---
title: "Taille de position pour un risque fixé (stop donné ou par l'ATR)"
method: POST
path: "/v1/calc/position-size"
tags: ["Calculs sur vos données"]
---

# Taille de position pour un risque fixé (stop donné ou par l'ATR)

`POST /v1/calc/position-size`

## Request

- Base URL: `https://304notfound.com` (the document declares no server; this is the origin it was published from)
- URL: `https://304notfound.com/v1/calc/position-size`
- Auth: none declared

## Headers

- `x-client` string

## Request body

- PositionIn
  - `equity` number, required: Capital total du compte.
  - `cash` number, nullable: Liquidités disponibles (par défaut : le capital).
  - `direction` 'LONG' | 'SHORT', required
  - `entry_price` number, required
  - `stop_distance` number, nullable: Distance du stop en prix ; sinon calculée par l'ATR des bougies.
  - `candles` CandleIn[], nullable
    - `time` integer, required: Horodatage Unix (secondes) de l'ouverture de la bougie.
    - `open` number, required
    - `high` number, required
    - `low` number, required
    - `close` number, required
    - `volume` number
  - `atr_period` integer
  - `atr_multiplier` number
  - `risk_pct` number: Part du capital risquée si le stop est touché.
  - `take_profit_r` number
  - `max_notional_pct` number
  - `commission_bps` number
  - `spread_bps` number
  - `slippage_bps` number

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/304notfound/apis/304notmodified.md) · [All operations](https://skmtc.dev/304notfound/apis/304notmodified/llms.txt) · [OpenAPI document](https://skmtc.dev/304notfound/apis/304notmodified/revisions/fd932a419a53?raw)