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

# Quotes

# Quotes

Partners must request an executable quote before creating a subscription or redemption request.

Quotes define:

* flow type
* asset pair
* executable pricing
* quote expiration
* expected settlement amounts

***

# Supported Flows

## Subscription

```text theme={null}
USDT → USTBL
```

***

## Redemption

```text theme={null}
USTBL → USDT
```

***

# Quote Request

Partners request quotes by providing:

* flow type
* asset pair
* amount
* settlement parameters

***

# Quote Response

A successful quote response includes:

* quote ID
* amount in
* amount out
* expiration timestamp
* supported settlement information

***

# Quote Expiration

Quotes are time-limited.

Expired quotes cannot be used to create requests.

Partners are responsible for creating requests before expiration.

***

# Executable Pricing

Quotes represent executable commercial terms at the moment of creation.

Once created, quote validity is governed exclusively by the quote expiration timestamp.

Underlying market changes do not modify an already issued quote.

***

# Quote Lifecycle

Quotes support the following lifecycle states.

## ACTIVE

The quote is valid and may be used to create requests.

***

## EXPIRED

The quote expiration timestamp has been reached.

Expired quotes cannot be used operationally.

***

## CONSUMED

The quote has already been used to create a request.

Consumed quotes cannot be reused.

***

# Precision Rules

| Asset | Precision        |
| ----- | ---------------- |
| USTBL | Up to 6 decimals |
| USDT  | Up to 2 decimals |

***

# Operational Rules

## Single Use

Quotes may only be consumed once.

***

## Asset Validation

Quotes are only available for supported:

* assets
* networks
* flow types

Unsupported combinations are rejected.

***

## Settlement Validation

Quotes may validate:

* payout address eligibility
* operational compatibility
* request constraints

Invalid settlement configurations may prevent quote creation.

***

# Error Scenarios

Quote creation may fail for reasons including:

* unsupported asset
* unsupported network
* invalid amount
* invalid address
* expired request parameters
* operational restrictions

***

# Future Scope

The following capabilities are currently out of scope for V1:

* streaming quotes
* RFQ negotiation
* partial quote consumption
* quote amendments
* indicative pricing
* webhook notifications