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

# Quotes Overview

> Overview of OneBalance's quoting system: what quotes are, how they're generated, and how to use them in cross-chain operations.

OneBalance quotes enable cross-chain operations including asset transfers, swaps, and arbitrary contract interactions. They facilitate the core transaction lifecycle by providing cost estimates and execution plans.

<Warning>
  **Account Setup Required**: Quotes require proper account configuration. See [Account Models](/concepts/accounts) for setup instructions.
</Warning>

## Quote Types

### Unified Quotes

For transfers and swaps between aggregated or chain-specific assets.

```bash Terminal theme={null}
curl -X POST "https://be.onebalance.io/api/v1/quote" \
  -H "x-api-key: ONEBALANCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": {
      "account": {
        "sessionAddress": "0x1cBF...",
        "adminAddress": "0xc162...",
        "accountAddress": "0xE202..."
      },
      "asset": { "assetId": "ob:eth" },
      "amount": "1000000000000000000"
    },
    "to": {
      "asset": { "assetId": "ob:usdc" }
    }
  }'
```

### Contract Call Quotes

For arbitrary smart contract interactions with automatic token routing.

```bash Terminal theme={null}
curl -X POST "https://be.onebalance.io/api/quotes/prepare-call-quote" \
  -H "x-api-key: ONEBALANCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "account": {
      "sessionAddress": "0x1cBF...",
      "adminAddress": "0xc162...",
      "accountAddress": "0xE202..."
    },
    "targetChain": "eip155:8453",
    "calls": [{
      "to": "0x...",
      "data": "0x...",
      "value": "0x0"
    }],
    "tokensRequired": [{
      "assetType": "eip155:8453/erc20:0x...",
      "amount": "1000000"
    }]
  }'
```

## Quote Lifecycle

<Steps>
  <Step title="Request Quote">
    Generate a quote with pricing and execution plan
  </Step>

  <Step title="Sign Transaction">
    Sign the typed data using your wallet or signer
  </Step>

  <Step title="Execute Quote">
    Submit the signed quote for on-chain execution
  </Step>
</Steps>

## Key Features

* **Cross-chain routing** - Use tokens from any supported chain
* **Gas abstraction** - No need for native tokens on target chains
* **Automatic approvals** - ERC20 approvals handled automatically
* **Quote expiration** - Time-limited quotes ensure fresh pricing

<Tip>
  Start with [quote examples](/guides/quotes/examples) for hands-on implementation guidance.
</Tip>