Cubby

Cubby is a New York City based software company building an AI-native facility management platform for self-storage operators, replacing legacy FMS systems with facility operations, tenant management, revenue management, e-commerce storefronts, embedded payment processing and AI-driven tenant communications. Cubby publishes a public developer documentation site covering a JSON HTTP Operator API of roughly 70 action-oriented endpoints across facilities, units, leases, customers, leads, payments, coverage, auctions and reporting, a BigQuery analytics data warehouse, Make.com outbound webhooks, embeddable Lit storefront web components, and an OAuth-protected Model Context Protocol server. The company was founded in 2022 by Matt Engfer and Adam Fleming and raised a $63M Series A led by Growth Equity at Goldman Sachs Alternatives in January 2026.

Cubby is listed with 3 APIs on the APIs.io network. Tagged areas include Company, Self Storage, Property Management, Facility Management, and Real Estate.

The Cubby catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Cubby’s developer surface includes documentation, API reference, engineering blog, support, signup flow, authentication, changelog, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

40.7/100 developing ▬ flat Agent 51/100 agent ready Front door AI 5/6 prominent Heartbeat 93/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

3 APIs 1 MCP Servers

Company Self Storage Property Management Facility Management Real Estate Payments Software-as-a-Service Artificial Intelligence Revenue Management E-Commerce

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 40.7/100 · developing

Contract Quality 9.6 / 21

Developer Ergonomics 7.7 / 17

Access Clarity 3.6 / 17

Operational Transparency 3.8 / 11

Contract Governance 1.9 / 10

Discoverability 6.8 / 9

Regulatory Posture 4.4 / 15

Agent readiness — 51/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 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 Payments 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/.

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

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agent Skills +5 pts — skills artifact present, graded by who authored it
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's

3 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 45.3 — up to +13.7 composite points
Developer Ergonomics scores 45.2 — up to +11.0 composite points

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.

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/cubby/apis.yml: open an issue on github.com/api-evangelist/cubby 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 →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 3

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

Cubby Operator API

The Cubby Operator API is a JSON HTTP API — explicitly not RESTful — oriented around actions performed on system entities rather than transfer of state. Roughly 70 POST endpoint...

Cubby Storefront API

The Cubby Storefront API is the public, unauthenticated-tenant-facing slice of the Cubby platform used to power online rental storefronts — facility search and pricing-group sea...

Cubby MCP Server

Cubby operates a hosted Model Context Protocol server at api.cubbystorage.com/mcp. The endpoint is live and OAuth-protected: an unauthenticated JSON-RPC tools/list call returns ...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Cubby MCP Server

Cubby operates a hosted, remote Model Context Protocol server on its production API host. The endpoint is live and OAuth-protected. An anonymous JSON-RPC tools/list call returns...

MCP SERVER

Cubby API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Cubby Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cubby Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Cubby Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Cubby Webhooks

ASYNCAPI

Security Posture 2

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

Cubby Authentication

2 schemes

SECURITY

Cubby Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Cubby Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Webhooks

Lifecycle

ErrorCatalog

Conventions

DataModel

Conformance

Components

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

DeclineCodes

Packages

Examples

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 4

Status, limits, changes, and where to get help

Support

ChangeLog

Deprecation

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: cubby
name: Cubby
description: Cubby is a New York City based software company building an AI-native facility management platform for self-storage
  operators, replacing legacy FMS systems with facility operations, tenant management, revenue management, e-commerce storefronts,
  embedded payment processing and AI-driven tenant communications. Cubby publishes a public developer documentation site covering
  a JSON HTTP Operator API of roughly 70 action-oriented endpoints across facilities, units, leases, customers, leads, payments,
  coverage, auctions and reporting, a BigQuery analytics data warehouse, Make.com outbound webhooks, embeddable Lit storefront
  web components, and an OAuth-protected Model Context Protocol server. The company was founded in 2022 by Matt Engfer and
  Adam Fleming and raised a $63M Series A led by Growth Equity at Goldman Sachs Alternatives in January 2026.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://www.cubbystorage.com/og-logo.png
url: https://raw.githubusercontent.com/api-evangelist/cubby/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-11'
modified: '2026-08-11'
tags:
- Company
- Self Storage
- Property Management
- Facility Management
- Real Estate
- Payments
- Software-as-a-Service
- Artificial Intelligence
- Revenue Management
- E-Commerce
tags_raw:
- Company
- Self Storage
- Property Management
- Facility Management
- Real Estate
- Payments
- SaaS
- Artificial Intelligence
- Revenue Management
- E-Commerce
- Real-Estate
apis:
- name: Cubby Operator API
  description: The Cubby Operator API is a JSON HTTP API — explicitly not RESTful — oriented around actions performed on system
    entities rather than transfer of state. Roughly 70 POST endpoints cover access codes, locks, organizations, managers,
    facilities, facility groups, units, pricing groups, customers, leads, leases, payment methods, ledgers, coverage, payments,
    auctions, notes, tasks, reports, storefront search, messaging and checkout. Responses are wrapped in a {status, data}
    envelope, money is expressed as integer cents, timestamps are ISO-8601 with facility-local or UTC semantics, and related
    entities are retrieved through explicit expansions.
  humanURL: https://cubbystorage.github.io/docs/api/
  baseURL: https://api.cubbystorage.com/v1
  tags:
  - Self Storage
  - Facility Management
  - Leases
  - Payments
  - Property Management
  properties:
  - type: Documentation
    url: https://cubbystorage.github.io/docs/api/
  - type: APIReference
    url: https://cubbystorage.github.io/docs/api/
  - type: Authentication
    url: authentication/cubby-authentication.yml
  - type: ErrorCatalog
    url: errors/cubby-problem-types.yml
  - type: Conventions
    url: conventions/cubby-conventions.yml
  - type: DataModel
    url: data-model/cubby-data-model.yml
  - type: Examples
    url: examples/cubby-examples.yml
- name: Cubby Storefront API
  description: The Cubby Storefront API is the public, unauthenticated-tenant-facing slice of the Cubby platform used to power
    online rental storefronts — facility search and pricing-group search — and is the same API key surface consumed by the
    Cubby storefront web components and the embeddable checkout flow.
  humanURL: https://cubbystorage.github.io/docs/api/#storefront-2
  baseURL: https://api.cubbystorage.com/v1/storefront
  tags:
  - E-Commerce
  - Self Storage
  - Checkout
  properties:
  - type: Documentation
    url: https://cubbystorage.github.io/docs/api/#storefront-2
  - type: Components
    url: components/cubby-components.yml
- name: Cubby MCP Server
  description: 'Cubby operates a hosted Model Context Protocol server at api.cubbystorage.com/mcp. The endpoint is live and
    OAuth-protected: an unauthenticated JSON-RPC tools/list call returns HTTP 401 with a WWW-Authenticate Bearer challenge
    pointing at the RFC 9728 protected-resource metadata document. The authorization server metadata advertises authorization-code
    and refresh-token grants, PKCE S256, dynamic client registration and a single `mcp` scope.'
  humanURL: https://api.cubbystorage.com/.well-known/oauth-protected-resource
  baseURL: https://api.cubbystorage.com/mcp
  tags:
  - MCP
  - Artificial Intelligence
  - Agents
  properties:
  - type: MCPServer
    url: mcp/cubby-mcp.yml
  - type: OAuthScopes
    url: scopes/cubby-scopes.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/cubby-domain-security.yml
- type: Website
  url: https://www.cubbystorage.com/
- type: DeveloperPortal
  url: https://cubbystorage.github.io/docs/
- type: Documentation
  url: https://cubbystorage.github.io/docs/
- type: APIReference
  url: https://cubbystorage.github.io/docs/api/
- type: GitHubOrganization
  url: https://github.com/cubbystorage
- type: Blog
  url: https://www.cubbystorage.com/blog
- type: Support
  url: https://help.cubbystorage.com/en/
- type: SignUp
  url: https://app.cubbystorage.com/signin
- type: TermsOfService
  url: https://www.cubbystorage.com/api-terms-of-service
- type: PrivacyPolicy
  url: https://www.cubbystorage.com/privacy-policy
- type: Authentication
  url: authentication/cubby-authentication.yml
- type: OAuthScopes
  url: scopes/cubby-scopes.yml
- type: MCPServer
  url: mcp/cubby-mcp.yml
- type: WellKnown
  url: well-known/cubby-well-known.yml
- type: LLMsTxt
  url: llms/cubby-llms.txt
- type: Webhooks
  url: asyncapi/cubby-webhooks.yml
- type: ChangeLog
  url: changelog/cubby-changelog.yml
- type: Lifecycle
  url: lifecycle/cubby-lifecycle.yml
- type: Deprecation
  url: lifecycle/cubby-lifecycle.yml
- type: ErrorCatalog
  url: errors/cubby-problem-types.yml
- type: DeclineCodes
  url: errors/cubby-decline-codes.yml
- type: Conventions
  url: conventions/cubby-conventions.yml
- type: DataModel
  url: data-model/cubby-data-model.yml
- type: Conformance
  url: conformance/cubby-conformance.yml
- type: Packages
  url: packages/cubby-packages.yml
- type: Components
  url: components/cubby-components.yml
- type: Examples
  url: examples/cubby-examples.yml
- type: Plans
  url: plans/cubby-plans-pricing.yml
- type: RateLimits
  url: rate-limits/cubby-rate-limits.yml
x-enrichment:
  date: '2026-08-11'
  status: enriched
  artifacts_added: 18
  pass: local-v1

Cubby API — frequently asked questions

Does Cubby have an API?

Yes. APIs.io lists 3 APIs from Cubby, including Cubby Operator API, Cubby Storefront API and Cubby MCP Server.

How do I authenticate with the Cubby API?

Cubby documents its authentication (2 schemes). The details are profiled on APIs.io as Cubby Authentication.

Does Cubby have an MCP server?

Yes. APIs.io lists 1 MCP server for Cubby: Cubby operates a hosted, remote Model Context Protocol server on its production API host. The endpoint is live and OAuth-protected. An anonymous JSON-RPC tools/list call returns HTTP 401 with a WWW-Au

Is the Cubby API ready for AI agents?

Cubby has a Kin Score of 40.7 out of 100 (developing) and an Agent Readiness score of 51.3 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

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MCP server

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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.
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