diff --git a/noir_stdlib/src/grumpkin_scalar.nr b/noir_stdlib/src/grumpkin_scalar.nr
new file mode 100644
index 00000000000..3a74e974322
--- /dev/null
+++ b/noir_stdlib/src/grumpkin_scalar.nr
@@ -0,0 +1,21 @@
+struct GrumpkinScalar {
+    low: Field,
+    high: Field,
+}
+
+impl GrumpkinScalar {
+    fn new(low: Field, high: Field) -> Self {
+        // TODO: check that the low and high value fit within the grumpkin modulus
+        GrumpkinScalar { low, high }
+    }
+}
+
+global GRUMPKIN_SCALAR_SERIALISED_LEN: Field = 2;
+
+fn deserialise_grumpkin_scalar(fields: [Field; GRUMPKIN_SCALAR_SERIALISED_LEN]) -> GrumpkinScalar {
+    GrumpkinScalar { low: fields[0], high: fields[1] }
+}
+
+fn serialise_grumpkin_scalar(scalar: GrumpkinScalar) -> [Field; GRUMPKIN_SCALAR_SERIALISED_LEN] {
+    [scalar.low, scalar.high]
+}
diff --git a/noir_stdlib/src/grumpkin_scalar_mul.nr b/noir_stdlib/src/grumpkin_scalar_mul.nr
new file mode 100644
index 00000000000..b7774f0086d
--- /dev/null
+++ b/noir_stdlib/src/grumpkin_scalar_mul.nr
@@ -0,0 +1,7 @@
+use crate::grumpkin_scalar::GrumpkinScalar;
+use crate::scalar_mul::fixed_base_embedded_curve;
+
+fn grumpkin_fixed_base(scalar: GrumpkinScalar) -> [Field; 2] {
+    // TODO: this should use both the low and high limbs to do the scalar multiplication
+    fixed_base_embedded_curve(scalar.low)
+}
diff --git a/noir_stdlib/src/lib.nr b/noir_stdlib/src/lib.nr
index f033334c140..224c3a03f21 100644
--- a/noir_stdlib/src/lib.nr
+++ b/noir_stdlib/src/lib.nr
@@ -6,6 +6,8 @@ mod schnorr;
 mod ecdsa_secp256k1;
 mod ecdsa_secp256r1;
 mod eddsa;
+mod grumpkin_scalar;
+mod grumpkin_scalar_mul;
 mod scalar_mul;
 mod sha256;
 mod sha512;