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

# Protocol Metrics

> Returns protocol-wide aggregate statistics across all Hadron pools.

## Query Parameters

<ParamField query="cluster" type="string" default="mainnet-beta">
  Solana cluster — `mainnet-beta` or `devnet`.
</ParamField>

## Response

<ResponseField name="total_tvl" type="number">
  Total value locked across all pools in USD.
</ResponseField>

<ResponseField name="volume_24h" type="number">
  Total 24-hour trading volume across all pools in USD.
</ResponseField>

<ResponseField name="fee_24h" type="number">
  Total 24-hour fees collected across all pools in USD.
</ResponseField>

<ResponseField name="swap_count_24h" type="integer">
  Total number of swaps in the last 24 hours.
</ResponseField>

<ResponseField name="total_pools" type="integer">
  Total number of Hadron pools.
</ResponseField>

<ResponseExample>
  ```json theme={null}
  {
    "total_tvl": 0,
    "volume_24h": 364.16,
    "fee_24h": 0.59,
    "swap_count_24h": 6,
    "total_pools": 3
  }
  ```
</ResponseExample>