> ## Documentation Index
> Fetch the complete documentation index at: https://docs.noisemaker.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Page evaluation

> Run an on-demand desktop Lighthouse check without changing the SEO pipeline audit.

Page evaluation is a workspace diagnostic stored by the web application. It is useful for checking a submitted set of URLs now. It does not write the pipeline D4 audit or recalculate the SEO score.

## What it runs

The worker launches desktop Lighthouse at a fixed 1440 by 900 viewport with these categories:

* Performance
* Accessibility
* Best practices
* SEO

It records LCP, CLS, TBT, and FCP with the category results.

## Technical checks

The evaluation also records nine direct checks:

| Check                    | Rule                         |
| ------------------------ | ---------------------------- |
| <code>robots.txt</code>  | File can be checked          |
| <code>sitemap.xml</code> | File can be checked          |
| <code>llms.txt</code>    | File can be checked          |
| Meta robots              | Page directive               |
| Canonical                | Canonical link               |
| Title                    | 10 to 70 characters          |
| Description              | 50 to 160 characters         |
| HTTPS                    | Submitted page uses HTTPS    |
| Viewport                 | Viewport metadata is present |

Only one page-evaluation job can run per workspace. The list returns the latest 20 results.

## Difference from D4 audits

| Property             | Page evaluation           | D4 technical audit                        |
| -------------------- | ------------------------- | ----------------------------------------- |
| Trigger              | On demand from app or API | SEO pipeline                              |
| Storage              | <code>app.sqlite3</code>  | <code>geo.sqlite3</code>                  |
| Device               | Local desktop Lighthouse  | Mobile in the current web worker          |
| Checks               | 9                         | 11 frozen checks                          |
| URL selection        | User-submitted array      | Up to 21 canonical URLs                   |
| Score impact         | Diagnostic only           | Technical SEO component                   |
| Recommendation links | None in its contract      | Failed checks can link to recommendations |

<Warning>
  Do not present a page-evaluation result as the persisted technical SEO component. Run the D4 audit and score pipeline for that claim.
</Warning>

## Chat access

Chat can read a known result with <code>get\_page\_evaluation</code>. It cannot use the tool to cross workspace boundaries. The public API currently lists recent evaluations rather than exposing a separate single-result route.