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---
title: Přehled
description: Server-side TypeScript, který běží uvnitř Twenty — spouštěný pomocí HTTP rout, plánů CRON, databázových událostí, nástrojů AI nebo akcí pracovního postupu.
icon: bolt
---
**Logická vrstva** aplikace Twenty je kód, který *běží* — server-side TypeScript handlery reagující na HTTP požadavky, plány CRON a změny záznamů; AI dovednosti a agenti, kteří fungují uvnitř pracovního prostoru; a připojení OAuth, která umožňují vašim funkcím jednat jménem uživatele ve službách třetích stran.
```text
┌─ HTTP route ──┐
│ Cron schedule │
│ Database event │ ┌────────────────────┐
triggers ─┤ AI tool call ├─────▶│ Logic function │
│ Workflow action │ │ (your handler) │
│ Manual exec │ └────────────────────┘
└────────────────────┘ │
▼
┌────────────────────────────┐
│ Twenty API (records) │
│ Third-party API │
│ (via Connection token) │
└────────────────────────────┘
```
## V této části
<CardGroup cols={2}>
<Card title="Logické funkce" icon="bolt" href="/l/cs/developers/extend/apps/logic/logic-functions">
Základní stavební blok — typy spouštěčů, payloady a typovaný klient API.
</Card>
<Card title="Dovednosti a agenti" icon="robot" href="/l/cs/developers/extend/apps/logic/skills-and-agents">
Opakovaně použitelné pokyny pro agenty AI a asistenti s vlastními systémovými prompty.
</Card>
<Card title="Připojení" icon="plug" href="/l/cs/developers/extend/apps/logic/connections">
Přihlašovací údaje OAuth, které vaše aplikace uchovává pro služby třetích stran — Linear, GitHub, Slack a další.
</Card>
<Card title="Úložiště typu klíč–hodnota" icon="database" href="/l/cs/developers/extend/apps/logic/key-value-store">
Udržujte stav mezi spuštěními logických funkcí – cache, kurzory a nároky napříč pracovními prostory.
</Card>
<Card title="Úlohy na pozadí" icon="layer-group" href="/l/cs/developers/extend/apps/logic/background-jobs">
Zařaďte spuštění logické funkce do fronty pro pracovníky, abyste obešli časový limit na jedno spuštění.
</Card>
</CardGroup>
## Přehled typů spouštěčů
Logická funkce volí jeden nebo více spouštěčů — každá z níže uvedených položek je samostatné pole v `defineLogicFunction()`:
| Spouštěč | Kdy se spouští | Nastavení |
| --------------------------- | ----------------------------------------------------------------- | ------------------------------- |
| **HTTP route** | Požadavek dorazí na váš koncový bod `/s/\<path>` | `httpRouteTriggerSettings` |
| **Cron** | CRON výraz se shoduje | `cronTriggerSettings` |
| **Událost databáze** | Záznam v pracovním prostoru je vytvořen, aktualizován nebo smazán | `databaseEventTriggerSettings` |
| **Nástroj AI** | Funkce Twenty AI se rozhodne zavolat vaši funkci | `toolTriggerSettings` |
| **Akce pracovního postupu** | Krok pracovního postupu vyvolá vaši funkci | `workflowActionTriggerSettings` |
Funkce běží v izolovaných sandboxovaných procesech Node.js a přistupují k pracovnímu prostoru přes typovaného klienta API omezeného na roli deklarovanou v [`defineApplication()`](/l/cs/developers/extend/apps/config/application).
<Note>
**Instalační hooky** — kód, který běží před nebo po instalaci — sdílejí toto běhové prostředí, ale používají vlastní funkce `define` a nacházejí se pod [Config → Install Hooks](/l/cs/developers/extend/apps/config/install-hooks).
</Note>