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

# Prompt

The `Prompt` class defines a prompt that can be attached to an [Agent](/reference/agent).

```ts theme={null}
import { Prompt, anthropic } from '@ardent-ai/sdk';

const summarize = new Prompt({
  name: 'summarize',
  description: 'Create a summary of a body of text',
  model: anthropic('claude-sonnet-4-0'),
  parameters: {
    text: z.string()
  },
  result: z.string(),
  prompt: 'Summarize the following text succinctly: {text}'
});
```

## Constructor

<ParamField path="model" type="Model">
  An optional [Model](/reference/models/overview) to use to handle the prompt. If omitted, the prompt will use the
  default model defined for the [Agent](/reference/agent).
</ParamField>

<ParamField path="parameters" type="{string: ZodSchema}">
  An optional hash of parameters, each of which should be a Zod schema describing the parameter's type.
  Your agent will use these schemas to determine the right format in which to pass arguments to the prompt.
  If you omit this, your prompt will receive no arguments.
</ParamField>

<ParamField path="result" type="ZodSchema">
  An optional Zod schema describing the type of the value that should be returned from the prompt. If this is
  specified, your agent will attempt to format its result to match the shape you provide.
</ParamField>

<ParamField path="prompt" type="string">
  A template string which contains the prompt which will be passed to the model. Any values in `{curly brackets}`
  will be replaced by matching arguments.
</ParamField>