Everything you need for compliant invoicing
From API and SDK to multi-tenancy and global compliance. Built for developers, designed for scale.
API & Developer Experience
Built for developers who value great documentation, type safety, and modern tooling.
REST API with OpenAPI 3.1
Complete REST API with full OpenAPI specification. Every endpoint documented with examples.
TypeScript SDK
Auto-generated SDK with full type safety. Async iterators for pagination. Tree-shakeable for smaller bundles.
API Explorer
Try the API directly in your browser. No setup required. Inspect endpoints, schemas, and examples before integrating.
Sandbox Environment
Test your integration without consequences. Separate API keys for sandbox and live. Same features in both environments.
Copy-Paste UI Components
React components you can copy into your project. Full ownership. Modify freely without breaking changes.
Comprehensive Documentation
Quickstart guides, API reference, examples, and tutorials. Everything you need to integrate fast.
Zapier Workflow Integration
Connect no-code workflows to invoice, estimate, and document email actions without building custom glue first.
Multi-Tenancy & White-Label
Enable your customers to issue invoices from within your product. Like Stripe Connect, but for invoicing.
Entity Isolation
Each entity gets their own isolated space. Data never mixes. Full security between tenants.
Custom Branding
Upload logos, set colors, customize settings per entity. Your customers see their brand, not yours.
Custom Numbering
Each entity can have their own document numbering sequence. Fully configurable formats.
Per-Entity Settings
Currency, language, tax settings, compliance modules - all configurable per entity.
Scoped API Keys
Generate API keys per environment (sandbox/live). Full isolation between test and production data.
Accountant Mode
Manage multiple clients from a single account. Switch between entities seamlessly.
Business Units
Model branches, brands, or operating units inside one entity with their own addresses, defaults, and document identity.
Independent Numbering
Keep main-entity and business-unit document sequences independent, with configurable formats and starting numbers.
Global Compliance
EU e-invoicing, VIES validation, reverse charge. We handle the tax complexity so you can focus on your product.
VIES Validation
Automatic EU VAT number validation. Real-time checks against the official VIES database. Detect B2B vs B2C transactions.
Reverse Charge
Automatic reverse charge detection for EU cross-border B2B. Correct VAT handling without manual intervention.
EU E-Invoicing
Real-time fiscalization, e-invoice XML formats, payment QR codes. EU ViDA ready. Multiple countries live, more coming.
Multi-Currency Support
170+ currencies. Automatic formatting. Currency conversion support. ISO 4217 standard.
Multi-Language Documents
Multiple languages for documents. Locale-aware formatting. BCP 47 language tags.
Tax Calculations
Multi-rate tax per line item. Inclusive and exclusive pricing. Automatic rounding and totals.
Recipient Discovery
Check whether a customer can receive electronic invoices through supported networks before attempting delivery.
Generate, Send & Track
Generate structured invoice data, submit it for delivery, follow submission status, inspect failures, and retry when appropriate.
Format-Aware Validation
Validate the document data required by supported UBL, CII, EN 16931, and country-profile outputs before export or sending.
White-Label Web App
Not just APIs. Get a full embeddable web application your customers can use directly. Remove our branding, add yours.
Full Dashboard
Revenue overview, recent documents, customer stats. Your customers get a complete invoicing dashboard out of the box.
Document CRUD with Live PDF Preview
Create, edit, and manage invoices, estimates, and credit notes. Real-time PDF preview as you type.
Customer & Item Management
Searchable customer database and product catalog. Auto-populate invoices from saved data.
Settings & Configuration
Entity settings, branding, numbering formats, tax configuration. Your customers manage everything themselves.
18 UI languages
Use any of the supported interface locales, with a preferred language configured for each entity.
Removable Branding
Hide Space Invoices branding entirely. Your customers see your brand, not ours. Magic link SSO for seamless access.
Document Management
Everything you need to create, manage, and deliver professional invoices.
Multiple Document Types
Invoices, estimates, credit notes. All with consistent APIs and workflows.
Draft/Finalize Workflow
Create drafts, preview, then finalize. Prevents accidental issuance. Locked after finalization.
Custom Numbering
Configure your own document number formats. Sequential by year, by entity, or custom patterns.
Line Item Management
Add products, services, discounts. Automatic calculations. Multi-rate taxes per line.
Public Sharing Links
Generate shareable links for customers. No login required. Perfect for self-service.
PDF Generation
Professional PDF output. Multiple templates. Custom branding. Print-ready.
Complete Document Family
Use invoices, estimates, pro forma variants, advance invoices, delivery notes, and credit notes through consistent APIs and UI workflows.
Linked Document Flows
Convert estimates, allocate advances, copy delivery notes into invoices, and preserve source-document references throughout the lifecycle.
Corrections & Version History
Void, restore, and correct documents while retaining immutable issued output, version history, and an auditable relationship trail.
Operations & Reporting
Turn issued documents into useful operational reporting without replacing your accounting system.
Financial Categories
Classify saved items and document lines for consistent revenue reporting without forcing categories into the invoice calculation model.
Revenue By Category
Report accrued net revenue by financial category, including invoices, standalone advances, and credit-note adjustments.
Revenue Recognition
Optionally spread eligible service-period revenue across calendar months and review recognized and deferred revenue schedules.
Accounting-Ready Exports
Export document, tax, payment, related-document, and sales-per-item data with currency-aware totals and country modules where available.
Localized Delivery & Output
Keep customer-facing language, currency, branding, and delivery behavior correct across markets.
Translated Catalog Content
Store translated item names and descriptions so customer-facing documents can use the right content for their audience.
Document-Locale Control
Keep app language separate from document output and choose the PDF, email, share-link, or export language per action when needed.
Localized Delivery Workflows
Maintain translated email defaults and payment reminders while preserving entity branding and document-facing locale rules.
Currency-Aware Output
Show converted tax breakdowns and grand totals in the entity currency while keeping the original document currency visible.
Structured Notes & Terms
Use a safe Markdown subset for notes, payment terms, tax clauses, footers, signatures, and line-item descriptions.
Business-Unit Identity
Render business-unit names and addresses without replacing the legal issuer information that belongs to the entity.
Multi-Recipient Delivery
Send localized document emails to multiple recipients with optional PDF, structured invoice, and share-link delivery.
Production Control
Give engineering and support teams the evidence they need when automated invoicing runs in production.
Request Tracing
Inspect API request logs with resource, status, actor, and API-key context when a production workflow needs investigation.
Webhook Operations
Test endpoints, inspect delivery attempts, rotate secrets, and separate account-level platform events from entity document events.
Idempotent Workflows
Use stable request and source-event identifiers to prevent duplicate document, payment, order, and refund side effects.
Activity & Version History
Trace who changed a resource, how documents evolved, and which external events drove automated transitions.
Create with live preview
Build professional invoices with our split-screen editor. See your PDF update in real-time as you type.
- Real-time PDF preview
- Auto-calculated taxes
- Draft to Finalize workflow
- Multi-currency support
Invoices
| NUMBER | CUSTOMER | DATE | TOTAL | STATUS |
|---|---|---|---|---|
| INV-2024-0143 | AC Nova Consulting | Dec 15, 2024 | 3,782.00 | PAID |
| INV-2024-0142 | TI Tech Industries | Dec 12, 2024 | 1,850.00 | PENDING |
| INV-2024-0141 | GS Global Systems | Dec 10, 2024 | 4,200.00 | PAID |
| INV-2024-0140 | NE Nova Enterprise | Dec 08, 2024 | 2,150.00 | DRAFT |
Organize and track
Manage all your documents in one place. Filter, sort, and take action on invoices, estimates, and credit notes.
- Multiple document types
- Status tracking
- Quick actions menu
- PDF download
Start with one workflow, not a whole rewrite
Free sandbox with no time limit. Prove one entity and one invoice flow before deciding how much UI, compliance, and rollout surface you want to own.