Simon Property Group

Simon Property Group is the largest retail real estate investment trust (REIT) in the United States, owning, developing, and managing premier shopping, dining, entertainment, and mixed-use destinations. Simon's portfolio includes an interest in 254 properties: traditional malls, premium outlets, Mills centers, lifestyle centers, and other retail properties in North America, Europe, and Asia. The company operates ShopSimon, an e-commerce platform, and Simon Innovation Group to advance retail technology innovation. Simon had trailing twelve-month revenue of approximately $6.36 billion as of 2025 and a market capitalization of approximately $67 billion.

Simon Property Group is listed with 1 API on the APIs.io network. Tagged areas include Commercial Real Estate, E-Commerce, Fortune 500, Malls, and Outlet Centers.

The Simon Property Group catalog on APIs.io includes 1 JSON-LD context.

Simon Property Group’s developer surface includes product news and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

15.8/100 emerging ▬ flat Agent 1/100 human only Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessEnterprise

1 API

Commercial Real Estate E-Commerce Fortune 500MallsOutlet CentersReal Estate REIT Retail

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 15.8/100 · emerging

Contract Quality 2.3 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 0.7 / 17

Operational Transparency 1.6 / 11

Contract Governance 0.0 / 10

Discoverability 5.0 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 1/100 · 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 7 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/simon-property-group/"><img src="https://apis.io/badge/simon-property-group/card.svg" alt="Simon Property Group on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 10.7 — up to +22.3 composite points Ask about this →
Access Clarity scores 4.3 — up to +19.1 composite points Ask about this →
Developer Ergonomics scores 21.4 — up to +15.7 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/simon-property-group/apis.yml: open an issue on github.com/api-evangelist/simon-property-group to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
REITs and Real Estate Securities (SEC REIT registrants, EPRA)	regulated	19.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

ShopSimon Retailer API

ShopSimon is Simon's e-commerce platform integrating online and offline retail. The ShopSimon Retailer Hub provides APIs for sellers to integrate product listings, inventory dat...

Simon Property Group API pricing

Not yet checked against Simon Property Group's own pricing page. Compiled by API Evangelist on 2026-05-05 from www.simon.com/; confirm before you rely on a figure.

Plan	Price
Contact Sales enterprise	—

Plan details, limits and sources →

Rate limits

Contractual limit: see partner integration agreement varies

Compiled by API Evangelist, not yet checked against Simon Property Group's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Simon Property Group Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Simon Property Group Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Simon Property Group Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Simon Property Group Context

43 classes · 0 properties

JSON-LD

Security Posture 2

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

Simon Property Group Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Simon Property Group Vulnerability Disclosure

security.txt · contact published

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Simon® Takes Holiday Shopping to a New Level Thanks to AI

Simon Property Group has explored converting some mall ...

Simon Property Group - The #1 mall company in the US ...

Simon Property Group Announces the Passing of David ...

Simon Property Group's AI Strategy: Analysis of ...

Resources

Get Started 1

Portal, sign-up, and the first successful call

Business Portal

Business Portal

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

Seller Support

Seller Support

Contact

Contact

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 5

The organization behind the API

LinkedIn

Website

Website

Website

Website

Investor Relations

Investor Relations

News

News

Other 3

Properties that don't map to a standard resource type

ShopSimon

ShopSimon

Innovation Group

Innovation Group

Annual Report

Annual Report

Source (apis.yml)

aid: simon-property-group
name: Simon Property Group
description: 'Simon Property Group is the largest retail real estate investment trust (REIT) in the United States, owning,
  developing, and managing premier shopping, dining, entertainment, and mixed-use destinations. Simon''s portfolio includes
  an interest in 254 properties: traditional malls, premium outlets, Mills centers, lifestyle centers, and other retail properties
  in North America, Europe, and Asia. The company operates ShopSimon, an e-commerce platform, and Simon Innovation Group to
  advance retail technology innovation. Simon had trailing twelve-month revenue of approximately $6.36 billion as of 2025
  and a market capitalization of approximately $67 billion.'
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/simon-property-group.png
tags:
- Commercial Real Estate
- E-Commerce
- Fortune 500
- Malls
- Outlet Centers
- Real Estate
- REIT
- Retail
tags_raw:
- Commercial Real Estate
- E-Commerce
- Fortune 500
- Malls
- Outlet Centers
- Real Estate
- REIT
- Retail
- Real-Estate
url: https://raw.githubusercontent.com/api-evangelist/simon-property-group/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-05-02'
specificationVersion: '0.23'
apis:
- aid: simon-property-group:shopsimon
  name: ShopSimon Retailer API
  description: ShopSimon is Simon's e-commerce platform integrating online and offline retail. The ShopSimon Retailer Hub
    provides APIs for sellers to integrate product listings, inventory data, and order management with the ShopSimon marketplace.
    The platform facilitates product catalog sync, offer management, and order fulfillment for retail partners selling on
    ShopSimon.
  humanURL: https://sellersupport.shopsimon.com/
  tags:
  - E-Commerce
  - Inventory
  - Marketplace
  - Order
  - Product
  - Retail
  tags_raw:
  - E-Commerce
  - Inventory
  - Marketplace
  - Orders
  - Products
  - Retail
  properties:
  - type: Documentation
    url: https://sellersupport.shopsimon.com/hc/en-us/articles/9632618154647-API-Integration
  - type: GettingStarted
    url: https://sellersupport.shopsimon.com/hc/en-us/articles/28034776101911-Getting-Started
common:
- type: Plans
  url: plans/simon-property-group-plans-pricing.yml
- type: RateLimits
  url: rate-limits/simon-property-group-rate-limits.yml
- type: FinOps
  url: finops/simon-property-group-finops.yml
- type: VulnerabilityDisclosure
  url: security/simon-property-group-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/simon-property-group-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/simon-property-group
- type: Website
  url: https://www.simon.com
- type: Website
  url: https://www.simonpropertygroup.com
- type: Business Portal
  url: https://business.simon.com
- type: ShopSimon
  url: https://www.shopsimon.com
- type: Seller Support
  url: https://sellersupport.shopsimon.com
- type: Investor Relations
  url: https://investors.simon.com
- type: Innovation Group
  url: https://www.simonpropertygroup.com/simon-innovation-group
- type: Contact
  url: https://www.simon.com/contact
- type: Annual Report
  url: https://investors.simon.com/financial-information/annual-reports
- type: News
  url: https://investors.simon.com/news-releases
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Simon Property Group API — frequently asked questions

Does Simon Property Group have an API?

Yes. APIs.io lists 1 API from Simon Property Group, including ShopSimon Retailer API.

How much does the Simon Property Group API cost?

APIs.io lists 1 pricing plan for Simon Property Group, with each plan's price, limits and inclusions under Pricing on this page.

Is the Simon Property Group API ready for AI agents?

Simon Property Group has a Kin Score of 15.8 out of 100 (emerging) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/simon-property-group"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/simon-property-group/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/simon-property-group/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.