# 4R (4R Systems, Inc.) > 4R Systems, Inc. is a Berwyn, Pennsylvania software company founded in 1999 that sells a > cloud-based intelligent inventory optimization platform and planning service to retail > chains. Customers reach the platform through a hosted web portal and scheduled data > exchanges. As of 2026-09-05 4R publishes no public API, developer portal, SDK, webhook > catalog or machine-readable contract of any kind. ## Provenance - Generated: 2026-09-05 - Method: generated (no /llms.txt is served by the provider; https://4rsystems.com/llms.txt returned 404) - Source: https://4rsystems.com/ and this repository's apis.yml - Publisher of this file: API Evangelist (https://apievangelist.com) — this is a third-party profile, not a document served by 4R Systems. ## What 4R sells - Demand Planning — https://4rsystems.com/predictive-demand-planning/ - Replenishment Planning — https://4rsystems.com/replenishment-planning/ - Allocation Planning — https://4rsystems.com/allocation-planning/ - Assortment Optimization — https://4rsystems.com/assortment-optimization/ - Markdown Optimization — https://4rsystems.com/markdown-optimization/ - Vendor Order Optimization — https://4rsystems.com/vendor-order-optimization/ - Planning as a Service — https://4rsystems.com/paas/ Markets served: auto parts retailing, convenience retailing, fashion apparel and footwear, hardware/lumber/paint, home furnishings and furniture. ## Company - Website: https://4rsystems.com/ - About: https://4rsystems.com/company/ - Partners: https://4rsystems.com/partners/ - News: https://4rsystems.com/4r-news/ - Blog ("4R Insights"): https://4rsystems.com/blog/ (RSS: https://4rsystems.com/feed/) - Resource center: https://4rsystems.com/resource-center/ - Contact: https://4rsystems.com/contact-4r/ (optimize@4rsystems.com) - Customer portal (gated, Microsoft identity sign-in): https://portal.4rsystems.com/ - Privacy policy: https://4rsystems.com/4r-privacy-policy/ - LinkedIn: https://www.linkedin.com/company/4r-systems - Headquarters: Berwyn / Southeastern, Pennsylvania, United States - Founded: 1999 ## API surface None found. The following were probed on 4rsystems.com, www.4rsystems.com, portal.4rsystems.com and login.4rsystems.com on 2026-09-05 and all returned 404: /openapi.json, /openapi.yaml, /swagger.json, /swagger/v1/swagger.json, /api-docs, /apis.json, /llms.txt, /.well-known/security.txt, /.well-known/openid-configuration, /.well-known/oauth-authorization-server, /.well-known/api-catalog, /.well-known/ai-plugin.json, /.well-known/agent-card.json, /.well-known/agent.json. There is no GitHub organization (api.github.com/orgs/4rsystems returned 404) and no first-party package on npm or PyPI. The only machine-readable endpoint the marketing site exposes is the stock WordPress REST API at https://4rsystems.com/wp-json/, which describes the website CMS and is not a 4R product API; it is deliberately not registered as one in this profile. Integration with 4R is documented publicly only as "data exchanges and web portal access" — file/feed based, arranged during implementation, with implementation and integration partners listed at https://4rsystems.com/partners/. ## For agents There is nothing here an agent can call. Do not infer an endpoint, base URL, key prefix or tool from this file. If 4R publishes a developer program, ask API Evangelist for a re-score at https://github.com/api-evangelist/4r/issues.