REST API Integration

The InventoryPro REST API gives your development team and integration partners direct access to inventory data, order processing, and warehouse operations. Query stock levels across warehouses, create purchase orders and sales orders, import items and customers, look up assets and work orders - all through standard HTTP requests returning JSON.

The API covers the core resource types your integrations are most likely to need: items, customers, vendors, purchase orders, sales orders, inventory lots with stock level summaries, assets, work orders, warehouse locations, categories, and a report execution endpoint that can run any of the 260+ reports in the system and return the results as structured data.

API access is secured with OAuth 2.0 using the client credentials grant type. Each integration receives a unique client ID and secret pair. Your application exchanges these credentials for a bearer token at the /Token endpoint, then includes that token in the Authorization header of subsequent requests. Tokens expire after four hours and must be refreshed.

All API traffic requires HTTPS - plaintext HTTP requests are rejected. Request rate limiting protects the system from excessive load, and every request is logged with the client identity, IP address, timestamp, and response status for operational visibility and troubleshooting.

The API provides read and write endpoints organized by resource type. Items, customers, and vendors support listing, lookup, creation, and updates. Purchase orders and sales orders can be listed with date-range filters, retrieved individually with full line-item detail, and created programmatically. The inventory endpoint exposes lot-level data, stock level summaries by warehouse, and a receiving endpoint for posting inbound inventory.

Additional endpoints cover assets (with asset type lookups), work orders, warehouse locations (including hold/release operations), categories, reason codes, and a report runner that executes any configured report and returns paginated results. Swagger documentation is built into the API for interactive endpoint exploration during development.

For requirements that go beyond the standard endpoints, our team builds custom API solutions. We have developed integrations for automated receiving workflows, e-commerce order sync, ERP data exchange, and specialized reporting feeds for clients with unique data exchange needs. Each custom solution is scoped, tested, and documented as part of the implementation.

REST API access is a separately licensed feature, ensuring that organizations pay only for the integration capabilities they need. Our team provides endpoint documentation and integration guidance during the scoping process, so your developers know exactly what is available before committing to a custom build.