diff --git a/lib/node_modules/@stdlib/stats/base/dists/beta/cdf/README.md b/lib/node_modules/@stdlib/stats/base/dists/beta/cdf/README.md
index 22862e4fb83d..cc9fb043bbb3 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/beta/cdf/README.md
+++ b/lib/node_modules/@stdlib/stats/base/dists/beta/cdf/README.md
@@ -2,7 +2,7 @@
@license Apache-2.0
-Copyright (c) 2018 The Stdlib Authors.
+Copyright (c) 2026 The Stdlib Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -160,6 +160,113 @@ logEachMap( 'x: %0.4f, α: %0.4f, β: %0.4f, F(x;α,β): %0.4f', x, alpha, beta,
+
+
+* * *
+
+
+
+## C APIs
+
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+
+### Usage
+
+```c
+#include "stdlib/stats/base/dists/beta/cdf.h"
+```
+
+#### stdlib_base_dists_beta_cdf( x, alpha, beta )
+
+Returns the [differential cdf][cdf] of a [beta][beta-distribution] distribution with parameters `alpha` (first shape parameter) and `beta` (second shape parameter).
+
+```c
+double y = stdlib_base_dists_beta_cdf( 0.5, 1.0, 1.0 );
+// returns 0.5
+```
+
+The function accepts the following arguments:
+
+- **x**: `[in] double` input value.
+- **alpha**: `[in] double` first shape parameter.
+- **beta**: `[in] double` second shape parameter.
+
+```c
+double stdlib_base_dists_beta_cdf( const double x, const double alpha, const double beta );
+```
+
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+
+### Examples
+
+```c
+#include "stdlib/stats/base/dists/beta/cdf.h"
+#include "stdlib/constants/float64/eps.h"
+#include
+#include
+
+static double random_uniform( const double min, const double max ) {
+ double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+ return min + ( v*(max-min) );
+}
+
+int main( void ) {
+ double alpha;
+ double beta;
+ double x;
+ double y;
+ int i;
+
+ for ( i = 0; i < 10; i++ ) {
+ alpha = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
+ beta = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
+ x = random_uniform( 0.0, 1.0 );
+ y = stdlib_base_dists_beta_cdf( x, alpha, beta );
+ printf( "x: %lf, α: %lf, β: %lf, F(x;α,β): %lf\n", x, alpha, beta, y );
+ }
+}
+```
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