# Sites with invalid Content Signals

A site-wide report: one row per host, over the access rows the crawl emitted.

## What this report returns

Content Signals are Cloudflare's robots.txt extension for stating how AI may use your content: search, ai-input, and ai-train, each set to yes or no.

A row appears here when any of these is wrong, worst first:

-   **Conflicting**The same key is set to two different values in one group (e.g. `search=yes` and `search=no`), which is contradictory and may be ignored entirely.**Fix** Keep one value per key per group.
-   **Outside Group**A `Content-Signal` line sits before any `User-agent` group. Cloudflare only documents the signal inside a group, so a crawler that reads it per group may never see it.**Fix** Move it inside the group it is meant for, e.g. under `User-agent: *`.
-   **Unknown Value**A recognized key carries a value outside its vocabulary (search/ai-input/ai-train take yes|no; use takes immediate|reference|full), so the preference is dropped.**Fix** Use the documented value, e.g. `Content-Signal: ai-train=no`.
-   **Empty Key/Value**An entry is missing its key or value (e.g. `"=no"`, `"search="`), so nothing registers.**Fix** Write each entry as `key=value`, e.g. `search=yes`, `ai-train=no`.

## The columns it shows

Every defect this technology can carry is a column in the grid, worst first, so nothing is hidden behind a filter you have to know to apply.

-   Host`host`
-   Content Signals Valid`contentSignalsValid`
-   Content Signals Findings`contentSignalsFindings`
-   Content Signal Declared Values`contentSignalDeclaredValues`
-   Content Signal Unknown Value Samples`contentSignalUnknownValueSamples`
-   Content Signal Conflicting`contentSignalConflicting`
-   Content Signal Outside Group`contentSignalOutsideGroup`
-   Content Signal Unknown Value`contentSignalUnknownValue`
-   Content Signal Empty Key/Value`contentSignalEmptyKeyValue`

## About Content Signals

Cloudflare's robots.txt vocabulary for search, AI input and AI training.

[Read how Content Signals is checked](https://agentic-readiness.lumar.io/docs/access/content-signal), including the specification it is validated against and a worked correct and broken example.

## Running it

This report comes with Agentic Readiness in Lumar and appears on every crawl of any project that has it turned on. [See the whole set](https://agentic-readiness.lumar.io/scan-at-scale), or check a single URL with the [scanner on this site](https://agentic-readiness.lumar.io/), which runs the same code with no account.

[Get Lumar pricing →](https://www.lumar.io/pricing/)