February 24, 2026

# Segments, npm, and custom parameters

Save filter combos as segments, see goal custom parameters, DataFast on npm, and more!

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### Segments — save your filter combos 🎛️

If you find yourself applying the same filters over and over, you can now save them as a **segment**. A segment is just a combination of [filters](/content/docs/datafast-filters/index.html) you can reapply in one click.

For example, save "customers from USA" with a payment goal filter + United States country filter, and next time you open your dashboard it's right there waiting for you.

### Goal custom parameters in your dashboard 🎯

When you pass [custom parameters](/content/docs/custom-goals#advanced-usage-with-custom-parameters/index.html) to a goal, you can now see them directly in your dashboard. Hover on any goal and click the parameters icon to get a breakdown.

Say you're tracking an `initiate_checkout` goal with a `plan` parameter — you'll see exactly how many people checked out on each plan. Super useful to understand what your visitors actually pick.

### NPM package 📦

You can now install DataFast as an [npm package](/content/docs/npm/index.html):

```bash
npm install datafast
```

Track page views, custom goals with parameters, identify users — all with full TypeScript support. Works on client and server side. [Check the docs](/content/docs/npm/index.html) for code examples.

### Apps built on the API 🏙️

Now that the [DataFast API](/content/docs/api-introduction/index.html) is fully open, I had some fun building apps on top of it. There's one where your visitors show up in a [3D office](https://macrodata.datafa.st/), one where your pages become [buildings in a city](https://datacity.datafa.st/), one that looks like a [stock market terminal](https://datamarket.datafa.st/) (I use this one in coffee shops to pretend I'm a trader), and one where you have to [squat to unlock your analytics](https://datasquat.datafa.st/).

They're all free — just plug in your API key. [See all apps](/content/docs/apps-built-on-api/index.html).

If you build something with the DataFast API, send me a message on [𝕏](https://x.com/marclou) or via the chat — I'd love to reshare your work.

Something missing? [Suggest features](https://feedback.datafa.st/) ✍️

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