CRM data
Your AI agent analyzes Fastbill data and delivers actionable insights — automatically, in seconds.
Generate executive revenue reports combining FastBill with all marketing channels
Your AI agent analyzes Fastbill data and delivers actionable insights — automatically, in seconds.
Your agent doesn't just read FastBill — it calculates true customer profitability
Read
The agent reads invoice data including amounts, due dates, payment status, client information, line items, tax calculations, payment terms, outstanding balances, and transaction history from your Fastbill account.
Write
The agent creates new invoices, updates existing invoice details, sends automated payment reminders, records payments, generates recurring invoice schedules, updates client billing information, and applies credits to customer accounts.
Monitor
The agent monitors invoice aging beyond payment terms, tracks collection rates by client, watches for payment pattern changes, flags clients approaching credit limits, and alerts on unusual payment delays or disputed invoices.
The AI agent queries invoice data, payment status, and customer subscription metrics from FastBill. It automatically calculates ROAS by comparing revenue against ad spend, tracks customer lifetime value across payment cycles, and answers questions like 'which marketing channels drive customers with the highest invoice values?'
| Client | Overdue Amount | Days Overdue |
|---|---|---|
| Alpine Logistics GmbH | €8,450 | 62 days |
| Nordic Transport AS | €6,720 | 48 days |
| Baltic Freight Ltd | €5,900 | 71 days |
| Continental Shipping Co | €4,380 | 35 days |
| Eastern Express Sp. z o.o. | €3,890 | 53 days |
Send Fastbill data anywhere
Load normalized data to your preferred warehouse, BI tool, or cloud storage. Click any destination to see its integration guide.
They extract data. Improvado deploys an agent.
Traditional tools move data from A to B. Improvado gives you an AI agent that reads, acts, and monitors — with Fastbill as one of 1,000+ integrated sources.
| Feature | Improvado | Supermetrics | Funnel.io | Fivetran |
|---|---|---|---|---|
| Data fields extracted | 200+ | ~90 | ~120 | ~80 |
| Total integrations | 1,000+ | ~150 | ~500 | ~300 |
| Cross-channel normalization (CDM) | ✓ Built-in | ✗ Manual | ● Basic mapping | ✗ Raw only |
| AI Agent access (MCP) | ✓ Read, Write, Monitor | ✗ | ✗ | ✗ |
| Data warehouse destinations | ✓ 16+ warehouses & BI tools | Sheets, Looker, BigQuery | BigQuery, Snowflake, Redshift | ✓ Broad warehouse support |
| Refresh frequency | Every 15 min | Scheduled triggers | Daily / 6hr | Every 15 min (premium) |
| SOC 2 Type II & HIPAA | ✓ | ✗ SOC 2 only | ✓ SOC 2 | ✓ |
| Best for | Teams that want an AI agent, not a pipeline | Small teams, spreadsheets | Mid-market, data teams | Engineering-led ELT pipelines |
Comparison based on publicly available documentation as of April 2026. Feature availability may vary by plan tier.
Frequently asked questions
What FastBill data does Improvado extract?
How often does FastBill data sync with my warehouse?
Can I combine FastBill data with other platforms?
Does this integration require FastBill API access?
Where can I send FastBill data?
How much historical FastBill data can I import?
"Improvado saves about 90 hours per week and allows us to focus on data analysis."
"Improvado's reporting tool effortlessly integrates all our marketing data so we can easily track users across their entire digital journey. This saves me and my team countless hours."
Put an AI agent on your Fastbill today
Connect in under 5 minutes. Your agent starts reading, acting, and monitoring immediately.