---
title: "Fibonacci retracement/extension levels"
method: GET
path: "/api/tools/fibonacci"
---

# Fibonacci retracement/extension levels

`GET /api/tools/fibonacci`

## Request

- Base URL: `https://economicium.com`
- URL: `https://economicium.com/api/tools/fibonacci`
- Auth: none declared

Retracement (0-100%) and extension (127.2-261.8%) price levels for a swing high/low.

## Query parameters

- `high` number, required
- `low` number, required
- `direction` 'up' | 'down', required

## Response `200`

Computed result.

- object

## Other responses

- `400`: Invalid or missing parameters.

---

[API](https://skmtc.dev/economicium/apis/economicium-calculators.md) · [All operations](https://skmtc.dev/economicium/apis/economicium-calculators/llms.txt) · [OpenAPI document](https://skmtc.dev/economicium/apis/economicium-calculators/revisions/889dbc3b2448?raw)