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

# BarCommitmentLevel

> The commitment level of a streamed bar update - only Solana and Base support values other than Confirmed. Processed returns Base Flashblocks. Preprocessed is Solana-only.

<div data-generated>
  ## GraphQL

  ```
  enum BarCommitmentLevel {
    Preprocessed
    Processed
    Confirmed
  }
  ```

  ### Used By

  **Returned by**

  * [onBarsUpdated](/api-reference/subscriptions/onbarsupdated.md): Live-streamed bar chart data to track price changes over time. Processed updates are projected into `aggregates` using the confirmed bar shape.
  * [onTokenBarsUpdated](/api-reference/subscriptions/ontokenbarsupdated.md): Live-streamed aggregate bar chart data to track price changes over time for a token.

  **Used as input by**

  * [onBarsUpdated](/api-reference/subscriptions/onbarsupdated.md): Live-streamed bar chart data to track price changes over time. Processed updates are projected into `aggregates` using the confirmed bar shape.
  * [onTokenBarsUpdated](/api-reference/subscriptions/ontokenbarsupdated.md): Live-streamed aggregate bar chart data to track price changes over time for a token.
</div>