> For the complete documentation index, see [llms.txt](https://balancer.gitbook.io/balancer-v2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://balancer.gitbook.io/balancer-v2/getting-started/faqs/oracles.md).

# Oracles

## What are Balancer Price Oracles?

Balancer V2 introduces price oracles that are resistant to sandwich attacks by leveraging accumulators. There are two types of oracles that can be queried:

* Instant — A more up-to-date price but less resilient to manipulation
* Resilient — Less up-to-date but more resilient to manipulation

## How do I decide which type of Oracle to choose?

Choosing a price type varies depending on each use case. For example, lending protocols will likely use a Resilient Oracle while prediction markets could use the Instant Price Oracle.

You can see the oracle pool API [here](broken://pages/-MXAJDLitvQkyuBbg5s-).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://balancer.gitbook.io/balancer-v2/getting-started/faqs/oracles.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
