diff --git a/bindings/node/src/lib.rs b/bindings/node/src/lib.rs
index c3bc26cf..0dec6f46 100644
--- a/bindings/node/src/lib.rs
+++ b/bindings/node/src/lib.rs
@@ -305,6 +305,11 @@ impl StochNode {
         low: Vec<f64>,
         close: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close must be equal length".to_string(),
+            ));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 2];
         for i in 0..n {
@@ -411,6 +416,11 @@ impl AdxNode {
         low: Vec<f64>,
         close: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close must be equal length".to_string(),
+            ));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -451,6 +461,11 @@ impl CciNode {
         low: Vec<f64>,
         close: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close must be equal length".to_string(),
+            ));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             out.push(
@@ -486,6 +501,11 @@ impl WilliamsRNode {
         low: Vec<f64>,
         close: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close must be equal length".to_string(),
+            ));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             out.push(
@@ -528,6 +548,11 @@ impl MfiNode {
         close: Vec<f64>,
         volume: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() || close.len() != volume.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close, volume must be equal length".to_string(),
+            ));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             out.push(
@@ -563,6 +588,11 @@ impl PsarNode {
         low: Vec<f64>,
         close: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close must be equal length".to_string(),
+            ));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             out.push(
@@ -617,6 +647,11 @@ impl KeltnerNode {
         low: Vec<f64>,
         close: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close must be equal length".to_string(),
+            ));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -661,6 +696,11 @@ impl DonchianNode {
     }
     #[napi]
     pub fn batch(&mut self, high: Vec<f64>, low: Vec<f64>) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() {
+            return Err(NapiError::from_reason(
+                "high and low must be equal length".to_string(),
+            ));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -709,6 +749,11 @@ impl VwapNode {
         close: Vec<f64>,
         volume: Vec<f64>,
     ) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() || low.len() != close.len() || close.len() != volume.len() {
+            return Err(NapiError::from_reason(
+                "high, low, close, volume must be equal length".to_string(),
+            ));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             out.push(
@@ -739,6 +784,11 @@ impl AoNode {
     }
     #[napi]
     pub fn batch(&mut self, high: Vec<f64>, low: Vec<f64>) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() {
+            return Err(NapiError::from_reason(
+                "high and low must be equal length".to_string(),
+            ));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             out.push(
@@ -778,6 +828,11 @@ impl AroonNode {
     }
     #[napi]
     pub fn batch(&mut self, high: Vec<f64>, low: Vec<f64>) -> napi::Result<Vec<f64>> {
+        if high.len() != low.len() {
+            return Err(NapiError::from_reason(
+                "high and low must be equal length".to_string(),
+            ));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 2];
         for i in 0..n {
diff --git a/bindings/python/src/lib.rs b/bindings/python/src/lib.rs
index 2f589999..8bf108f4 100644
--- a/bindings/python/src/lib.rs
+++ b/bindings/python/src/lib.rs
@@ -901,6 +901,11 @@ impl PyWilliamsR {
         let h = high.as_slice().expect("contiguous");
         let l = low.as_slice().expect("contiguous");
         let c = close.as_slice().expect("contiguous");
+        if h.len() != l.len() || l.len() != c.len() {
+            return Err(PyValueError::new_err(
+                "high, low, close must be equal length",
+            ));
+        }
         let mut out = Vec::with_capacity(h.len());
         for i in 0..h.len() {
             let candle = wc::Candle::new(c[i], h[i], l[i], c[i], 0.0, 0).map_err(map_err)?;
@@ -952,6 +957,11 @@ impl PyAdx {
         let h = high.as_slice().expect("contiguous");
         let l = low.as_slice().expect("contiguous");
         let c = close.as_slice().expect("contiguous");
+        if h.len() != l.len() || l.len() != c.len() {
+            return Err(PyValueError::new_err(
+                "high, low, close must be equal length",
+            ));
+        }
         let n = h.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -1010,6 +1020,11 @@ impl PyMfi {
         let l = low.as_slice().expect("contiguous");
         let c = close.as_slice().expect("contiguous");
         let v = volume.as_slice().expect("contiguous");
+        if h.len() != l.len() || l.len() != c.len() || c.len() != v.len() {
+            return Err(PyValueError::new_err(
+                "high, low, close, volume must be equal length",
+            ));
+        }
         let mut out = Vec::with_capacity(h.len());
         for i in 0..h.len() {
             let candle = wc::Candle::new(c[i], h[i], l[i], c[i], v[i], 0).map_err(map_err)?;
@@ -1097,6 +1112,11 @@ impl PyPsar {
         let h = high.as_slice().expect("contiguous");
         let l = low.as_slice().expect("contiguous");
         let c = close.as_slice().expect("contiguous");
+        if h.len() != l.len() || l.len() != c.len() {
+            return Err(PyValueError::new_err(
+                "high, low, close must be equal length",
+            ));
+        }
         let mut out = Vec::with_capacity(h.len());
         for i in 0..h.len() {
             let candle = wc::Candle::new(c[i], h[i], l[i], c[i], 0.0, 0).map_err(map_err)?;
@@ -1148,6 +1168,11 @@ impl PyKeltner {
         let h = high.as_slice().expect("contiguous");
         let l = low.as_slice().expect("contiguous");
         let c = close.as_slice().expect("contiguous");
+        if h.len() != l.len() || l.len() != c.len() {
+            return Err(PyValueError::new_err(
+                "high, low, close must be equal length",
+            ));
+        }
         let n = h.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -1262,6 +1287,11 @@ impl PyVwap {
         let l = low.as_slice().expect("contiguous");
         let c = close.as_slice().expect("contiguous");
         let v = volume.as_slice().expect("contiguous");
+        if h.len() != l.len() || l.len() != c.len() || c.len() != v.len() {
+            return Err(PyValueError::new_err(
+                "high, low, close, volume must be equal length",
+            ));
+        }
         let mut out = Vec::with_capacity(h.len());
         for i in 0..h.len() {
             let candle = wc::Candle::new(c[i], h[i], l[i], c[i], v[i], 0).map_err(map_err)?;
@@ -1309,6 +1339,9 @@ impl PyAo {
     ) -> PyResult<Bound<'py, PyArray1<f64>>> {
         let h = high.as_slice().expect("contiguous");
         let l = low.as_slice().expect("contiguous");
+        if h.len() != l.len() {
+            return Err(PyValueError::new_err("high and low must be equal length"));
+        }
         let mut out = Vec::with_capacity(h.len());
         for i in 0..h.len() {
             let candle = wc::Candle::new(l[i], h[i], l[i], l[i], 0.0, 0).map_err(map_err)?;
@@ -1356,6 +1389,9 @@ impl PyAroon {
     ) -> PyResult<Bound<'py, PyArray2<f64>>> {
         let h = high.as_slice().expect("contiguous");
         let l = low.as_slice().expect("contiguous");
+        if h.len() != l.len() {
+            return Err(PyValueError::new_err("high and low must be equal length"));
+        }
         let n = h.len();
         let mut out = vec![f64::NAN; n * 2];
         for i in 0..n {
diff --git a/bindings/wasm/src/lib.rs b/bindings/wasm/src/lib.rs
index fcf7580d..c49087ff 100644
--- a/bindings/wasm/src/lib.rs
+++ b/bindings/wasm/src/lib.rs
@@ -342,6 +342,9 @@ impl WasmAdx {
         low: &[f64],
         close: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(JsError::new("high, low, close must be equal length"));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -375,6 +378,9 @@ impl WasmWilliamsR {
         low: &[f64],
         close: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(JsError::new("high, low, close must be equal length"));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             let c = make_candle(high[i], low[i], close[i], 0.0)?;
@@ -403,6 +409,9 @@ impl WasmCci {
         low: &[f64],
         close: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(JsError::new("high, low, close must be equal length"));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             let c = make_candle(high[i], low[i], close[i], 0.0)?;
@@ -432,6 +441,9 @@ impl WasmMfi {
         close: &[f64],
         volume: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() || close.len() != volume.len() {
+            return Err(JsError::new("high, low, close, volume must be equal length"));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             let c = make_candle(high[i], low[i], close[i], volume[i])?;
@@ -460,6 +472,9 @@ impl WasmPsar {
         low: &[f64],
         close: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(JsError::new("high, low, close must be equal length"));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             let c = make_candle(high[i], low[i], close[i], 0.0)?;
@@ -492,6 +507,9 @@ impl WasmKeltner {
         low: &[f64],
         close: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() {
+            return Err(JsError::new("high, low, close must be equal length"));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -520,6 +538,9 @@ impl WasmDonchian {
         })
     }
     pub fn batch(&mut self, high: &[f64], low: &[f64]) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() {
+            return Err(JsError::new("high and low must be equal length"));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 3];
         for i in 0..n {
@@ -560,6 +581,9 @@ impl WasmVwap {
         close: &[f64],
         volume: &[f64],
     ) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() || low.len() != close.len() || close.len() != volume.len() {
+            return Err(JsError::new("high, low, close, volume must be equal length"));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             let c = make_candle(high[i], low[i], close[i], volume[i])?;
@@ -583,6 +607,9 @@ impl WasmAo {
         })
     }
     pub fn batch(&mut self, high: &[f64], low: &[f64]) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() {
+            return Err(JsError::new("high and low must be equal length"));
+        }
         let mut out = Vec::with_capacity(high.len());
         for i in 0..high.len() {
             let c = make_candle(high[i], low[i], low[i], 0.0)?;
@@ -607,6 +634,9 @@ impl WasmAroon {
     }
     /// Returns `[up0, down0, up1, down1, ...]`, length `2n`.
     pub fn batch(&mut self, high: &[f64], low: &[f64]) -> Result<Float64Array, JsError> {
+        if high.len() != low.len() {
+            return Err(JsError::new("high and low must be equal length"));
+        }
         let n = high.len();
         let mut out = vec![f64::NAN; n * 2];
         for i in 0..n {