SKILL-087 Teams, organizations, and multi-tenancy Locked skill

Tenant isolation

If a query can run without a tenant scope, it eventually will — make the scope impossible to omit, not just easy to remember.

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What this skill helps you build

Make cross-tenant data leaks structurally impossible: scope every read and write by tenant, never trust client-supplied ids, and back it with database-level defense in depth.

The production takeaway

If a query can run without a tenant scope, it eventually will — make the scope impossible to omit, not just easy to remember.

02

Inside this skill

The full skill expands these implementation areas with decisions, edge cases, prompts, tests, and framework-specific code.

Teams, organizations, and multi-tenancy
What this helps you build

A multi tenant application where one customer can never read or write another customer's data — by construction, not by discipline. Instead of hoping every developer remembers to a

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Teams, organizations, and multi-tenancy
When to use this

Use this the moment a single database or schema holds data belonging to more than one customer, organization, or workspace. That covers almost every B2B SaaS. Reach for it especial

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Teams, organizations, and multi-tenancy
The core idea

Every query is scoped by tenant, and the scope is not optional. A cross tenant leak is almost never a clever attack — it's a forgotten WHERE organization id = ? . So the goal is to

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Unlock the full implementation

Paid access includes the complete skill body, implementation prompt, common mistakes, production checklist, and code examples where this skill includes them.