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

# Speeding Up Quotes

> Get faster quote responses by using fast-quote mode

By default, the Biconomy API performs an exhaustive query across all underlying liquidity providers (DEXs, aggregators, bridges) to find the optimal route for your swap. While this ensures the best possible price, it takes longer to respond.

For applications where speed is more important than finding the absolute best price, you can use **fast-quote mode** to get the first viable quote immediately.

## Using Fast-Quote Mode

Add `routeSelectionMode: "fast-quote"` to the `data` field of your request:

```typescript theme={null}
const quote = await fetch('https://api.biconomy.io/v1/quote', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    mode: 'eoa',
    ownerAddress: userAddress,
    composeFlows: [{
      type: '/instructions/intent-simple',
      data: {
        srcChainId: 8453,
        dstChainId: 42161,
        srcToken: USDC_BASE,
        dstToken: ETH_ARBITRUM,
        amount: '100000000',
        slippage: 0.01,
        routeSelectionMode: "fast-quote"  // Return first viable quote
      }
    }]
  })
});
```

## Comparison

| Mode           | Behavior                               | Response Time | Price Optimization                  |
| -------------- | -------------------------------------- | ------------- | ----------------------------------- |
| **Default**    | Queries all providers, compares routes | Slower        | Best price guaranteed               |
| **fast-quote** | Returns first viable route             | Faster        | Good price, not necessarily optimal |

## When to Use Fast-Quote

<CardGroup cols={2}>
  <Card title="Good For" icon="check">
    * Real-time price displays
    * Quick previews in UI
    * High-frequency quote refreshes
    * Time-sensitive applications
  </Card>

  <Card title="Consider Default For" icon="scale-balanced">
    * Large trade amounts
    * Final execution quotes
    * Price-sensitive users
    * Low-frequency requests
  </Card>
</CardGroup>

## Best Practice: Preview Then Execute

A common pattern is to use fast-quote for UI previews, then fetch a full quote before execution:

```typescript theme={null}
// Fast quote for immediate UI feedback
const previewQuote = await getQuote({
  ...params,
  data: { ...data, routeSelectionMode: "fast-quote" }
});

// Show preview to user
displayQuote(previewQuote);

// When user clicks "Swap", get optimized quote for execution
const executionQuote = await getQuote({
  ...params
  // No routeSelectionMode = exhaustive search
});

// Execute with best price
await executeQuote(executionQuote);
```

<Tip>
  Fast-quote mode typically reduces response times significantly, especially for cross-chain swaps where multiple bridge providers need to be queried.
</Tip>