# Memberstack AI integration on Definable

> Memberstack is a platform that enables developers to add user authentication, payments, and member management to their websites without writing backend code.

## What this connects

Memberstack is a platform that enables developers to add user authentication, payments, and member management to their websites without writing backend code.

Vendor: https://www.memberstack.com/

## Tools available

**8** tools available. First 8:

- `MEMBERSTACK_CREATE_MEMBER` — Create Member — Tool to create a new member in your application. Use after gathering email, password, optional plans, custom fields, metadata, and redirect.
- `MEMBERSTACK_DELETE_MEMBER` — Delete Member — Tool to permanently delete a member from your application. Use after confirming you no longer need the member's data and have the member ID.
- `MEMBERSTACK_GET_MEMBER` — Get Member — Tool to retrieve a specific member by ID or email. Use when you need to fetch member profile details for a given identifier (ID or email). Example: "Get member mem_sb_12345".
- `MEMBERSTACK_LIST_DATA_TABLES` — List Data Tables — Tool to retrieve all data tables in your Memberstack application. Returns table metadata including keys, field definitions, and access control rules.
- `MEMBERSTACK_LIST_MEMBERS` — List Members — Tool to retrieve a paginated list of all members in your application. Use when you need to iterate through members with cursor-based pagination.
- `MEMBERSTACK_LIST_PLANS` — List Plans — Tool to list all available membership plans. Use when you need to retrieve plan IDs and details before assigning or comparing plans.
- `MEMBERSTACK_REMOVE_FREE_PLAN` — Remove Free Plan — Tool to remove a free plan from an existing member. Use after confirming the member's subscription status. Example: "Remove free plan pln_sb_67890 from member mem_sb_12345".
- `MEMBERSTACK_UPDATE_MEMBER` — Update Member — Tool to update an existing member's information. Use when you have a member ID and need to modify their email, customFields, metaData, JSON data, or loginRedirect.

## Auth

Auth schemes: `API_KEY`.

## How agents use Memberstack

Inside a Definable workflow, Memberstack is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Memberstack** — the Researcher (GPT-5.5) pulls context from Memberstack (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Memberstack** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Memberstack (create record, post message, draft email).
- **Designer / Engineer → Distributor → Memberstack** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Memberstack (attach file, open PR comment, post status).

The Verifier checks every Memberstack call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- security & identity tools — https://definable.ai/apps/category/security-&-identity-tools/
- payment processing — https://definable.ai/apps/category/payment-processing/

## Related

- HTML page: https://definable.ai/apps/memberstack/
- Same category (security & identity tools): https://definable.ai/apps/category/security-&-identity-tools/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt