> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# Prefabs

> Pre-built agent templates for common conversational patterns.

[agentbase]: /docs/server-sdks/reference/typescript/agents/agent-base

[functionresult]: /docs/server-sdks/reference/typescript/agents/function-result

Prefabs are ready-to-use agent classes that implement common conversational patterns.
Each prefab extends [`AgentBase`][agentbase], so you can
customize them with additional prompt sections, tools, skills, and languages. Use them
directly for rapid prototyping or subclass them for production use.

```typescript {2-6}
import {
  ConciergeAgent,
  FAQBotAgent,
  InfoGathererAgent,
  ReceptionistAgent,
  SurveyAgent,
} from '@signalwire/sdk';
```

| Prefab                                                                                         | Purpose                                             | Built-in Tools                                                                                        |
| ---------------------------------------------------------------------------------------------- | --------------------------------------------------- | ----------------------------------------------------------------------------------------------------- |
| [ConciergeAgent](/docs/server-sdks/reference/typescript/agents/prefabs/concierge-agent)        | Venue concierge with services, amenities, and hours | `check_availability`, `get_directions`                                                                |
| [FAQBotAgent](/docs/server-sdks/reference/typescript/agents/prefabs/faq-bot-agent)             | Answer questions using keyword matching             | `search_faq`, `escalate` (optional)                                                                   |
| [InfoGathererAgent](/docs/server-sdks/reference/typescript/agents/prefabs/info-gatherer-agent) | Collect answers to a list of questions              | `start_questions`, `submit_answer`                                                                    |
| [ReceptionistAgent](/docs/server-sdks/reference/typescript/agents/prefabs/receptionist-agent)  | Front-desk check-in, directory, and transfers       | `collect_caller_info`, `transfer_call`, `check_in_visitor` (optional)                                 |
| [SurveyAgent](/docs/server-sdks/reference/typescript/agents/prefabs/survey-agent)              | Conduct surveys with branching and scoring          | `validate_response`, `log_response`, `answer_question`, `get_current_question`, `get_survey_progress` |

Each prefab also has a corresponding factory function (e.g., `createConciergeAgent()`)
that creates and returns a configured instance.

> **Tip**
>
> All prefabs can be extended by subclassing. Add custom tools with `defineTool()`, extra
> prompt sections with `promptAddSection()`, and skills with `addSkill()`.

#### [ConciergeAgent](/docs/server-sdks/reference/typescript/agents/prefabs/concierge-agent)

Multi-department routing with knowledge base, hours of operation, and call transfer.

#### [FAQBotAgent](/docs/server-sdks/reference/typescript/agents/prefabs/faq-bot-agent)

Answer questions using keyword matching with optional escalation.

#### [InfoGathererAgent](/docs/server-sdks/reference/typescript/agents/prefabs/info-gatherer-agent)

Collect named fields from a caller with validation and completion callbacks.

#### [ReceptionistAgent](/docs/server-sdks/reference/typescript/agents/prefabs/receptionist-agent)

Front-desk check-in, directory lookup, and call transfers.

#### [SurveyAgent](/docs/server-sdks/reference/typescript/agents/prefabs/survey-agent)

Conduct surveys with branching, scoring, and multiple question types.

---

## Extending Prefabs

All prefabs inherit from [`AgentBase`][agentbase],
so you can add custom tools, prompt sections, and skills:

```typescript {4}
import { FAQBotAgent } from '@signalwire/sdk';
import { FunctionResult } from '@signalwire/sdk';

class MyFAQBot extends FAQBotAgent {
  protected override defineTools(): void {
    super.defineTools();

    this.defineTool({
      name: 'escalate_to_human',
      description: 'Escalate to a human agent',
      parameters: { type: 'object', properties: {} },
      handler: () => {
        const result = new FunctionResult('Transferring you to an agent now.');
        result.connect('+15551234567');
        return result;
      },
    });
  }
}

const agent = new MyFAQBot({
  faqs: [
    { question: 'What is your return policy?', answer: '30-day returns.' },
  ],
});

agent.promptAddSection('Brand', { body: 'You represent Acme Corp.' });
agent.addSkill('datetime');

agent.serve();
```

> Pre-built agent templates for common conversational patterns.

## Docs

- [ConciergeAgent](https://signalwire.com/docs/server-sdks/reference/typescript/agents/prefabs/concierge-agent.md): A virtual concierge for a venue — provides information about services, amenities, hours of operation, and directions.
- [FAQBotAgent](https://signalwire.com/docs/server-sdks/reference/typescript/agents/prefabs/faq-bot-agent.md): An FAQ bot agent that answers frequently asked questions by matching user queries against a provided knowledge base using word-overlap similarity scoring.
- [InfoGathererAgent](https://signalwire.com/docs/server-sdks/reference/typescript/agents/prefabs/info-gatherer-agent.md): A prefab agent that collects answers to a series of questions — supporting both static and dynamic (per-request callback) modes.
- [ReceptionistAgent](https://signalwire.com/docs/server-sdks/reference/typescript/agents/prefabs/receptionist-agent.md): A front-desk agent that greets callers, looks up departments, and transfers calls. Optional visitor check-in.
- [SurveyAgent](https://signalwire.com/docs/server-sdks/reference/typescript/agents/prefabs/survey-agent.md): A survey agent that conducts surveys with support for multiple question types, conditional branching based on answers, per-answer scoring, and a completion callback.