OpenCart website screenshot

OpenCart

OpenCart is a free, open-source eCommerce platform providing a REST API for managing products, categories, orders, customers, returns, and store configuration in self-hosted environments. Built on PHP and MySQL, OpenCart powers over 470,000 online stores worldwide and offers token-based API authentication with IP-allowlist security controls.

OpenCart publishes 10 APIs on the APIs.io network, including Affiliates API, Authentication API, Cart API, and 7 more. Tagged areas include E-Commerce, Shopping Cart, Open-Source, Self-Hosted, and Product.

The OpenCart catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

OpenCart’s developer surface includes authentication, documentation, engineering blog, pricing, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub
42.2/100 developing ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreeSelf serve⚡ Free to try
1 APIs
E-CommerceShopping CartOpen-SourceSelf-HostedProductOrderCustomersCategories

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 42.2/100 · developing
Contract Quality 13.0 / 23
Developer Ergonomics 5.1 / 18
Access Clarity 7.1 / 18
Operational Transparency 6.2 / 12
Contract Governance 1.1 / 11
Discoverability 6.2 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 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
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
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/opencart: 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 →

APIs 10

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

OpenCart Affiliates API

Affiliate session management

OpenCart Authentication API

API login and session token management

OpenCart Cart API

Shopping cart product management

OpenCart Customer API

Customer session and profile management

OpenCart Orders API

Order creation, confirmation, and history

OpenCart Payment Address API

Billing address management

OpenCart Payment Methods API

Available payment method retrieval and selection

OpenCart Shipping Address API

Shipping address management

OpenCart Shipping Methods API

Available shipping method retrieval and selection

OpenCart Subscriptions API

Subscription order management

Scroll for all 10

Open Collections 11

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

API Collection

OPEN COLLECTION

OpenCart REST Affiliates API

OPEN COLLECTION

OpenCart REST Affiliates Authentication API

OPEN COLLECTION

OpenCart REST Affiliates Cart API

OPEN COLLECTION

OpenCart REST Affiliates Customer API

OPEN COLLECTION

OpenCart REST Affiliates Orders API

OPEN COLLECTION

OpenCart REST Affiliates Payment Address API

OPEN COLLECTION

OpenCart REST Affiliates Payment Methods API

OPEN COLLECTION

OpenCart REST Affiliates Shipping Address API

OPEN COLLECTION

OpenCart REST Affiliates Shipping Methods API

OPEN COLLECTION

OpenCart REST Affiliates Subscriptions API

OPEN COLLECTION

Scroll for all 11

Pricing Plans 1

Published pricing tiers and plan structures.

Opencart Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Opencart Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Opencart Finops

FINOPS

Semantic Vocabularies 1

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

Opencart Context

15 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

OpenCart API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Address

17 properties

JSON SCHEMA

CartProduct

10 properties

JSON SCHEMA

Order

4 properties

JSON SCHEMA

Examples 6

Example request and response payloads for these APIs.

Add Product To Cart Request

4 fields

EXAMPLE

Add Product To Cart Response

1 fields

EXAMPLE

Confirm Order Response

4 fields

EXAMPLE

Login Request

2 fields

EXAMPLE

Login Response

2 fields

EXAMPLE

Set Customer Request

8 fields

EXAMPLE

Security Posture 2

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

Opencart Authentication

apiKey · 1 scheme

SECURITY

Opencart Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Opencart Agentic Access

16 operations · 12 acting

16 operations · 12 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide
ContributionGuide
 Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 4

Status, limits, changes, and where to get help

IssueTracker
IssueTracker
 Releases
Releases
 Forums
Forums
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Other 2

Properties that don't map to a standard resource type

X
X
 Marketplace
Marketplace

Source (apis.yml)

apis.yml Raw ↑ 
aid: opencart
name: OpenCart
description: 'OpenCart is a free, open-source eCommerce platform providing a REST API for managing products, categories, orders,
  customers, returns, and store configuration in self-hosted environments. Built on PHP and MySQL, OpenCart powers over 470,000
  online stores worldwide and offers token-based API authentication with IP-allowlist security controls.

  '
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/opencart.png
url: https://raw.githubusercontent.com/api-evangelist/opencart/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.23'
tags:
- E-Commerce
- Shopping Cart
- Open-Source
- Self-Hosted
- Product
- Order
- Customers
- Categories
tags_raw:
- eCommerce
- Shopping Cart
- Open Source
- Self-Hosted
- Products
- Orders
- Customers
- Categories
apis:
- aid: opencart:opencart-affiliates-api
  name: OpenCart Affiliates API
  description: Affiliate session management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Affiliates
  properties:
  - type: OpenAPI
    url: openapi/opencart-affiliates-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-authentication-api
  name: OpenCart Authentication API
  description: API login and session token management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/opencart-authentication-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-cart-api
  name: OpenCart Cart API
  description: Shopping cart product management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Cart
  properties:
  - type: OpenAPI
    url: openapi/opencart-cart-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-customer-api
  name: OpenCart Customer API
  description: Customer session and profile management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Customers
  tags_raw:
  - Customer
  properties:
  - type: OpenAPI
    url: openapi/opencart-customer-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-orders-api
  name: OpenCart Orders API
  description: Order creation, confirmation, and history
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/opencart-orders-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-payment-address-api
  name: OpenCart Payment Address API
  description: Billing address management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Payment Address
  properties:
  - type: OpenAPI
    url: openapi/opencart-payment-address-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-payment-methods-api
  name: OpenCart Payment Methods API
  description: Available payment method retrieval and selection
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Payment Methods
  properties:
  - type: OpenAPI
    url: openapi/opencart-payment-methods-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-shipping-address-api
  name: OpenCart Shipping Address API
  description: Shipping address management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Shipping Address
  properties:
  - type: OpenAPI
    url: openapi/opencart-shipping-address-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-shipping-methods-api
  name: OpenCart Shipping Methods API
  description: Available shipping method retrieval and selection
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Shipping Methods
  properties:
  - type: OpenAPI
    url: openapi/opencart-shipping-methods-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
- aid: opencart:opencart-subscriptions-api
  name: OpenCart Subscriptions API
  description: Subscription order management
  humanURL: https://docs.opencart.com/admin-interface/system/users/api
  baseURL: https://yourstore.com/api
  tags:
  - Subscription
  tags_raw:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/opencart-subscriptions-api-openapi.yml
  - type: Documentation
    url: https://docs.opencart.com/admin-interface/system/users/api
  - type: Documentation
    url: https://docs.opencart.com/developer/
  - type: GitHubRepository
    url: https://github.com/opencart/opencart
common:
- type: IssueTracker
  url: https://github.com/opencart/opencart/issues
- type: Releases
  url: https://github.com/opencart/opencart/releases
- type: ContributionGuide
  url: https://github.com/opencart/opencart/blob/master/CONTRIBUTING.md
- type: AgenticAccess
  url: agentic-access/opencart-agentic-access.yml
- type: DomainSecurity
  url: security/opencart-domain-security.yml
- type: Authentication
  url: authentication/opencart-authentication.yml
- type: Website
  url: https://www.opencart.com
- type: Documentation
  url: https://docs.opencart.com
- type: GitHubOrg
  url: https://github.com/opencart
- type: LinkedIn
  url: https://www.linkedin.com/company/5224021/
- type: Blog
  url: https://www.opencart.com/blog
- type: Pricing
  url: https://www.opencart.com/index.php?route=cms/download
- type: X
  url: https://twitter.com/opencart
- type: Forums
  url: https://forum.opencart.com
- type: Marketplace
  url: https://www.opencart.com/index.php?route=marketplace/extension
- type: Plans
  url: plans/opencart-plans-pricing.yml
- type: RateLimits
  url: rate-limits/opencart-rate-limits.yml
- type: FinOps
  url: finops/opencart-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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