diff --git a/packages/squiggle-lang/__tests__/GenericDist/GenericOperation__Test.res b/packages/squiggle-lang/__tests__/GenericDist/GenericOperation__Test.res
index be01c87f..67659a41 100644
--- a/packages/squiggle-lang/__tests__/GenericDist/GenericOperation__Test.res
+++ b/packages/squiggle-lang/__tests__/GenericDist/GenericOperation__Test.res
@@ -59,7 +59,7 @@ describe("sparkline", () => {
     expected: DistributionOperation.outputType,
   ) => {
     test(name, () => {
-      let result = DistributionOperation.run(~env, FromDist(ToSparkline(20), dist))
+      let result = DistributionOperation.run(~env, FromDist(ToString(ToSparkline(20)), dist))
       expect(result)->toEqual(expected)
     })
   }
diff --git a/packages/squiggle-lang/__tests__/ReducerInterface/ReducerInterface_Distribution_test.res b/packages/squiggle-lang/__tests__/ReducerInterface/ReducerInterface_Distribution_test.res
index 85d80919..096ac360 100644
--- a/packages/squiggle-lang/__tests__/ReducerInterface/ReducerInterface_Distribution_test.res
+++ b/packages/squiggle-lang/__tests__/ReducerInterface/ReducerInterface_Distribution_test.res
@@ -30,6 +30,9 @@ describe("eval on distribution functions", () => {
     testEval("mean(normal(5,2))", "Ok(5)")
     testEval("mean(lognormal(1,2))", "Ok(20.085536923187668)")
   })
+  describe("toString", () => {
+    testEval("toString(normal(5,2))", "Ok('Normal(5,2)')")
+  })
   describe("normalize", () => {
     testEval("normalize(normal(5,2))", "Ok(Normal(5,2))")
   })
diff --git a/packages/squiggle-lang/src/rescript/Distributions/DistributionOperation/DistributionOperation.res b/packages/squiggle-lang/src/rescript/Distributions/DistributionOperation/DistributionOperation.res
index 4b111c97..faf39e27 100644
--- a/packages/squiggle-lang/src/rescript/Distributions/DistributionOperation/DistributionOperation.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/DistributionOperation/DistributionOperation.res
@@ -113,8 +113,8 @@ let rec run = (~env, functionCallInfo: functionCallInfo): outputType => {
       GenericDist.toFloatOperation(dist, ~toPointSetFn, ~distToFloatOperation)
       ->E.R2.fmap(r => Float(r))
       ->OutputLocal.fromResult
-    | ToString => dist->GenericDist.toString->String
-    | ToSparkline(buckets) =>
+    | ToString(ToString) => dist->GenericDist.toString->String
+    | ToString(ToSparkline(buckets)) =>
       GenericDist.toSparkline(dist, ~sampleCount, ~buckets, ())
       ->E.R2.fmap(r => String(r))
       ->OutputLocal.fromResult
diff --git a/packages/squiggle-lang/src/rescript/Distributions/GenericDist/GenericDist_Types.res b/packages/squiggle-lang/src/rescript/Distributions/GenericDist/GenericDist_Types.res
index ec8374b2..cc9f94c9 100644
--- a/packages/squiggle-lang/src/rescript/Distributions/GenericDist/GenericDist_Types.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/GenericDist/GenericDist_Types.res
@@ -52,12 +52,15 @@ module Operation = {
 
   type toFloatArray = Sample(int)
 
+  type toString = 
+  | ToString
+  | ToSparkline(int)
+
   type fromDist =
     | ToFloat(toFloat)
     | ToDist(toDist)
     | ToDistCombination(direction, arithmeticOperation, [#Dist(genericDist) | #Float(float)])
-    | ToString
-    | ToSparkline(int)
+    | ToString(toString)
 
   type singleParamaterFunction =
     | FromDist(fromDist)
@@ -80,8 +83,8 @@ module Operation = {
     | ToDist(ToSampleSet(r)) => `toSampleSet(${E.I.toString(r)})`
     | ToDist(Truncate(_, _)) => `truncate`
     | ToDist(Inspect) => `inspect`
-    | ToString => `toString`
-    | ToSparkline(n) => `toSparkline(${E.I.toString(n)})`
+    | ToString(ToString) => `toString`
+    | ToString(ToSparkline(n)) => `toSparkline(${E.I.toString(n)})`
     | ToDistCombination(Algebraic, _, _) => `algebraic`
     | ToDistCombination(Pointwise, _, _) => `pointwise`
     }
diff --git a/packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_GenericDistribution.res b/packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_GenericDistribution.res
index 84e0697f..89be2d46 100644
--- a/packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_GenericDistribution.res
+++ b/packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_GenericDistribution.res
@@ -45,6 +45,13 @@ module Helpers = {
     FromDist(GenericDist_Types.Operation.ToFloat(fnCall), dist)->runGenericOperation->Some
   }
 
+  let toStringFn = (
+    fnCall: GenericDist_Types.Operation.toString,
+    dist: GenericDist_Types.genericDist,
+  ) => {
+    FromDist(GenericDist_Types.Operation.ToString(fnCall), dist)->runGenericOperation->Some
+  }
+
   let toDistFn = (fnCall: GenericDist_Types.Operation.toDist, dist) => {
     FromDist(GenericDist_Types.Operation.ToDist(fnCall), dist)->runGenericOperation->Some
   }
@@ -119,6 +126,9 @@ let dispatchToGenericOutput = (call: ExpressionValue.functionCall): option<
     ->SymbolicConstructors.symbolicResultToOutput
   | ("sample", [EvDistribution(dist)]) => Helpers.toFloatFn(#Sample, dist)
   | ("mean", [EvDistribution(dist)]) => Helpers.toFloatFn(#Mean, dist)
+  | ("toString", [EvDistribution(dist)]) => Helpers.toStringFn(ToString, dist)
+  | ("toSparkline", [EvDistribution(dist)]) => Helpers.toStringFn(ToSparkline(20), dist)
+  | ("toSparkline", [EvDistribution(dist), EvNumber(n)]) => Helpers.toStringFn(ToSparkline(Belt.Float.toInt(n)), dist)
   | ("exp", [EvDistribution(a)]) =>
     // https://mathjs.org/docs/reference/functions/exp.html
     Helpers.twoDiststoDistFn(Algebraic, "pow", GenericDist.fromFloat(Math.e), a)->Some