Read members, subscriptions, bookings, invoices, payments; create and update members in Members.dev. For clubs and membership organizations that run their members in Members.dev. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"members-dev": {
"url": "https://members-dev.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"members-dev": {
"type": "http",
"url": "https://members-dev.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
Find a member by id or external id and read the subscriptions of that person.
membersdev_list_members membersdev_get_member membersdev_get_member_by_external_id membersdev_list_subscriptions
List the invoices, the payments and the credit notes of a period.
membersdev_list_invoices membersdev_list_payments membersdev_list_credit_notes
List the events and the bookings and guests of one event.
membersdev_list_events membersdev_list_bookings membersdev_list_guests
List the benefits and the grants that members received.
membersdev_list_benefits membersdev_list_benefit_grants membersdev_list_products
Create a new member, or update the details of an existing one.
Changes data · membersdev_create_member membersdev_update_member
The login page asks for your Members.dev API key.
Optional: Organization id.
Create the key in the Members.dev dashboard (API keys). Leave the organization id empty unless your key covers several organizations. Your key is used only to call the API on your behalf and to derive a private account id.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Members.dev API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Turn on the Members.dev connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
membersdev_get_account | read | Get current account Get the account that owns the API key (id, email, role, organizations). Members.dev API: GET /v1/accounts/me. |
membersdev_list_organizations | read | List organizations List the organizations (venues, clubs) the key can reach. Use an organization id as the optional 'Organization id' at login to scope the key. GET /v1/organizations. |
membersdev_list_members | read | List members List and search members. Filter by text search, email, external id, status, group or product. Newest first by default. GET /v1/members. |
membersdev_get_member | read | Get member Get one member with subscriptions, groups and custom fields. GET /v1/members/{member_id}. |
membersdev_get_member_by_external_id | read | Get member by external id Get one member by the external id you stored. GET /v1/members/external/{external_id}. |
membersdev_list_products | read | List membership products List membership products (plans) with price, billing period and status. GET /v1/products. |
membersdev_get_product | read | Get membership product Get one membership product. GET /v1/products/{product_id}. |
membersdev_list_subscriptions | read | List subscriptions List member subscriptions with status, period dates and product. GET /v1/subscriptions. |
membersdev_get_subscription | read | Get subscription Get one subscription with invoices, credit notes and billing periods. GET /v1/subscriptions/{subscription_id}. |
membersdev_list_events | read | List events List events and classes in a time window. Use single_events to expand recurring events. GET /v1/events. |
membersdev_get_event | read | Get event Get one event. GET /v1/events/{event_id}. |
membersdev_list_bookings | read | List bookings List event bookings, filtered by member, event, status or time. GET /v1/bookings. |
membersdev_get_booking | read | Get booking Get one booking. GET /v1/bookings/{event_booking_id}. |
membersdev_list_invoices | read | List invoices List invoices, filtered by status, member or subscription. Amounts are in the smallest currency unit. GET /v1/invoices. |
membersdev_get_invoice | read | Get invoice Get one invoice with its lines and payment allocations. GET /v1/invoices/{invoice_id}. |
membersdev_list_payments | read | List payments List payments, filtered by member, status or invoice. GET /v1/payments. |
membersdev_list_credit_notes | read | List credit notes List credit notes, filtered by member or subscription. GET /v1/credit-notes. |
membersdev_list_groups | read | List groups List member groups. GET /v1/groups. |
membersdev_list_benefits | read | List benefits List benefits (entitlements) that products can grant. GET /v1/benefits. |
membersdev_list_benefit_grants | read | List benefit grants List benefit grants (what each member holds and has left). GET /v1/grants. |
membersdev_list_guests | read | List guests List guest registrations, filtered by status or host member. GET /v1/guests. |
membersdev_create_member | write | Create member WRITE: create a new member record. Does not charge anyone or send an invite. Creating twice makes two members, so check with membersdev_list_members first. POST /v1/members. |
membersdev_update_member | write | Update member WRITE: change fields of an existing member (only the fields you pass). Setting status to archived or rejected changes the member's access. Repeating the same call has the same result. PATCH /v1/members/{member_id}. |
membersdev_usage_status | Usage status (free-tier meter) Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. | |
membersdev_request_feature | Request a missing feature Tell usefulapi that the user needs something the Members.dev tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
membersdev_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Members.dev (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $39/month or $390/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
membersdev_cancel_subscription | Cancel the Pro subscription Cancel the caller's Members.dev Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run membersdev_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Members.dev server only. Subscribe with membersdev_upgrade (it returns a Stripe Checkout link). Cancel any time with membersdev_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running membersdev_upgrade before then undoes the cancel. Or write to [email protected].
Look up a member. Review invoices and payments. Check event bookings. Check the benefits of a membership. Add or correct a member. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Members.dev. The server calls the Members.dev API with your own Members.dev access, so it sees only the data that your account can see.
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
The login page asks for your Members.dev API key. See Before you connect for where to find it.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Members.dev API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Members.dev API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Members.dev.
Yes, if you approve it. 2 of the 23 Members.dev tools can create or change data. The other 21 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Members.dev server only. Cancel any time: Pro then runs to the end of the paid period. Run membersdev_usage_status to see how many calls you used.
Ask the AI to run membersdev_upgrade: it returns a Stripe Checkout link. To cancel, run membersdev_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with membersdev_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.