POSIM API
A working integration API exists; it powers the eCommerce Linker sync to Shopify and Adobe Commerce, and shops like BevSites build against it. Nothing is publicly documented: no portal, no REST reference, no auth spec. Integrators work directly with POSIM and pay for the Linker module.
Frequently asked questions
POSIM scores C on the API Report Card. A working integration API exists; it powers the eCommerce Linker sync to Shopify and Adobe Commerce, and shops like BevSites build against it. Nothing is publicly documented: no portal, no REST reference, no auth spec. Integrators work directly with POSIM and pay for the Linker module.
POSIM has an official API, but teams routinely hit its limits: gated access, partial coverage, or paid tiers. Most end up supplementing it with exports or an unofficial API layer like Supergood.
POSIM is a retail point-of-sale and inventory-management platform sold under the POSIM EVO product name.
Specialty brick-and-mortar retail, single store and small chains. A store clerk rings sales at a Windows-based POSIM EVO terminal; a back-office user manages purchase orders, receiving, label printing, matrix/serialized inventory, customer records, loyalty, gift cards and reporting from the same client.
Low-mid. POSIM holds roughly 4.3/5 across ~50 verified Capterra reviews and a similar small footprint on G2, Software Advice, GetApp and SourceForge.
Company: POSIM (POS-IM); founded 1986 by Scott Maher; headquartered in Overland Park, Kansas (relocated from Utah after acquisition). Product: POSIM EVO, Windows-based POS with hosted database, iOS mobile POS, eCommerce Linker.
Founded in 1986 by Scott Maher; the product line evolved through several rewrites into the current POSIM EVO. The company has been in market for ~40 years and was recognized in CIOReview's '20 Most Promising Retail Tech Solution Providers' (2013).
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial POSIM API and MCP server so AI agents and internal tools can read and write POSIM data. See the POSIM integration docs at supergood.ai/docs/posim-api.