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Amends decision 6 of 0116. Corrects its “Pro and later” placement (contradiction C-19).

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Context

0116 (Accepted) made tenant content types a Pro feature, later. The owner’s content answer (mem L733, 2026-10-20) moves them to day one, as data only, and adds headless delivery.

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Decision

  1. Tenant types from day one. Tenants define content types at runtime. A type is data only: registered field types, validation, relations, localisation, revisions and publishing. It is stored as typed JSON with generated indexes. It holds no code and no logic.
  2. Business rules stay in code. @ContentType is used for business rules that need code.
  3. Headless delivery. A public REST API, a CDN with purge, signed previews, scheduled publishing, webhooks (ADR 0224) and an SDK.

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Consequences

  • A tenant’s new content type needs no deploy, because it is data.
  • Because a type holds no code, a type cannot run anything that the platform has not reviewed.

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Enforcement

planned — the validator rejects a content type that carries a function or a template expression; the preview signature test.

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Supersedes and sources

Supersedes: none. Amends decision 6 of 0116. Sources: owner content answer (stackra-decisions-2026-10-19.md L733, 2026-10-20). Contradiction C-19.