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105 lines
7.1 KiB
Plaintext
105 lines
7.1 KiB
Plaintext
---
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title: Architettura
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description: How Twenty apps work — sandboxing, lifecycle, and the building blocks.
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icon: sitemap
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---
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Twenty apps are TypeScript packages that extend your workspace with custom objects, logic, UI components, and AI capabilities. They run on the Twenty platform with full sandboxing and permission controls.
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## How apps work
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An app is a collection of **entities** declared using `defineEntity()` functions from the `twenty-sdk` package. The SDK detects these declarations via AST analysis at build time and produces a **manifest** — a complete description of what your app adds to a workspace.
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```
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your-app/
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├── src/
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│ ├── application-config.ts ← defineApplication (required, one per app)
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│ ├── roles/ ← defineRole
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│ ├── objects/ ← defineObject
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│ ├── fields/ ← defineField
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│ ├── logic-functions/ ← defineLogicFunction
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│ ├── front-components/ ← defineFrontComponent
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│ ├── skills/ ← defineSkill
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│ ├── agents/ ← defineAgent
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│ ├── views/ ← defineView
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│ ├── navigation-menu-items/ ← defineNavigationMenuItem
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│ └── page-layouts/ ← definePageLayout
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├── public/ ← Static assets (images, icons)
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└── package.json
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```
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<Note>
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**File organization is up to you.** Entity detection is AST-based — the SDK finds `export default defineEntity(...)` calls regardless of where the file lives. The folder structure above is a convention, not a requirement.
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</Note>
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## Entity types
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| Entità | Scopo | Documentazione |
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| ------------------------ | ----------------------------------------- | ------------------------------------------------------------ |
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| **Application** | App identity, permissions, variables | [Data Model](/l/it/developers/extend/apps/data-model) |
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| **Role** | Permission sets for objects and fields | [Data Model](/l/it/developers/extend/apps/data-model) |
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| **Oggetto** | Custom data tables with fields | [Data Model](/l/it/developers/extend/apps/data-model) |
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| **Campo** | Extend existing objects, define relations | [Data Model](/l/it/developers/extend/apps/data-model) |
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| **Logic Function** | Server-side TypeScript with triggers | [Funzioni logiche](/l/it/developers/extend/apps/logic-functions) |
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| **Front Component** | Sandboxed React UI in Twenty's page | [Front Components](/l/it/developers/extend/apps/front-components) |
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| **Skill** | Reusable AI agent instructions | [Skills & Agents](/l/it/developers/extend/apps/skills-and-agents) |
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| **Agent** | AI assistants with custom prompts | [Skills & Agents](/l/it/developers/extend/apps/skills-and-agents) |
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| **View** | Pre-configured record list views | [Layout](/l/it/developers/extend/apps/layout) |
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| **Navigation Menu Item** | Custom sidebar entries | [Layout](/l/it/developers/extend/apps/layout) |
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| **Page Layout** | Custom record page tabs and widgets | [Layout](/l/it/developers/extend/apps/layout) |
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## Sandboxing
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* **Logic functions** run in isolated Node.js processes on the server. They only access data through the typed API client, scoped to the app's role permissions.
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* **Front components** run in Web Workers using Remote DOM — sandboxed from the main page but rendering native DOM elements (not iframes). They communicate with Twenty via a message-passing host API.
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* **Permissions** are enforced at the API level. The runtime token (`TWENTY_APP_ACCESS_TOKEN`) is derived from the role defined in `defineApplication()`.
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## App lifecycle
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```
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┌─────────────────────────────────────────────────────────┐
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│ Development │
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│ npx create-twenty-app → yarn twenty dev (live sync) │
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├─────────────────────────────────────────────────────────┤
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│ Build & Deploy │
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│ yarn twenty build → yarn twenty deploy │
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├─────────────────────────────────────────────────────────┤
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│ Install flow │
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│ upload → [pre-install] → metadata migration → │
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│ generate SDK → [post-install] │
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├─────────────────────────────────────────────────────────┤
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│ Publish │
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│ npm publish → appears in Twenty marketplace │
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└─────────────────────────────────────────────────────────┘
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```
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* **`yarn twenty dev`** — watches your source files and live-syncs changes to a connected Twenty server. The typed API client is regenerated automatically when the schema changes.
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* **`yarn twenty build`** — compiles TypeScript, bundles logic functions and front components with esbuild, and produces a manifest.
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* **Pre/post-install hooks** — optional logic functions that run during installation. See [Logic Functions](/l/it/developers/extend/apps/logic-functions) for details.
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## Prossimi passaggi
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<CardGroup cols={2}>
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<Card title="Modello dati" icon="database" href="/l/it/developers/extend/apps/data-model">
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Define objects, fields, roles, and relations.
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</Card>
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<Card title="Funzioni logiche" icon="bolt" href="/l/it/developers/extend/apps/logic-functions">
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Server-side functions with HTTP, cron, and event triggers.
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</Card>
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<Card title="Componenti front-end" icon="window-maximize" href="/l/it/developers/extend/apps/front-components">
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Sandboxed React components inside Twenty's UI.
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</Card>
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<Card title="Disposizione" icon="table-columns" href="/l/it/developers/extend/apps/layout">
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Views, navigation items, and record page layouts.
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</Card>
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<Card title="Skill e agenti" icon="robot" href="/l/it/developers/extend/apps/skills-and-agents">
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AI skills and agents with custom prompts.
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</Card>
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<Card title="CLI & Testing" icon="terminal" href="/l/it/developers/extend/apps/cli-and-testing">
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CLI commands, testing, assets, remotes, and CI.
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</Card>
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<Card title="Pubblicazione" icon="rocket" href="/l/it/developers/extend/apps/publishing">
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Deploy to a server or publish to the marketplace.
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</Card>
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</CardGroup>
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