# io.usefulapi/memberful (remote · memberful.usefulapi.io)

Manage Memberful members, subscriptions, plans, passes and coupons via the GraphQL API.

- Trust score: 73/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `memberful.usefulapi.io`: 73/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-memberful/memberful.md), [page](https://verifymcp.io/servers/io-usefulapi-memberful/memberful)

## Channel facts

- Endpoint: `https://memberful.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 78/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1081 tokens (~90/item across 12 items; 12 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http io-usefulapi-memberful https://memberful.usefulapi.io/mcp
```

### Codex

```toml
[mcp_servers.io-usefulapi-memberful]
url = "https://memberful.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-memberful": {
      "type": "remote",
      "url": "https://memberful.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-memberful --url https://memberful.usefulapi.io/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-memberful:
    url: "https://memberful.usefulapi.io/mcp"
```

### Other

```json
{
  "mcpServers": {
    "io-usefulapi-memberful": {
      "type": "http",
      "url": "https://memberful.usefulapi.io/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 73, +55)

- [security regression] Stability: unverified → fail
- [security regression] A breaking change shipped without a version bump: still 1.0.1
- [security regression] Tool “list_subscriptions” was removed
- [security regression] Tool “memberful_graphql” was removed
- [security regression] Tool “update_member” was removed
- [security regression] Tool “memberful_query” was removed
- [security regression] Tool “change_subscription_expiration” was removed
- [security regression] Tool “create_coupons” was removed
- [security regression] Tool “create_member” was removed
- [security regression] Tool “get_member” was removed
- [security regression] Tool “get_subscription” was removed
- [security regression] Tool “list_members” was removed
- [security regression] Tool “list_passes” was removed
- [security regression] Tool “list_plans” was removed
- [security improvement] Authorization: unverified → pass
- [security improvement] Transport: fail → pass
- [security] New tool “create_member”, which the server declares destructive
- [security] New tool “create_coupons”, which the server declares destructive
- [security] New tool “change_subscription_expiration”, which the server declares destructive
- [security] New tool “update_member”, which the server declares destructive
- [security] New tool “memberful_graphql”, which the server declares destructive
- [functional regression] MCP protocol: unverified → fail
- [functional regression] Schema quality: excellent → unverified
- [functional regression] Schema quality: fail → unverified
- [functional regression] Schema quality: pass → unverified
- [functional improvement] Endpoint reachability: not serving MCP → reachable
- [functional improvement] Stability: unverified → 0.20
- [functional improvement] Tool coverage: unverified → 100
- [functional] New tool “list_passes”
- [functional] New tool “list_members”
- [functional] New tool “get_subscription”
- [functional] New tool “get_member”
- [functional] New tool “memberful_query”
- [functional] New tool “list_subscriptions”
- [functional] New tool “list_plans”

### 2026-08-01 (score 18, −54)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Stability: 0.13 → unverified
- [security regression] Authorization: pass → unverified
- [security regression] Transport: pass → fail
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Capabilities: fail → unverified

### 2026-07-31 (score 72, +3)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 69, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 68, −2)

- [security regression] Authorization: pass → fail

### 2026-07-28 (score 70, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-07-27 (score 69, +57)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 12)

First indexed and scored.

## MCP tools (12)

### `get_member` (~59 tokens)

Get a member

Fetch one Memberful member by id: profile, Stripe customer id, unrestricted-access flag, total spend, metadata, address, and their subscriptions (each with plan). Memberful GraphQL: member(id).

Input parameters:

- `id` (string, required): The member id.

### `list_members` (~188 tokens)

List members

List members (Relay connection): each edge has a cursor + node (profile, Stripe customer id, unrestricted-access flag, total spend, and their subscriptions). Paginate with `first` + `after` (pass the last edge's `cursor`); `first` defaults to 50. Set `activeOnly` to return only members with an ACTIVE membership state. For member-state filters beyond active, use memberful_query. Memberful GraphQL: members connection.

Input parameters:

- `activeOnly` (boolean): Only return members with an ACTIVE membership state.
- `after` (string): Cursor for the next page (the `cursor` of the last edge from a prior call).
- `before` (string): Cursor for the previous page.
- `first` (integer): Max members to return, from the start (page size).
- `last` (integer): Max members to return, from the end.

### `get_subscription` (~49 tokens)

Get a subscription

Fetch one subscription by id: status, activated/expires/trial timestamps, plan, member, orders, coupon. Memberful GraphQL: subscription(id).

Input parameters:

- `id` (string, required): The subscription id.

### `list_subscriptions` (~166 tokens)

List subscriptions

List subscriptions (Relay connection): each edge has a cursor + node (status, expires/created timestamps, plan, member). Paginate with `first` + `after` (pass the last edge's `cursor`); `first` defaults to 50. NOTE: this uses the top-level `subscriptions` connection, which is sourced from the community SDK — validate against a live account. Memberful GraphQL: subscriptions connection.

Input parameters:

- `after` (string): Cursor for the next page (the `cursor` of the last edge from a prior call).
- `before` (string): Cursor for the previous page.
- `first` (integer): Max subscriptions to return, from the start (page size).
- `last` (integer): Max subscriptions to return, from the end.

### `list_plans` (~42 tokens)

List plans

List all plans (Memberful dashboard 'Prices'): name, interval, price (cents), for-sale flag, plan group. Memberful GraphQL: plans.

### `list_passes` (~40 tokens)

List passes

List all passes (Memberful dashboard 'Plans' — the access groups a member subscribes to): id, name. Memberful GraphQL: passes.

### `memberful_query` (~109 tokens)

Run a GraphQL query (read-only)

Escape hatch: run an arbitrary Memberful GraphQL QUERY (read-only) against your account's /api/graphql endpoint with optional variables. Mutations are REJECTED — use the dedicated write tools or memberful_graphql for those. Useful for fields not covered by the curated read tools (e.g. member-state filters beyond active).

Input parameters:

- `query` (string, required): A GraphQL query document (must be a query, not a mutation).
- `variables` (object): Variables object for the query.

### `create_member` (~67 tokens)

Create a member

MUTATES Memberful data: create a new member with an email (and optional full name). Memberful GraphQL: memberCreate(email, fullName).

Input parameters:

- `email` (string, required): The new member's email (required).
- `fullName` (string): The new member's full name.

### `update_member` (~106 tokens)

Update a member

MUTATES Memberful data: update a member's metadata (a JSON string; max 50 keys, 40-char keys, 500-char values). Only metadata is supported here; for other inline member fields use memberful_graphql. Memberful GraphQL: memberUpdate(id, metadata).

Input parameters:

- `id` (string, required): The member id (required).
- `metadata` (string): Metadata as a JSON string (max 50 keys, 40-char keys, 500-char values).

### `change_subscription_expiration` (~86 tokens)

Change subscription expiration

MUTATES Memberful data: change WHEN a subscription expires (extend or shorten access). expiresAt is a Unix timestamp in SECONDS (Int). Memberful GraphQL: subscriptionChangeExpirationTime(id, expiresAt).

Input parameters:

- `expiresAt` (integer, required): New expiration as a Unix timestamp in SECONDS (Int, required).
- `id` (string, required): The subscription id (required).

### `create_coupons` (~87 tokens)

Create coupons

MUTATES Memberful data: create one or more coupon codes for a discount. Provide the discount id (discountId) and the coupon code strings. Memberful GraphQL: createCoupons(discountId, coupons).

Input parameters:

- `codes` (array, required): Coupon code strings to create (at least one, required).
- `discountId` (string): The discount id to attach the coupons to.

### `memberful_graphql` (~82 tokens)

Run a GraphQL operation (query or mutation)

MUTATES Memberful data (potentially): escape hatch to run an arbitrary Memberful GraphQL operation — including any mutation — against your account's /api/graphql endpoint with optional variables. Prefer memberful_query for read-only calls.

Input parameters:

- `query` (string, required): A GraphQL query or mutation document.
- `variables` (object): Variables object for the operation.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-memberful/memberful#diagnostics

## Score history

- 2026-08-03: 73
- 2026-08-02: 73
- 2026-08-01: 18
- 2026-07-31: 72
- 2026-07-30: 69
- 2026-07-29: 68
- 2026-07-28: 70
- 2026-07-27: 69
- 2026-07-26: 12

## Links

- Remote endpoint: https://memberful.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-memberful/memberful/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-memberful/memberful/changelog.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-memberful/memberful