> Index of every Falcon docs page, for assistants: https://falcon.com/docs/llms.txt

# Model rules

On Limits, Model rules apply to every model call. Only routes that keep no data, and US only, each leave out a way of running a model.

Open **Connections**, then **Model providers**, then the **Limits** tab. The section is **Model rules**.

## What the section says

**Every model call follows these. A way of running a model that breaks one is never used, and a model with no way left can't be added.** A company that has not saved rules has both switches off. On a sub-company, the parent's rules still apply. See [Use the parent company's models](https://falcon.com/docs/sub-company-models).

## Only routes that keep no data

**Only routes that keep no data** is off until you turn it on. **Calls use only routes and providers that keep nothing. Your own key counts once you've confirmed its provider keeps no data.** On **Your keys**, a key can say **Our agreement with** the provider **keeps no data**. **Tick only if your contract with the provider says so. Models on this key then count as keeping nothing.**

## US only

**US only** is off until you turn it on. **Calls use only routes known to run in the US. Today that's the included Amazon Bedrock models; anything else is left out while this is on.**

## What you see elsewhere

- On **Add models**, when either switch is on, the page says **Your company's model rules are on, so only models that can run within them are listed.**
- A model that may keep data says **It may keep data, and your company only allows routes that keep no data.**
- A model that is not known to run in the US says **It is not known to run in the US, and your company only allows US routes.**
- On **Models**, a route the rules refuse stays in **Runs through** and cannot be chosen. It is marked **outside your model rules**. See [Runs through](https://falcon.com/docs/runs-through).

## Related

- [Add models](https://falcon.com/docs/add-models)
- [Runs through](https://falcon.com/docs/runs-through)
- [Open Spending](https://falcon.com/docs/open-spending)
- [Use the parent company's models](https://falcon.com/docs/sub-company-models)
- [Connections](https://falcon.com/docs/connections)