# Domain Filtered Research

Source: https://openflow.run/ja/templates/domain-filtered-research/
Content language: en
Template revision: f2bf5895d91486412f320151dafd9c6b95b42091

リサーチ

Ask Perplexity a research question with domain and one-month publication filters, and return the answer with citation URLs.

[Open Flow で使用](https://console.openflow.run/flows?importUrl=https%3A%2F%2Fraw.githubusercontent.com%2Foomol-lab%2Fawesome-workflow-templates%2Ff2bf5895d91486412f320151dafd9c6b95b42091%2Fworkflows%2Fdomain-filtered-research%2Ftemplates%2Fdomain-filtered-research.openflow.json)

*   [Open Flow JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/f2bf5895d91486412f320151dafd9c6b95b42091/workflows/domain-filtered-research/templates/domain-filtered-research.openflow.json)
*   [n8n JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/f2bf5895d91486412f320151dafd9c6b95b42091/workflows/domain-filtered-research/templates/domain-filtered-research.n8n.json)

![Open Flow の Domain Filtered Research ワークフロー](https://openflow.run/_astro/preview-light.BV1iF2iE_1HdCK1.webp)

Ask a research question using Perplexity web search, restrict search to your chosen domains, and request sources published within the last month. The result contains the first answer and its citation URLs.

## Setup and use

In Open Flow, connect Perplexity in **Research with Perplexity**. Use Run and supply:

```json
{
  "user_prompt": "What are the differences between n8n and Make?",
  "domains": "n8n.io, make.com",
  "system_prompt": "Answer using retrieved sources and distinguish facts from uncertainty."
}
```

`user_prompt` and `domains` are required. `domains` is a comma-separated list of domains or URL prefixes; surrounding spaces and empty entries are removed. Optional `system_prompt` supplies research instructions. The request uses `sonar` and a fixed `month` publication-recency filter.

In n8n, edit the same fields in **Set Params**. Configure a Header Auth credential in **Perplexity Request** with name `Authorization` and value `Bearer YOUR_PERPLEXITY_API_KEY`, then use Execute Workflow. Keep the key in the credential.

Each run makes one synchronous research request and returns `output` and `citations`. If the service omits citations, the list is empty. Missing answer text or a failed request stops the run. There are no automatic retries, stored conversations, or publishing steps.

The template uses Perplexity’s legacy Sonar-compatible completion route. Perplexity may rewrite these requests to its newer service; model behavior and sampling can change. Domain and publication-recency filters constrain search, and do not prove every generated statement. Check the answer against the cited sources before using it.

## Changes to the source

*   Trim domain filters and validate the research question before requesting an answer.
*   Build the request as a JSON object so quotes and line breaks in prompts remain valid.
*   Use neutral research instructions as the editable default.
*   Preserve the answer’s citation list and handle an omitted list.
*   Replace credential identities and outdated model notes with reusable setup instructions.

Adapted from [Query Perplexity AI from your n8n workflows](https://github.com/enescingoz/awesome-n8n-templates/blob/827110332c21cbe000ab13f6d292d5adb1f1f8db/AI_Research_RAG_and_Data_Analysis/Query%20Perplexity%20AI%20from%20your%20n8n%20workflows.json) in [enescingoz/awesome-n8n-templates](https://github.com/enescingoz/awesome-n8n-templates).

Source collection notice: © 2024–2026 Enes Cingoz, [CC BY 4.0](https://github.com/enescingoz/awesome-n8n-templates/blob/827110332c21cbe000ab13f6d292d5adb1f1f8db/LICENSE). The source export does not identify a separate template author or license. See [repository licensing](https://github.com/oomol-lab/awesome-workflow-templates/blob/f2bf5895d91486412f320151dafd9c6b95b42091/README.md#licensing) for the scope of OOMOL contributions and third-party material.

## 使用するアプリ

*   [**Perplexity**`perplexity`](https://console.openflow.run/connections/perplexity)

## 必要な設定

*   Perplexity connection
*   Research question and comma-separated search domains
*   Optional system instructions

*   research
*   perplexity
*   citations
*   web search

[GitHub で見る](https://github.com/oomol-lab/awesome-workflow-templates/blob/f2bf5895d91486412f320151dafd9c6b95b42091/workflows/domain-filtered-research/README.md)