Memberful
Memberful is a membership and subscription platform (owned by Patreon) that lets independent publishers, educators, and creators sell memberships, subscriptions, digital downloads, podcasts, and courses on their own site while Memberful handles checkout, recurring billing (via Stripe), and member management. Its public developer surface is a GraphQL API served per account at https://ACCOUNT.memberful.com/api/graphql, authenticated with an API key (bearer token) or OAuth 2.0 access token, covering Members, Subscriptions, Plans/Passes, Coupons, and Orders through queries and mutations. Memberful also provides OAuth 2.0 single sign-on for apps and HMAC-signed webhooks for member, subscription, plan, order, and download events.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Memberful the way a machine reads it — 12 machine-readable artifacts across 5 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 — Memberful scores 24.7/100 (emerging), with a separate agent-readiness read of 7/100 (human only). 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 Memberful
Each block below is one kind of artifact we hold for Memberful. 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 5
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.
Memberful Members API
Query members and their profiles, emails, subscriptions, downloads, and custom JSON metadata (up to 50 keys), and create, update, or delete members through GraphQL mutations. Cu...
Memberful Subscriptions API
Read and manage member subscriptions - the link between a member and the pass/plan they pay for - including status, current period, trial state, activation and expiration, and t...
Memberful Plans and Passes API
Query the passes members subscribe to (called "Plans" in the dashboard) and the plans (pricing options such as monthly or annual) within each pass, including price, interval, an...
Memberful Orders API
Query orders (transaction records) for a member or account, including totals, status, coupons applied, and the member and plan involved. Orders back the order.purchased, order.c...
Memberful OAuth SSO API
OAuth 2.0 Authorization Code flow (with PKCE) for signing members into external apps. Authorize at /oauth, exchange the code at /oauth/token, then query the signed-in member at ...
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).
Memberful GraphQL API
OPEN COLLECTIONGraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Memberful GraphQL API
Memberful (a Patreon-owned membership and subscription platform) exposes a **native GraphQL API** - this is a real, documented GraphQL surface, not a REST-to-GraphQL projection.
GRAPHQLPricing 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.
Memberful 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.
Memberful 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.
Resources
Every other property we hold for Memberful — 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 1
Reference material describing how the API behaves
Build 1
SDKs, sample code, and the tooling you integrate with
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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