---
title: "RSI (Relative Strength Index)"
method: GET
path: "/api/v1/coins/{slug}/indicators/rsi"
tags: ["Indicators"]
---

# RSI (Relative Strength Index)

`GET /api/v1/coins/{slug}/indicators/rsi`

Daily Relative Strength Index — a momentum oscillator bounded 0–100 that
measures the speed and magnitude of recent price moves. Above 70 is
conventionally overbought, below 30 oversold. Windows: 7, 14, 21, 28 days
(default 14) — the 21- and 28-day windows require the Starter plan or higher.
Young coins return leading warm-up `null`s.

## Query parameters

- `period` integer — Window length — one of 7, 14, 21, 28 (default 14).
- `start` string — ISO date lower bound.
- `end` string — ISO date upper bound.
- `limit` integer — Max rows (1–1000, default 365).

## Response `200`

- object
  - `data` object[]
    - `date` string
    - `value` integer
  - `meta` object
    - `coin` string
    - `indicator` string
    - `period` integer
    - `count` integer

## Other responses

- `403`

---

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