> ## Documentation Index
> Fetch the complete documentation index at: https://docs.twenty.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 5. An AI agent

> Let an agent generate documents from a chat, using your tool.

Because `generate-document` is exposed as a **tool**, an AI agent can call it.
Let's add an agent and a skill so users can just say *"generate a proposal for
Jeffery Griffin"*.

## The skill

A [skill](/developers/extend/apps/logic/skills-and-agents) is reusable
instructions — knowledge you attach to agents. Ours teaches the model how to use
the tool.

```ts filename="src/skills/document-drafting.skill.ts" theme={null}
import { defineSkill } from 'twenty-sdk/define';

export default defineSkill({
  universalIdentifier: DOCUMENT_SKILL_UNIVERSAL_IDENTIFIER,
  name: 'document-drafting',
  label: 'Document drafting',
  icon: 'IconFileText',
  content: [
    'To generate a document, call the `generate-document` tool with:',
    '- `templateId`: the id of the document template to use.',
    '- `recordId`: the id of the Person or Company the document is for.',
    '',
    'If the user names a template or person instead of an id, find the record first,',
    'then pass its id. Make sure the template target matches the record type.',
  ].join('\n'),
});
```

## The agent

An [agent](/developers/extend/apps/logic/skills-and-agents) pairs a prompt with a
model. Set `responseFormat` explicitly to avoid a build warning.

```ts filename="src/agents/document-assistant.agent.ts" theme={null}
import { defineAgent } from 'twenty-sdk/define';

export default defineAgent({
  universalIdentifier: DOCUMENT_AGENT_UNIVERSAL_IDENTIFIER,
  name: 'document-assistant',
  label: 'Document Assistant',
  description: 'Generates documents from your templates and CRM records.',
  icon: 'IconFileText',
  responseFormat: { type: 'text' },
  prompt: [
    'You are the Document Assistant for a CRM.',
    'You help users generate personalized documents from reusable templates',
    'and the data already in their CRM. Use the generate-document tool, and',
    'always confirm what you created.',
  ].join(' '),
});
```

<Note>
  The agent can only call the tool if its role allows it. We already set
  `canAccessAllTools: true` and `canBeAssignedToAgents: true` on the app's role in
  [Chapter 2](/developers/extend/apps/tutorials/document-generator/generating-documents#grant-it-access).
</Note>

## Try it

Open a chat with **Document Assistant** and ask it to draft a document for a
person in your CRM. It finds the record, calls `generate-document`, and reports
back the document it created — which now appears in your **Documents** view,
exactly like the command-menu and workflow paths.

That's the payoff of exposing logic as a tool: **one function, many front doors** —
command menu, HTTP, workflow step, and now natural language.

**After this step:** the app is feature-complete and genuinely useful. Time to
ship it.

<Card title="Next: publishing →" icon="rocket" href="/developers/extend/apps/tutorials/document-generator/publishing">
  Add marketplace metadata and publish.
</Card>