---
title: launchPreset
description: v1 linear-curve coefficients used when a market is created.
---

> **For AI agents:** the complete documentation index is at [llms.txt](/llms.txt). Append `.md` to any page URL for its markdown version.

Returns the frozen v1 `LinearCurveState`: floor `0.0001` USDC/AVM, main slope `10n ** 10` WAD, ramp scalar `2.5` WAD. Ramp end/width are `0` in v1 (the ramp region is degenerate until a floor raise introduces one).

This is the engine a new market starts with. It is not a quote.

## Import

```ts
import { launchPreset } from "@repo/contract-client/math";
```

## Usage

```ts
import { launchPreset, priceAtSupply } from "@repo/contract-client/math";
import { asAvmAtoms } from "@repo/contract-client/types";

const engine = launchPreset();
const start = priceAtSupply(engine, asAvmAtoms(0n));
```

## Return Value

`LinearCurveState`

| Field                               | v1 value                              |
| ----------------------------------- | ------------------------------------- |
| `schemaVersion`                     | `1`                                   |
| `floorPriceWad`                     | `100_000_000_000_000` (`0.0001` USDC) |
| `mainSlopeWad`                      | `10_000_000_000`                      |
| `rampScalarWad`                     | `2_500_000_000_000_000_000` (`2.5`)   |
| `rampEndSupplyWad` / `rampWidthWad` | `0`                                   |

## Parameters

None.

## Error

None.