4R Systems

4R (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. Its prescriptive-analytics products cover demand planning, replenishment planning, allocation planning, assortment optimization, markdown optimization and vendor order optimization, combining statistical and machine-learning forecasting with a managed "planning as a service" team. Customers reach the platform through a hosted web portal and scheduled data exchanges rather than a public developer API; 4R publishes no developer portal, documentation or machine-readable API contract on its public site.

4R Systems is profiled on the APIs.io network. Tagged areas include Company, Retail, Supply Chain, Inventory Optimization, and Demand Planning.

4R Systems’ developer surface includes engineering blog, support, YouTube channel, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
9.5/100 minimal ▬ flat Agent 0/100 human only Front door AI 3/6 light Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
0 APIs
CompanyRetailSupply ChainInventory OptimizationDemand PlanningAnalyticsArtificial IntelligenceSoftware-as-a-Service

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 9.5/100 · minimal
Contract Quality 0.0 / 21
Developer Ergonomics 1.2 / 17
Access Clarity 2.9 / 17
Operational Transparency 0.0 / 11
Contract Governance 0.0 / 10
Discoverability 4.8 / 9
Regulatory Posture 1.4 / 15
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/4r: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Pricing Plans 1

Published pricing tiers and plan structures.

4R Plans Pricing

0 plans

PLANS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

4R Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login
Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

YouTube
YouTube

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 7

The organization behind the API

Website
Website
 About
About
 Blog
Blog
 BlogRSS
BlogRSS
 Newsroom
Newsroom
 LinkedIn
LinkedIn
 Twitter
Twitter

Scroll for all 7

Source (apis.yml)

apis.yml Raw ↑ 
aid: 4r
name: 4R Systems
description: 4R (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. Its prescriptive-analytics products cover demand
  planning, replenishment planning, allocation planning, assortment optimization, markdown optimization and vendor order optimization,
  combining statistical and machine-learning forecasting with a managed "planning as a service" team. Customers reach the
  platform through a hosted web portal and scheduled data exchanges rather than a public developer API; 4R publishes no developer
  portal, documentation or machine-readable API contract on its public site.
url: https://raw.githubusercontent.com/api-evangelist/4r/refs/heads/main/apis.yml
image: https://4rsystems.com/wp-content/uploads/2021/11/cropped-4R-logo.png
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-09-05'
modified: '2026-09-05'
position: Producing
tags:
- Company
- Retail
- Supply Chain
- Inventory Optimization
- Demand Planning
- Analytics
- Artificial Intelligence
- Software-as-a-Service
tags_raw:
- Company
- Retail
- Supply Chain
- Inventory Optimization
- Demand Planning
- Analytics
- Artificial Intelligence
- SaaS
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://4rsystems.com/
- type: About
  url: https://4rsystems.com/company/
- type: Blog
  url: https://4rsystems.com/blog/
- type: BlogRSS
  url: https://4rsystems.com/feed/
- type: Newsroom
  url: https://4rsystems.com/4r-news/
- type: Support
  url: https://4rsystems.com/contact-4r/
- type: PrivacyPolicy
  url: https://4rsystems.com/4r-privacy-policy/
- type: LinkedIn
  url: https://www.linkedin.com/company/4r-systems
- type: Twitter
  url: https://twitter.com/4RSystems
- type: YouTube
  url: https://www.youtube.com/channel/UCKqhLIeu0tSVow0C0yr7dbA
- type: Login
  url: https://portal.4rsystems.com/
- type: Plans
  url: plans/4r-plans-pricing.yml
- type: LLMsTxt
  url: llms/4r-llms.txt
- type: DomainSecurity
  url: security/4r-domain-security.yml
x-enrichment:
  date: '2026-09-05'
  status: minimal
  artifacts_added: 4
  pass: local-v3
x-coverage:
  state: none
  reason: no-developer-program
  detail: 4R Systems sells a hosted retail inventory optimization platform whose only public surfaces are a WordPress marketing
    site and a Microsoft-identity customer portal at portal.4rsystems.com — the site never uses the word API, integration
    is described only as "data exchanges and web portal access", and every spec and /.well-known/ path probed on all four
    hosts returned 404.
  evidence:
  - url: https://4rsystems.com/openapi.json
    status: 404
  - url: https://4rsystems.com/.well-known/api-catalog
    status: 404
  - url: https://portal.4rsystems.com/swagger/v1/swagger.json
    status: 404
  - url: https://4rsystems.com/
    status: 200
  checked: '2026-09-05'

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