> For the complete documentation index, see [llms.txt](https://developer.parvenu.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.parvenu.io/enrichments/technology-stack.md).

# Technology Stack

See which tools a company's website runs, one company at a time or across an entire Parvenu list.

Technology Stack reads which tools a company's website runs — analytics, CMS, ecommerce, ad pixels, CRM, hosting and more — and returns them as a list of tool names (strings) in `company_tech_stack`, e.g. `["google-workspace", "nginx", "sentry", "stripe"]`.

### Endpoints

* [Individual Lookup](/enrichments/technology-stack/individual-lookup.md): pass one `domain`, get the technologies back in the response. Synchronous.
* [List Lookup](/enrichments/technology-stack/list-lookup.md): pass a `listname`; the API looks up every company website in the list and writes the result to the `company_tech_stack` column. Asynchronous.

### Use Cases

* **Target the users of a tool.** Keep only the companies whose `company_tech_stack` contains the platform you integrate with or replace, then enrich contacts on what is left.
* **Personalize on what they already run.** Mention the CMS, analytics or ecommerce platform a company uses in the first line of an email.
* **Qualify on maturity.** A site running a CRM, ad pixels and a tag manager is usually a more developed marketing operation than one running none of them.

{% hint style="info" %}
Costs **0.2 credits per company** that returns technologies. A company with no technologies found is free, and a row with no website is free. The same rate on a single company or a whole list.
{% endhint %}

{% hint style="info" %}
The lookup needs a company website. If your rows have a company name or LinkedIn URL but no website, run [Website Enrichment](/enrichments/website-enrichment.md) first.
{% endhint %}