Built by a Developer, for Developers: Why PSRESTful Is the Fastest Path to PromoStandards Integrations

PSRESTful wasn't designed in a product meeting. It was built by a developer who spent years wiring PromoStandards integrations by hand: crafting SOAP envelopes, hunting down the right namespace for each service version, and parsing megabytes of XML just to answer "how many blue mugs are in stock?" Every feature on the platform exists because that pain was real. This post walks through what "developer-first" actually means in practice: the choices in the API itself, the tools around it, and the open-source pieces you can read and reuse. All of it serves one goal: getting your supplier integration to production in days, not months . REST/JSON instead of SOAP/XML PromoStandards is a great idea: one standard instead of dozens of proprietary supplier APIs. But the transport it standardized on is SOAP/XML. In 2026, that means WSDLs, envelopes, namespaces, and hand-rolled XML parsing in ecosystems that stopped shipping good SOAP tooling a decade ago. PSRESTful puts a clean REST/JSON layer over every PromoStandards service: Product Data, Media Content, Pricing & Configuration (PPC), Inventory, Purchase Orders, Order Status, Shipment Notifications, and Invoices. Every endpoint follows a predictable, versioned URL pattern: curl -H "x-api-key: YOUR_API_KEY" \ "https://api.psrestful.com/v2.0.0/suppliers/{SUPPLIER_CODE}/inventory/{PRODUCT_ID}" You write the code once, and it works across every supplier. The payoff isn't just ergonomics: when we measured the move from XML to JSON , payloads shrank by 35–53%. And because everything is OpenAPI-based, you get an interactive API reference where every endpoint is documented and try-able. Protobuf, because JSON is sometimes still too heavy For most integrations JSON is plenty. But if you're syncing inventory and pricing across hundreds of suppliers, Product Pricing & Configuration responses can run into hundreds of kilobytes per product, and you're making thousands of calls per hour. That's why PSRESTful also serves Protocol Buffers ,