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

# v0.1.6 — March 13, 2026

> Breaking changes to Place Order and Get Quote endpoints

## Breaking changes

### Place Order — `POST /v1/pm/events/{eventId}/markets/{marketId}/orders`

<Warning>
  This is a **breaking change**. All existing integrations must be updated.
</Warning>

#### Request body changes

| Change        | Before                                | After                                           |
| ------------- | ------------------------------------- | ----------------------------------------------- |
| Outcome field | `outcome` (`YES` / `NO`)              | `outcomeId` (UUID of the outcome)               |
| Order type    | Implicit (market order if no `price`) | `type` field **required** (`LIMIT` or `MARKET`) |

#### New optional fields (CLOB markets)

| Field         | Type      | Description                                                                                 |
| ------------- | --------- | ------------------------------------------------------------------------------------------- |
| `timeInForce` | `string`  | `GTC`, `GTD`, `FAK`, or `FOK`. Defaults to `GTC` for limit orders, `FAK` for market orders. |
| `postOnly`    | `boolean` | If `true`, the order is rejected instead of crossing the spread. Limit orders only.         |
| `maxSlippage` | `number`  | Maximum acceptable slippage for market orders (0.00–1.00).                                  |
| `expiresAt`   | `string`  | ISO 8601 expiration timestamp. Required for `GTD` orders.                                   |

#### Migration guide

**Before:**

```json theme={null}
{
  "side": "BUY",
  "outcome": "YES",
  "amount": 100,
  "currency": "USD",
  "price": 0.70
}
```

**After:**

```json theme={null}
{
  "side": "BUY",
  "outcomeId": "c3d4e5f6-a7b8-9012-cdef-345678901234",
  "amount": 100,
  "type": "LIMIT",
  "currency": "USD",
  "price": 0.70,
  "timeInForce": "GTC"
}
```

To get the `outcomeId`, use the [Get Event](/api-reference/pm/get-event) endpoint — each outcome in a market has an `id` field.

***

### Get Quote — `POST /v1/pm/events/{eventId}/markets/{marketId}/quote`

#### Request body changes

| Change        | Before                   | After                             |
| ------------- | ------------------------ | --------------------------------- |
| Outcome field | `outcome` (`YES` / `NO`) | `outcomeId` (UUID of the outcome) |

#### Migration guide

**Before:**

```json theme={null}
{
  "side": "BUY",
  "outcome": "YES",
  "amount": 100,
  "currency": "USD"
}
```

**After:**

```json theme={null}
{
  "side": "BUY",
  "outcomeId": "c3d4e5f6-a7b8-9012-cdef-345678901234",
  "amount": 100,
  "currency": "USD"
}
```

***

### Response format changes

The Place Order response now uses a unified `order` key instead of separate `ammOrder` / `clobOrder` keys:

**Before:**

```json theme={null}
{
  "engine": "CLOB",
  "clobOrder": { ... }
}
```

**After:**

```json theme={null}
{
  "engine": "CLOB",
  "order": { ... }
}
```

The `engine` field (`AMM` or `CLOB`) remains unchanged.