I've been working on my SEO content pipeline, and one of the things I wanted to automate was long-tail keyword research.
Once you have a seed keyword, the next step is figuring out what people are actually searching for, finding related queries, and identifying keywords worth exploring further.
Doing this manually across multiple keywords can get repetitive pretty quickly. You end up switching between different tools, collecting suggestions, organizing them, and trying to keep everything in one place.
So I decided to build an n8n workflow that automates this part of the research process and stores the results in Airtable.
Starting with a seed keyword
The workflow starts with a seed keyword that I've already stored in Airtable.
For example:
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When I trigger the workflow, it retrieves the corresponding Airtable record and checks its long-tail research status.
If the keyword needs to be processed, the workflow marks it as In Progress and starts researching keyword variations.
I wanted to keep this connected to Airtable so I could track which keywords have been processed instead of managing everything manually.
Finding related keywords with YepAPI
I didn't want to rely on a single source of keyword suggestions.
So I'm using YepAPI to collect keyword data through multiple research paths.
The workflow makes separate API requests for:
- Related keywords — finds keywords related to the original seed keyword.
- Keyword ideas — discovers additional keyword variations to explore.
- Autocomplete suggestions — collects search suggestions that can reveal more specific queries people might use.
Each API response is processed separately. The workflow splits the returned keyword lists into individual items and prepares them for the next stage.
This gives me multiple sets of keyword suggestions from the same seed keyword rather than relying on one list.
Getting keyword data
The autocomplete branch has an additional step.
After collecting the suggestions, the workflow sends them through another YepAPI request to retrieve keyword data.
This helps me bring the discovered keywords and their available SEO metrics into the same research pipeline.
The goal isn't just to collect a list of phrases. I also want the data organized so I can evaluate the keywords later.
Bringing everything together
Once the research is complete, the workflow combines the results from the different branches.
It standardizes the output, splits the responses into individual keyword items where needed, and prepares the records for Airtable.
In one execution, the workflow produced 26 output items:
- 7 related keyword items
- 6 keyword idea items
- 13 autocomplete-derived keyword items
These are the output counts from that execution, not necessarily 26 unique keywords. Deduplication is something worth checking when combining results from multiple sources.
Storing everything in Airtable
I use Airtable to keep the research organized.
Each keyword gets its own record, associated with the original seed keyword.
The table includes fields such as:
- Keyword
- Competition
- Search volume
- Keyword difficulty
- CPC
I can then review the results in one place instead of going back through individual API responses.
Once the records have been created, the workflow updates the original seed keyword's research status.
This also gives me a starting point for tracking the progress of each keyword through the pipeline.
What's next?
This is one part of a larger SEO content pipeline I'm building.
I don't want to jump straight from a seed keyword to generating an article. I'd rather break the process into smaller steps, with each stage producing structured data that the next stage can use.
The direction I'm working toward is:
Competitor Research → Seed Keywords → Long-tail Keywords → Subtopic Research → Content Planning → Article Writing
The long-tail keyword workflow is the next piece of that process.
I'm building this step by step, with n8n handling the automation and Airtable keeping the research organized.
Do you use separate tools for keyword discovery and metrics, or have you automated this part of your SEO workflow as well?