# Summarization Chain - Workflow node | Docs - nodulz

Source: https://nodulz.com/docs/nodes/ai_summarization

Language: en

Summarize long text

## Usage and specifics

This recipe configures a model call for extraction, summary, classification, sentiment or contextual answers. Supply prompts and recipe fields; a retriever must provide context for document answers.

Technical type : `ai_summarization`. Runtime : `nodulz`.

## Credentials and prerequisites

- [Create and configure the credential : ai-model](/docs/credentials/ai-model)

Create credentials in your nodulz instance’s Credentials area, then select them on the node. Availability depends on ownership and sharing. See the [credentials guide](/docs/credentials) for access and rotation.

## Parameters

Names below are technical keys. Defaults are not a ready-to-run configuration: complete fields required by your operation. Paths containing [] describe list items; some fields depend on the selected mode.

| Parameter | Type | Default | Values / limits |
| --- | --- | --- | --- |
| `credentialId` | `string` | - | - |
| `model` | `string` | `""` | - |
| `systemPrompt` | `string` | `""` | - |
| `userPrompt` | `string` | `""` | - |
| `temperature` | `number` | - | -; ≥ 0, ≤ 2 |
| `maxTokens` | `number` | - | -; ≥ 1 |
| `timeoutSeconds` | `number` | - | -; ≥ 1, ≤ 3600 |
| `attachments` | `array` | `[]` | - |
| `attachments[].kind` | `enum` | `"text"` | `text`, `image_url`, `image_base64`, `document_url`, `document_base64` |
| `attachments[].sourceMode` | `enum` | `"manual"` | `manual`, `node`, `file` |
| `attachments[].source` | `string` | `""` | - |
| `attachments[].mimeType` | `string` | - | - |
| `attachments[].name` | `string` | - | - |
| `messages` | `array` | `[]` | - |
| `messages[].role` | `enum` | `"user"` | `user`, `assistant`, `system` |
| `messages[].content` | `string` | `""` | - |
| `responseFormat` | `enum` | `"text"` | `text`, `json` |
| `jsonSchema` | `string` | `""` | - |
| `categories` | `array` | `[]` | - |
| `contextPath` | `string` | `""` | - |
| `retrieverSource` | `string` | `""` | - |
| `minScore` | `number` | - | - |
| `targetLength` | `number` | - | -; ≥ 1, ≤ 100000 |
| `targetLanguage` | `string` | `"French"` | -; max 100 |

## Configuration help

| Setting | Purpose and guidance |
| --- | --- |
| `contextPath`<br>Context source | Path to documents or excerpts with text and metadata, for example nodes.splitter.documents. Citations preserve URL, document and position. The answer abstains when context is insufficient. |
| `retrieverSource`<br>Alternative retrieval source | Alternative context source used when the previous field is empty. Example: nodes.retriever.matches. Excerpts and metadata are preserved. |
| `minScore`<br>Minimum score (optional) | Excludes passages below this threshold. Scores depend on the retrieval method. Passages without a score are kept. Without sufficient evidence, the answer sets abstained and contains no text. |
| `targetLanguage`<br>Target language | Translation language. Choose a suggestion, enter another language or use an expression. Instructions ask the model to preserve formatting and names. |
| `targetLength`<br>Target length (words) | Word limit requested from the model for the summary. Leave empty for a concise summary without a word limit. The exact length depends on the model. |

## Initial configuration

Initial catalog configuration example, to adapt before running. Keep secrets in credentials.

```json
{
  "model": "",
  "systemPrompt": "",
  "userPrompt": "",
  "attachments": [],
  "messages": [],
  "responseFormat": "text",
  "jsonSchema": "",
  "categories": [],
  "contextPath": "",
  "retrieverSource": "",
  "targetLanguage": "French"
}
```

## Verification

Test with representative data. Check node output in the inspector and logs, then use editor mapping for downstream fields. A trigger test with a simulated payload does not validate external service delivery.

See also : [Expressions and data](/docs/expressions), [Executions](/docs/executions), [Node catalog](/docs/nodes).

## Explore further

- [Features - nodulz](https://nodulz.com/product/overview)
- [Node catalog - nodulz](https://nodulz.com/product/catalog)
- [MCP server - nodulz](https://nodulz.com/product/mcp)
- [Pricing - nodulz](https://nodulz.com/pricing)
- [Use cases and workflow automation - nodulz](https://nodulz.com/use-cases)
- [Choose what your workflows can do. - nodulz](https://nodulz.com/compare)
- [Documentation - nodulz](https://nodulz.com/docs)