Clerk.io website screenshot

Clerk.io

Clerk.io is an e-commerce personalization platform that uses artificial intelligence and machine learning to deliver tailored product recommendations, on-site search results, audience-segmented email campaigns, and merchandising controls for online retailers. The platform exposes a REST API for product, category, order, and customer data ingestion, plus client-side JavaScript and Liquid templating for recommendation slots and search experiences.

Clerk.io publishes 1 API on the APIs.io network. Tagged areas include AI, Commerce, E-Commerce, Email Marketing, and Personalization.

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

Clerk.io’s developer surface includes documentation, engineering blog, pricing, and 14 more developer resources.

45.3/100 developing ▬ flat Agent 19/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
2 APIs
AICommerceE-CommerceEmail MarketingPersonalizationRecommendationsSearch

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 45.3/100 · developing
Contract Quality 12.1 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 15.8 / 20
Operational Transparency 6.8 / 13
Governance 2.5 / 12
Discoverability 5.9 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
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
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/clerk-io: 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 2

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

Clerk.io API

The Clerk.io API provides REST endpoints for managing products, categories, orders, customers, recommendations, and search. The API uses a dual-key authentication model: a publi...

Clerk.js Client Library

Clerk.js is the browser-side JavaScript library for embedding Clerk.io recommendation slots, search, and email opens on a storefront, with Liquid templating support and event tr...

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Clerk Io Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Semantic Vocabularies 1

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

Clerk Io Context

0 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Clerk.io API Rules

8 rules · 4 errors 4 warnings

SPECTRAL

Security Posture 2

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

Clerk Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Clerk Io Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 3

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 4

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: clerk-io
name: Clerk.io
url: https://raw.githubusercontent.com/api-evangelist/clerk-io/refs/heads/main/apis.yml
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
created: '2025-02-08'
modified: '2026-04-26'
type: Index
access: 3rd-Party
position: Consumer
specificationVersion: '0.19'
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/clerk-io.png
kind: company
tags:
- AI
- Commerce
- E-Commerce
- Email Marketing
- Personalization
- Recommendations
- Search
description: Clerk.io is an e-commerce personalization platform that uses artificial intelligence and machine learning to
  deliver tailored product recommendations, on-site search results, audience-segmented email campaigns, and merchandising
  controls for online retailers. The platform exposes a REST API for product, category, order, and customer data ingestion,
  plus client-side JavaScript and Liquid templating for recommendation slots and search experiences.
apis:
- aid: clerk-io:clerk-io-api
  name: Clerk.io API
  tags:
  - Commerce
  - Personalization
  - Recommendations
  - Search
  humanURL: https://docs.clerk.io/
  properties:
  - url: https://docs.clerk.io/
    type: Documentation
  - url: https://docs.clerk.io/docs/how-the-clerkio-platform-works
    type: GettingStarted
  - url: https://docs.clerk.io/docs/authentication
    type: Authentication
  - url: https://docs.clerk.io/docs/errors
    type: ErrorCodes
  - url: https://docs.clerk.io/docs/pagenation
    type: Pagination
  description: 'The Clerk.io API provides REST endpoints for managing products, categories, orders, customers, recommendations,
    and search. The API uses a dual-key authentication model: a public key identifies the store and is used in browser-side
    requests, while a private key is required for sensitive operations and data ingestion. JSON is the primary payload format
    and SSL is required when sending the private key.'
- aid: clerk-io:clerkjs
  name: Clerk.js Client Library
  tags:
  - Client Library
  - JavaScript
  humanURL: https://docs.clerk.io/docs/clerkjs-quick-start
  properties:
  - url: https://docs.clerk.io/docs/clerkjs-quick-start
    type: Documentation
  description: Clerk.js is the browser-side JavaScript library for embedding Clerk.io recommendation slots, search, and email
    opens on a storefront, with Liquid templating support and event tracking.
common:
- type: TrustCenter
  url: security/clerk-io-trust-center.yml
- type: DomainSecurity
  url: security/clerk-io-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/clerkio
- type: LinkedIn
  url: https://www.linkedin.com/company/clerk-io
- type: Website
  url: https://www.clerk.io/
- type: Documentation
  url: https://docs.clerk.io/
- type: Knowledgebase
  url: https://help.clerk.io/
- type: StatusPage
  url: https://status.clerk.io/
- type: Blog
  url: https://www.clerk.io/blogs
- type: Pricing
  url: https://www.clerk.io/pricing
- type: Partners
  url: https://www.clerk.io/partners
- type: Integrations
  url: https://www.clerk.io/integrations
- type: Trust Center
  url: https://trust.clerk.io/
- type: TermsOfService
  url: https://www.clerk.io/terms-of-service
- type: PrivacyPolicy
  url: https://www.clerk.io/privacy
- type: JSONLD
  url: json-ld/clerk-io-context.jsonld
- type: Spectral
  url: rules/clerk-io-rules.yml
- type: LlmsText
  url: https://docs.clerk.io/llms.txt
integrations:
- name: cler.io
- name: Heart
- name: Icon symbolizing AI
- name: People icon, symbolizing audience
- name: Envelope icon symbolizing email
- name: Icon symbolizing a platform
- name: Reviews
- name: Icon symbolizing integration process
- name: Icon symbolizing integrations
- name: people
- name: Icon of a graph symbolizing verticals
- name: Icon symbolizing careers
- name: Handshake icon symbolizing partnerships
- name: Book icon symbolizing knowledge
- name: shield orange
- name: people orange
- name: interrogation orange
- name: book orange
- name: play orange
- name: shopify
- name: magneto
- name: big comemrce
- name: shopware
- name: woo commerce
- name: presta shop
- name: dandomain
- name: lightspeed
- name: smartweb
- name: shoporama
- name: JTL
- name: clerk.io
maintainers:
- FN: Kin Lane
  email: kinlane@gmail.com