Smartrr
Smartrr is a subscription and loyalty platform for Shopify DTC brands. It adds subscribe-and-save subscriptions, a branded customer account portal, loyalty and rewards, referrals, bundles, and retention tooling on top of Shopify. Its Vendor API (https://api.smartrr.com) lets merchants programmatically manage the subscriptions their customers hold - modeled as "purchase states" - along with the subscribers, orders, bills, and the selling plans / subscription programs products are sold on. The API is authenticated with a per-organization access token generated in the Smartrr admin Integrations tab and sent in the x-smartrr-access-token header. A full OpenAPI document (116 operations) is served publicly at https://api.smartrr.com/docs/spec.json and rendered at https://api.smartrr.com/docs/redoc/.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Smartrr the way a machine reads it — 13 machine-readable artifacts across 6 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Smartrr scores 39.6/100 (thin), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Smartrr
Each block below is one kind of artifact we hold for Smartrr. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 6
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Smartrr Bills API
Recurring bills (subscription transactions) and their retry / cancel lifecycle.
Smartrr Orders API
Orders generated by subscriptions.
Smartrr Plans API
Purchasables, selling plans, selling plan groups and subscription programs - the products and the terms they are sold on.
Smartrr Subscribers API
Customer relationships (subscribers) - the Shopify customers who hold subscriptions, their payment methods, loyalty points, and referral links.
Smartrr Subscriptions API
Customer subscriptions, modeled by Smartrr as "purchase states". Create, read, and manage the lifecycle (skip, pause, cancel, reschedule, swap line items) of a subscription.
Smartrr Webhooks API
Register endpoints to receive Smartrr event notifications.
Open Collections 1
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Smartrr Vendor API
OPEN COLLECTIONPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Smartrr Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Smartrr Finops
FINOPSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Smartrr — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
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