# Memberful

**Canonical:** https://apis.io/providers/memberful/  
**Website:** https://memberful.com  
**APIs profiled:** 5

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.

## Kin Score — 27.4 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 27.4).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 38.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Payments**: 18.8 (matched via tags).

## Agent readiness — 18.4 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (5)

- **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 ...

## Security (2)

- **Memberful Domain Security** — TLSv1.3 · HSTS · DMARC
- **Memberful Vulnerability Disclosure** — disclosure policy published

## Plans (1)

- **Memberful Plans Pricing**

## Tags

Memberships, Subscription, Payments, Creators, GraphQL, Patreon

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/memberful/). Scores are computed from the provider's own public artifacts under a published rubric.