Subbly

Subbly is a subscription-first commerce platform for building and running subscription boxes, memberships, and recurring-product businesses without code. Alongside the no-code storefront and merchant admin, Subbly ships a developer surface for headless and custom builds: the SubblyCart.js embeddable cart widget and the Subbly.js SDK (@subbly/sdk), a browser-side client that talks to Subbly's REST backend to manage products, bundles, carts, checkout and purchase, customers, and subscriptions. Subbly also exposes a public Orders API for integrating directly with any 3PL / fulfillment provider (documentation is provided by Subbly on request), plus an in-app webhook platform for notifying external services of order and subscription events. Subbly does not publish a fully open, self-serve REST reference or an OpenAPI definition; the SDK abstracts the underlying endpoints, so the API surface modeled here is derived from the documented SDK operations and is flagged as modeled.

Subbly publishes 4 APIs on the APIs.io network, including Cart API, Customers API, Products API, and 1 more. Tagged areas include Subscriptions, Subscription Commerce, Ecommerce, Subscription Box, and Recurring Billing.

Subbly’s developer surface includes authentication, documentation, SDKs, pricing, engineering blog, and 9 more developer resources.

43.3/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessPaidSelf serve
6 APIs
SubscriptionsSubscription CommerceEcommerceSubscription BoxRecurring BillingHeadless CommerceSDKWebhooks

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 43.3/100 · developing
Contract Quality 15.3 / 25
Developer Ergonomics 7.4 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/subbly: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

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

Subbly Orders API

Public Orders API for integrating Subbly orders directly with any third-party logistics (3PL) / fulfillment provider. Subbly states it will provide the Orders API documentation ...

Subbly Webhooks

In-app webhook platform that notifies external and internal services of Subbly events (order and subscription lifecycle) with configurable conditions and variables. Webhooks are...

Subbly Cart API

Cart and checkout operations (modeled from the SDK and SubblyCart.js).

Subbly Customers API

Customer accounts, addresses, and payment methods (modeled from the SDK).

Subbly Products API

Storefront products and bundles (modeled from the SDK).

Subbly Subscriptions API

Customer subscriptions and preferences (modeled from the SDK).

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Pricing Plans 1

Published pricing tiers and plan structures.

Subbly Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Subbly Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Security Posture 2

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

Subbly Authentication

apiKey · 1 scheme

SECURITY

Subbly Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Subbly Agentic Access

21 operations · 10 acting

21 operations · 10 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: subbly
url: https://raw.githubusercontent.com/api-evangelist/subbly/refs/heads/main/apis.yml
name: Subbly
kind: company
description: 'Subbly is a subscription-first commerce platform for building and running subscription boxes, memberships, and
  recurring-product businesses without code. Alongside the no-code storefront and merchant admin, Subbly ships a developer
  surface for headless and custom builds: the SubblyCart.js embeddable cart widget and the Subbly.js SDK (@subbly/sdk), a
  browser-side client that talks to Subbly''s REST backend to manage products, bundles, carts, checkout and purchase, customers,
  and subscriptions. Subbly also exposes a public Orders API for integrating directly with any 3PL / fulfillment provider
  (documentation is provided by Subbly on request), plus an in-app webhook platform for notifying external services of order
  and subscription events. Subbly does not publish a fully open, self-serve REST reference or an OpenAPI definition; the SDK
  abstracts the underlying endpoints, so the API surface modeled here is derived from the documented SDK operations and is
  flagged as modeled.'
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/subbly.png
tags:
- Subscriptions
- Subscription Commerce
- Ecommerce
- Subscription Box
- Recurring Billing
- Headless Commerce
- SDK
- Webhooks
created: '2026-07-10'
modified: '2026-07-10'
specificationVersion: '0.19'
apis:
- aid: subbly:subbly-orders-api
  name: Subbly Orders API
  tags:
  - Orders
  - Fulfillment
  - 3PL
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.subbly.dev/
  properties:
  - url: https://www.subbly.dev/
    type: Documentation
  - url: https://support.subbly.co/app-store/how-does-the-ship-station-integration-work
    type: Documentation
  description: Public Orders API for integrating Subbly orders directly with any third-party logistics (3PL) / fulfillment
    provider. Subbly states it will provide the Orders API documentation on request rather than publishing it openly, so this
    is a real but access-gated API - no endpoints are modeled here because Subbly's request/response contract is not publicly
    documented.
- aid: subbly:subbly-webhooks
  name: Subbly Webhooks
  tags:
  - Webhooks
  - Events
  - Automation
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.subbly.co/product
  properties:
  - url: https://www.subbly.co/product
    type: Documentation
  - url: https://www.subbly.co/all-features
    type: Documentation
  description: In-app webhook platform that notifies external and internal services of Subbly events (order and subscription
    lifecycle) with configurable conditions and variables. Webhooks are configured in the Subbly admin rather than via a published
    subscription API, and Subbly does not publish a formal event catalog or payload schema, so no webhook schemas are modeled
    here.
- aid: subbly:subbly-cart-api
  name: Subbly Cart API
  description: Cart and checkout operations (modeled from the SDK and SubblyCart.js).
  humanURL: https://docs.subbly.dev/reference/subbly-sdk/
  tags:
  - Cart
  properties:
  - type: OpenAPI
    url: openapi/subbly-cart-api-openapi.yml
  - type: Documentation
    url: https://docs.subbly.dev/reference/subbly-sdk/
  - type: APIReference
    url: https://www.subbly.dev/
  - type: Documentation
    url: https://docs.subbly.dev/reference/cart/
  - type: Documentation
    url: https://docs.subbly.dev/docs/installation/
- aid: subbly:subbly-customers-api
  name: Subbly Customers API
  description: Customer accounts, addresses, and payment methods (modeled from the SDK).
  humanURL: https://docs.subbly.dev/reference/subbly-sdk/
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/subbly-customers-api-openapi.yml
  - type: Documentation
    url: https://docs.subbly.dev/reference/subbly-sdk/
  - type: APIReference
    url: https://www.subbly.dev/
  - type: Documentation
    url: https://docs.subbly.dev/reference/cart/
  - type: Documentation
    url: https://docs.subbly.dev/docs/installation/
- aid: subbly:subbly-products-api
  name: Subbly Products API
  description: Storefront products and bundles (modeled from the SDK).
  humanURL: https://docs.subbly.dev/reference/subbly-sdk/
  tags:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/subbly-products-api-openapi.yml
  - type: Documentation
    url: https://docs.subbly.dev/reference/subbly-sdk/
  - type: APIReference
    url: https://www.subbly.dev/
  - type: Documentation
    url: https://docs.subbly.dev/reference/cart/
  - type: Documentation
    url: https://docs.subbly.dev/docs/installation/
- aid: subbly:subbly-subscriptions-api
  name: Subbly Subscriptions API
  description: Customer subscriptions and preferences (modeled from the SDK).
  humanURL: https://docs.subbly.dev/reference/subbly-sdk/
  tags:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/subbly-subscriptions-api-openapi.yml
  - type: Documentation
    url: https://docs.subbly.dev/reference/subbly-sdk/
  - type: APIReference
    url: https://www.subbly.dev/
  - type: Documentation
    url: https://docs.subbly.dev/reference/cart/
  - type: Documentation
    url: https://docs.subbly.dev/docs/installation/
common:
- type: AgenticAccess
  url: agentic-access/subbly-agentic-access.yml
- type: DomainSecurity
  url: security/subbly-domain-security.yml
- type: Authentication
  url: authentication/subbly-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/subbly
- type: Website
  url: https://www.subbly.co/
- type: Documentation
  url: https://docs.subbly.dev/
- type: DeveloperPortal
  url: https://www.subbly.dev/
- type: SDK
  url: https://docs.subbly.dev/reference/subbly-sdk/
- type: Pricing
  url: https://www.subbly.co/pricing
- type: Plans
  url: plans/subbly-plans-pricing.yml
- type: RateLimits
  url: rate-limits/subbly-rate-limits.yml
- type: FinOps
  url: finops/subbly-finops.yml
- type: SupportHelpCenter
  url: https://support.subbly.co/
- url: https://www.subbly.co/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com