---
title: rvi (RVI)
description: "rvi API reference: parameters, response fields and example requests."
---

# `rvi` — RVI

> Category: **Oscillator** · Composite

::: tip Reading the response
Use `POST /api/indicators?explain=true` to include interpretation notes at `indicators[responseKey].explain`. Read numeric results from `columns` and `data` in the same object.
:::

This is a oscillator indicator.

## Parameters

| Parameter | Type | Default |
|------|------|--------|
| `length` | int | `10` |
| `ema_len` | int | `14` |

## Output columns

| Column |
|------|
| `rvi` |
| `rvi_ma` |



## Native features

This indicator has no independent native feature signals.

Describes directional volatility share and its average, not a native confirmed price-reversal event.

With `signals: true`, this indicator returns `signals: null`. Numeric values and charts remain available; no crossing, divergence or trade rules are added.

## Example call

```bash
curl -X POST -H "Authorization: Bearer mq_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "exchange": "binance",
    "market":   "perp",
    "symbol":   "BTCUSDT",
    "interval": "5m",
    "limit":    100,
    "calc":     [{"name": "rvi", "params": {"length": 10, "ema_len": 14}}]
  }' \
  https://api.mobiusquant.ai/api/indicators
```

## Full interpretation guide

Field meanings, interpretation rules and usage notes are
documented in Chinese at:

[rvi (中文详情)](https://docs.mobiusquant.ai/zh/indicators/rvi)

## Related indicators

[fisher_transform](./fisher_transform) · [rci_ribbon](./rci_ribbon) · [rsi](./rsi)