Mason

Mason (getmason.io), the company behind the ModeMagic Shopify app, is an AI-powered "agentic shopping engine" for ecommerce brands. Built by Kubric, the platform pairs merchandising, promotion, conversion and gamification AI agents with a developer platform for programmatic creative generation and commerce automation. Its public developer hub at getmason.dev documents a REST API (OAuth2 bearer, base host https://api.getmason.io) spanning app provisioning, template-driven image/creative generation (Genie), long-running creative tasks, asset search, webhook subscriptions, and a promotion/discount engine (Scrooge) for tiered, bulk and Buy-X-Get-Y discounts, plus a custom-checkout integration contract. Surfaced as a portfolio company of Accel, GGV Capital, Point Nine and Y Combinator; this profile was enriched by the API Evangelist pipeline from Mason's published OpenAPI, llms.txt and developer documentation.

Mason publishes 8 API contracts indexed on the APIs.io network, including Apps API, Create Image API, Images API, and 5 more. Tagged areas include Company, E-Commerce, Commerce, Artificial Intelligence, and Agents.

The Mason catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Mason’s developer surface includes authentication, documentation, API reference, getting-started guide, changelog, engineering blog, pricing, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

57.3/100 strong ▬ flat Agent 32/100 agent ready Front door AI 4/6 moderate Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serveFree trial⚡ Free to try

6 published contracts 3 Agent Skills

Company E-Commerce Commerce Artificial Intelligence Agents Content Generation Discounts Promotions Webhook Shopify

What this lets a business do 3

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

AI Model Services

AE-110

Create ImageImages

POST /api/images POST /v1/task/creative

Pricing Management

BC-440

Tiered Discounts

PUT /api/v1/scrooge/tiered-discounts

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /v1/webhook GET /v1/webhook DELETE /v1/webhook/{id}

Kin Score

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

Composite quality — 57.3/100 · strong

Contract Quality 10.1 / 19

Developer Ergonomics 8.1 / 15

Access Clarity 11.6 / 15

Operational Transparency 3.6 / 10

Contract Governance 1.6 / 9

Discoverability 5.9 / 8

Regulatory Posture 5.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 0 / 5

Distinct Operations 0 / 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 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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 53.8 — up to +11.6 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Developer Ergonomics scores 54.2 — up to +9.2 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/mason/apis.yml: open an issue on github.com/api-evangelist/mason 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
MACH & Headless Commerce	builds-on	17.2 (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.

Standards implemented 2

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.

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 8

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

Mason Apps API

The Apps API from Mason — 2 operation(s) for apps.

Mason Create Image API

The Create Image API from Mason — 1 operation(s) for create image.

Mason Images API

The Images API from Mason — 2 operation(s) for images.

Mason Retrieve an Image API

The Retrieve an Image API from Mason — 1 operation(s) for retrieve an image.

Mason Search API

The Search API from Mason — 1 operation(s) for search.

Mason Template Mappings API

The Template Mappings API from Mason — 1 operation(s) for template mappings.

Mason Tiered Discounts API

The Tiered Discounts API from Mason — 4 operation(s) for tiered discounts.

Mason Webhooks API

The Webhooks API from Mason — 2 operation(s) for webhooks.

Scroll for all 8

Open Collections 8

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

Mason Apps API

OPEN COLLECTION

Mason Apps Create Image API

OPEN COLLECTION

Mason Apps Images API

OPEN COLLECTION

Mason Apps Retrieve an Image API

OPEN COLLECTION

Mason Apps Search API

OPEN COLLECTION

Mason Apps Template Mappings API

OPEN COLLECTION

Mason Apps Tiered Discounts API

OPEN COLLECTION

Mason Apps Webhooks API

OPEN COLLECTION

Scroll for all 8

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Create and clean up store discounts

AGENT SKILL

Generate a creative image from a template

AGENT SKILL

Subscribe to Mason events with webhooks

AGENT SKILL

Mason API pricing

Prices published by Mason, read 2026-10-07 from getmason.io/pricing/.

Plan	Price
Free trial	Try ModeMagic for free up to 10 orders Includes: up to 10 orders
Grow Plan	$249/mo Includes: Exclusively for brands with revenue under US$10,000 / mon; Unlock revenue + conversion apps, White-g
Scale Plan	Talk to us for tailored plans Includes: AI-apps such as Smart Price, Personalised Auto-Bundles, Lightning Sales +more; Targeting & Segmentat

Plan details, limits and sources →

Billed by: orders · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Mason Plans Pricing

3 plans

PLANS

Mason Price Estimates

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Mason

SLA

FinOps 1

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

Mason Finops

FINOPS

Event Specifications 1

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

Mason Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Mason API Rules

51 rules · 47 errors 3 warnings 1 info

SPECTRAL

OpenAPI Overlays 6

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Mason Apps Overlay

1 action · update · mason-apps-openapi.json

DERIVED

Mason Discounts Overlay

1 action · update · mason-discounts-openapi.json

DERIVED

Mason Generation Overlay

1 action · update · mason-generation-openapi.json

DERIVED

Mason Search Overlay

1 action · update · mason-search-openapi.json

DERIVED

Mason Tasks Overlay

1 action · update · mason-tasks-openapi.json

DERIVED

Mason Webhooks Overlay

1 action · update · mason-webhooks-openapi.json

DERIVED

Security Posture 3

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

Mason Authentication

oauth2 · 1 scheme

SECURITY

Mason Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Mason Vulnerability Disclosure

no policy recorded

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Mason Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Mason Agentic Access

16 operations · 11 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

WellKnown

WellKnown

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Webhooks

Conformance

Lifecycle

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

DomainSecurity

OAuthScopes

Authentication

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: mason
name: Mason
description: Mason (getmason.io), the company behind the ModeMagic Shopify app, is an AI-powered "agentic shopping engine"
  for ecommerce brands. Built by Kubric, the platform pairs merchandising, promotion, conversion and gamification AI agents
  with a developer platform for programmatic creative generation and commerce automation. Its public developer hub at getmason.dev
  documents a REST API (OAuth2 bearer, base host https://api.getmason.io) spanning app provisioning, template-driven image/creative
  generation (Genie), long-running creative tasks, asset search, webhook subscriptions, and a promotion/discount engine (Scrooge)
  for tiered, bulk and Buy-X-Get-Y discounts, plus a custom-checkout integration contract. Surfaced as a portfolio company
  of Accel, GGV Capital, Point Nine and Y Combinator; this profile was enriched by the API Evangelist pipeline from Mason's
  published OpenAPI, llms.txt and developer documentation.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium (free trial) · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://media.getmason.io/api/assetlib/e5067013-1809-44f3-8847-8d66857625c7.png
url: https://raw.githubusercontent.com/api-evangelist/mason/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- ggv-capital
- point-nine
- y-combinator
x-tier: enriched
x-tier-reason: has-public-api
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 31
  pass: local-v1
tags:
- Company
- E-Commerce
- Commerce
- Artificial Intelligence
- Agents
- Content Generation
- Discounts
- Promotions
- Webhook
- Shopify
tags_raw:
- Company
- Ecommerce
- Commerce
- AI
- Agents
- Content Generation
- Discounts
- Promotions
- Webhooks
- Shopify
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: mason:mason-apps-api
  name: Mason Apps API
  description: The Apps API from Mason — 2 operation(s) for apps.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Application
  tags_raw:
  - Apps
  properties:
  - type: OpenAPI
    url: openapi/mason-apps-api-openapi.yml
- aid: mason:mason-create-image-api
  name: Mason Create Image API
  description: The Create Image API from Mason — 1 operation(s) for create image.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - CreateImage
  tags_raw:
  - Create Image
  properties:
  - type: OpenAPI
    url: openapi/mason-create-image-api-openapi.yml
- aid: mason:mason-images-api
  name: Mason Images API
  description: The Images API from Mason — 2 operation(s) for images.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Image
  tags_raw:
  - Images
  properties:
  - type: OpenAPI
    url: openapi/mason-images-api-openapi.yml
- aid: mason:mason-retrieve-an-image-api
  name: Mason Retrieve an Image API
  description: The Retrieve an Image API from Mason — 1 operation(s) for retrieve an image.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Retrieve an Image
  properties:
  - type: OpenAPI
    url: openapi/mason-retrieve-an-image-api-openapi.yml
- aid: mason:mason-search-api
  name: Mason Search API
  description: The Search API from Mason — 1 operation(s) for search.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/mason-search-api-openapi.yml
- aid: mason:mason-template-mappings-api
  name: Mason Template Mappings API
  description: The Template Mappings API from Mason — 1 operation(s) for template mappings.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Template Mappings
  properties:
  - type: OpenAPI
    url: openapi/mason-template-mappings-api-openapi.yml
- aid: mason:mason-tiered-discounts-api
  name: Mason Tiered Discounts API
  description: The Tiered Discounts API from Mason — 4 operation(s) for tiered discounts.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Tiered Discounts
  properties:
  - type: OpenAPI
    url: openapi/mason-tiered-discounts-api-openapi.yml
- aid: mason:mason-webhooks-api
  name: Mason Webhooks API
  description: The Webhooks API from Mason — 2 operation(s) for webhooks.
  humanURL: https://www.getmason.dev/reference
  baseURL: https://api.getmason.io
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/mason-webhooks-api-openapi.yml
common:
- type: Plans
  url: plans/mason-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/mason-capability-edges.yml
  name: Mason Business Capability Map
- type: Overlay
  url: overlays/mason-apps-overlay.yaml
- type: VulnerabilityDisclosure
  url: security/mason-vulnerability-disclosure.yml
- type: Security
  url: https://getmason.io/security/
- type: DomainSecurity
  url: security/mason-domain-security.yml
- type: AgenticAccess
  url: agentic-access/mason-agentic-access.yml
- type: OAuthScopes
  url: scopes/mason-scopes.yml
- type: Authentication
  url: authentication/mason-authentication.yml
- type: Website
  url: https://getmason.io/
- type: DeveloperPortal
  url: https://www.getmason.dev/
- type: Documentation
  url: https://www.getmason.dev/
- type: APIReference
  url: https://www.getmason.dev/reference
- type: GettingStarted
  url: https://www.getmason.dev/docs/getting-to-know-mason
- type: ChangeLog
  url: https://www.getmason.dev/changelog
- type: Blog
  url: https://getmason.io/feed/
- type: Pricing
  url: https://getmason.io/pricing/
- type: Login
  url: https://app.getmason.io/login
- type: TermsOfService
  url: https://getmason.io/termsofuse/
- type: PrivacyPolicy
  url: https://getmason.io/privacypolicy/
- type: GitHubOrganization
  url: https://github.com/kubric
- type: LLMsTxt
  url: llms/mason-llms.txt
- type: ErrorCatalog
  url: errors/mason-problem-types.yml
- type: Conventions
  url: conventions/mason-conventions.yml
- type: DataModel
  url: data-model/mason-data-model.yml
- type: Webhooks
  url: asyncapi/mason-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/mason-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Conformance
  url: conformance/mason-conformance.yml
- type: WellKnown
  url: well-known/mason-well-known.yml
- type: Lifecycle
  url: lifecycle/mason-lifecycle.yml
- type: ChangeLog
  url: changelog/mason-changelog.yml
- type: AgentSkill
  url: skills/_index.yml

Mason API — frequently asked questions

Does Mason have an API?

Yes. APIs.io lists 8 APIs from Mason, including Mason Apps API, Mason Create Image API and Mason Images API, and 5 more.

Is there an OpenAPI specification for the Mason API?

Yes. APIs.io indexes 8 OpenAPI specifications for Mason, each linked for download from this page.

How do I authenticate with the Mason API?

Mason uses bearer-token authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Mason Authentication.

How much does the Mason API cost?

Mason publishes its prices; its Free trial plan is Try ModeMagic for free up to 10 orders as of 2026-10-07. APIs.io lists 3 pricing plans for Mason, with each plan's price, limits and inclusions under Pricing on this page.

Is the Mason API ready for AI agents?

Mason has a Kin Score of 57.3 out of 100 (strong) and an Agent Readiness score of 31.5 (agent-ready), scored by API Evangelist on 2026-11-06.

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