Changelog

Documentation Index

Fetch the complete documentation index at: https://docs.arcuserp.com/llms.txt

Use this file to discover all available pages before exploring further.

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2026-05-01 (current)

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New resources

• Accounts — GET/POST/PATCH/DELETE /v1/accounts
• Orders — GET/POST/PATCH/DELETE /v1/orders (quotes, sales orders, invoices, purchase orders, returns)
• Products — GET/POST/PATCH/DELETE /v1/products
• Inventory — GET/POST /v1/inventory (balances, transactions, adjustments)
• Fulfillment — GET/POST/PATCH /v1/fulfillment (packages, labels, shipments)
• Returns — GET/POST/PATCH /v1/returns
• Purchasing — GET/POST/PATCH /v1/purchase-orders
• Payments — GET/POST /v1/payments
• Accounting — GET/POST /v1/accounting (GL accounts, journal entries)
• Master data — Locations, Payment Terms, Units of Measure, Sales Channels, Pricing Levels, Product Categories, Tags
• Integrations — GET/PATCH /v1/integrations (connector configuration, read-only credential status)
• Webhooks — GET/POST/PATCH/DELETE /v1/webhooks
• Activity — GET /v1/activity (audit log)
• Migration — GET/POST /v1/migrations (bulk import jobs)

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New capabilities

• Cursor pagination on all list endpoints
• Expand (?expand[]=) — Stripe-style related-resource hydration, depth 4, 10 paths max
• Idempotency (Idempotency-Key header) — 24-hour replay window
• Versioning (Arcus-Version header) — date-based version pinning
• Conditional requests (ETag/If-None-Match) — 304 Not Modified support
• Sparse fieldsets (?fields=) — reduce response payload size
• Rate limiting — per-key sliding window, standard 300 req/min
• Webhook signatures (HMAC-SHA256, Arcus-Signature header)
• Sunset headers on deprecated endpoints