diff --git a/src/lang/wasm.ts b/src/lang/wasm.ts
index d8ff96591..ba9241c86 100644
--- a/src/lang/wasm.ts
+++ b/src/lang/wasm.ts
@@ -18,6 +18,7 @@ import {
   default_project_settings,
   base64_decode,
   clear_scene_and_bust_cache,
+  change_kcl_settings,
   reloadModule,
 } from 'lib/wasm_lib_wrapper'
 
@@ -56,6 +57,7 @@ import { ArtifactGraph as RustArtifactGraph } from 'wasm-lib/kcl/bindings/Artifa
 import { Artifact } from './std/artifactGraph'
 import { getNodePathFromSourceRange } from 'lang/queryAstNodePathUtils'
 import { NumericSuffix } from 'wasm-lib/kcl/bindings/NumericSuffix'
+import { MetaSettings } from 'wasm-lib/kcl/bindings/MetaSettings'
 
 export type { Artifact } from 'wasm-lib/kcl/bindings/Artifact'
 export type { ArtifactCommand } from 'wasm-lib/kcl/bindings/Artifact'
@@ -844,3 +846,17 @@ export function base64Decode(base64: string): ArrayBuffer | Error {
     return new Error('Caught error decoding base64 string: ' + e)
   }
 }
+
+/// Change the meta settings for the kcl file.
+/// Returns the new kcl string with the updated settings.
+export function changeKclSettings(
+  kcl: string,
+  settings: MetaSettings
+): string | Error {
+  try {
+    return change_kcl_settings(kcl, JSON.stringify(settings))
+  } catch (e) {
+    console.error('Caught error changing kcl settings: ' + e)
+    return new Error('Caught error changing kcl settings: ' + e)
+  }
+}
diff --git a/src/lib/wasm_lib_wrapper.ts b/src/lib/wasm_lib_wrapper.ts
index e55a78d58..93d670e7f 100644
--- a/src/lib/wasm_lib_wrapper.ts
+++ b/src/lib/wasm_lib_wrapper.ts
@@ -26,6 +26,7 @@ import {
   default_project_settings as DefaultProjectSettings,
   base64_decode as Base64Decode,
   clear_scene_and_bust_cache as ClearSceneAndBustCache,
+  change_kcl_settings as ChangeKclSettings,
 } from '../wasm-lib/pkg/wasm_lib'
 
 type ModuleType = typeof import('../wasm-lib/pkg/wasm_lib')
@@ -110,3 +111,6 @@ export const clear_scene_and_bust_cache: typeof ClearSceneAndBustCache = (
 ) => {
   return getModule().clear_scene_and_bust_cache(...args)
 }
+export const change_kcl_settings: typeof ChangeKclSettings = (...args) => {
+  return getModule().change_kcl_settings(...args)
+}
diff --git a/src/wasm-lib/Cargo.lock b/src/wasm-lib/Cargo.lock
index 0baa2689b..4f43d2d06 100644
--- a/src/wasm-lib/Cargo.lock
+++ b/src/wasm-lib/Cargo.lock
@@ -1710,7 +1710,7 @@ dependencies = [
 
 [[package]]
 name = "kcl-lib"
-version = "0.2.32"
+version = "0.2.33"
 dependencies = [
  "anyhow",
  "approx 0.5.1",
diff --git a/src/wasm-lib/kcl/Cargo.toml b/src/wasm-lib/kcl/Cargo.toml
index 8de7c1bb9..76983d4d4 100644
--- a/src/wasm-lib/kcl/Cargo.toml
+++ b/src/wasm-lib/kcl/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "kcl-lib"
 description = "KittyCAD Language implementation and tools"
-version = "0.2.32"
+version = "0.2.33"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/KittyCAD/modeling-app"
diff --git a/src/wasm-lib/kcl/src/docs/mod.rs b/src/wasm-lib/kcl/src/docs/mod.rs
index 35513bfc3..c6ec18344 100644
--- a/src/wasm-lib/kcl/src/docs/mod.rs
+++ b/src/wasm-lib/kcl/src/docs/mod.rs
@@ -13,9 +13,7 @@ use tower_lsp::lsp_types::{
     MarkupKind, ParameterInformation, ParameterLabel, SignatureHelp, SignatureInformation,
 };
 
-use crate::execution::Sketch;
-
-use crate::std::Primitive;
+use crate::{execution::Sketch, std::Primitive};
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, JsonSchema, ts_rs::TS)]
 #[ts(export)]
diff --git a/src/wasm-lib/kcl/src/execution/annotations.rs b/src/wasm-lib/kcl/src/execution/annotations.rs
index c8d9b75d7..969c52fbe 100644
--- a/src/wasm-lib/kcl/src/execution/annotations.rs
+++ b/src/wasm-lib/kcl/src/execution/annotations.rs
@@ -7,9 +7,9 @@ use crate::{
     KclError, SourceRange,
 };
 
-pub(super) const SETTINGS: &str = "settings";
-pub(super) const SETTINGS_UNIT_LENGTH: &str = "defaultLengthUnit";
-pub(super) const SETTINGS_UNIT_ANGLE: &str = "defaultAngleUnit";
+pub(crate) const SETTINGS: &str = "settings";
+pub(crate) const SETTINGS_UNIT_LENGTH: &str = "defaultLengthUnit";
+pub(crate) const SETTINGS_UNIT_ANGLE: &str = "defaultAngleUnit";
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 pub(super) enum AnnotationScope {
diff --git a/src/wasm-lib/kcl/src/execution/exec_ast.rs b/src/wasm-lib/kcl/src/execution/exec_ast.rs
index 6b39d2be8..ff72cd880 100644
--- a/src/wasm-lib/kcl/src/execution/exec_ast.rs
+++ b/src/wasm-lib/kcl/src/execution/exec_ast.rs
@@ -2,6 +2,7 @@ use std::collections::HashMap;
 
 use async_recursion::async_recursion;
 
+use super::cad_op::{OpArg, Operation};
 use crate::{
     errors::{KclError, KclErrorDetails},
     execution::{
@@ -19,8 +20,6 @@ use crate::{
     },
 };
 
-use super::cad_op::{OpArg, Operation};
-
 impl BinaryPart {
     #[async_recursion]
     pub async fn get_result(&self, exec_state: &mut ExecState, ctx: &ExecutorContext) -> Result<KclValue, KclError> {
diff --git a/src/wasm-lib/kcl/src/execution/import.rs b/src/wasm-lib/kcl/src/execution/import.rs
index 62d69397d..729f7365d 100644
--- a/src/wasm-lib/kcl/src/execution/import.rs
+++ b/src/wasm-lib/kcl/src/execution/import.rs
@@ -15,6 +15,7 @@ use kittycad_modeling_cmds as kcmc;
 use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
+use super::ExecutorContext;
 use crate::{
     errors::{KclError, KclErrorDetails},
     execution::{ExecState, ImportedGeometry},
@@ -22,8 +23,6 @@ use crate::{
     source_range::SourceRange,
 };
 
-use super::ExecutorContext;
-
 // Zoo co-ordinate system.
 //
 // * Forward: -Y
diff --git a/src/wasm-lib/kcl/src/execution/kcl_value.rs b/src/wasm-lib/kcl/src/execution/kcl_value.rs
index 39caf9ebd..e4f2b9fba 100644
--- a/src/wasm-lib/kcl/src/execution/kcl_value.rs
+++ b/src/wasm-lib/kcl/src/execution/kcl_value.rs
@@ -581,10 +581,11 @@ impl KclValue {
 }
 
 // TODO called UnitLen so as not to clash with UnitLength in settings)
-#[derive(Debug, Clone, Copy, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema, Eq)]
+#[derive(Debug, Default, Clone, Copy, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema, Eq)]
 #[ts(export)]
 #[serde(tag = "type")]
 pub enum UnitLen {
+    #[default]
     Mm,
     Cm,
     M,
@@ -593,6 +594,19 @@ pub enum UnitLen {
     Yards,
 }
 
+impl std::fmt::Display for UnitLen {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            UnitLen::Mm => write!(f, "mm"),
+            UnitLen::Cm => write!(f, "cm"),
+            UnitLen::M => write!(f, "m"),
+            UnitLen::Inches => write!(f, "in"),
+            UnitLen::Feet => write!(f, "ft"),
+            UnitLen::Yards => write!(f, "yd"),
+        }
+    }
+}
+
 impl TryFrom<NumericSuffix> for UnitLen {
     type Error = ();
 
@@ -644,6 +658,15 @@ pub enum UnitAngle {
     Radians,
 }
 
+impl std::fmt::Display for UnitAngle {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            UnitAngle::Degrees => write!(f, "deg"),
+            UnitAngle::Radians => write!(f, "rad"),
+        }
+    }
+}
+
 impl TryFrom<NumericSuffix> for UnitAngle {
     type Error = ();
 
diff --git a/src/wasm-lib/kcl/src/execution/mod.rs b/src/wasm-lib/kcl/src/execution/mod.rs
index b6352fdda..1137c5765 100644
--- a/src/wasm-lib/kcl/src/execution/mod.rs
+++ b/src/wasm-lib/kcl/src/execution/mod.rs
@@ -13,8 +13,7 @@ use kcmc::{
     websocket::{ModelingSessionData, OkWebSocketResponseData},
     ImageFormat, ModelingCmd,
 };
-use kittycad_modeling_cmds::length_unit::LengthUnit;
-use kittycad_modeling_cmds::{self as kcmc, websocket::WebSocketResponse};
+use kittycad_modeling_cmds::{self as kcmc, length_unit::LengthUnit, websocket::WebSocketResponse};
 use parse_display::{Display, FromStr};
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -27,14 +26,18 @@ pub(crate) use import::{import_foreign, send_to_engine as send_import_to_engine,
 pub use kcl_value::{KclObjectFields, KclValue, UnitAngle, UnitLen};
 use uuid::Uuid;
 
-mod annotations;
+pub(crate) mod annotations;
 mod artifact;
 pub(crate) mod cache;
 mod cad_op;
 mod exec_ast;
 mod function_param;
 mod import;
-mod kcl_value;
+pub(crate) mod kcl_value;
+
+// Re-exports.
+pub use artifact::{Artifact, ArtifactCommand, ArtifactGraph, ArtifactId};
+pub use cad_op::Operation;
 
 use crate::{
     engine::{EngineManager, ExecutionKind},
@@ -52,10 +55,6 @@ use crate::{
     ExecError, KclErrorWithOutputs, Program,
 };
 
-// Re-exports.
-pub use artifact::{Artifact, ArtifactCommand, ArtifactGraph, ArtifactId};
-pub use cad_op::Operation;
-
 /// State for executing a program.
 #[derive(Debug, Clone, Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
@@ -247,7 +246,7 @@ impl ModuleState {
     }
 }
 
-#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
+#[derive(Debug, Default, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
 #[ts(export)]
 #[serde(rename_all = "camelCase")]
 pub struct MetaSettings {
@@ -256,7 +255,11 @@ pub struct MetaSettings {
 }
 
 impl MetaSettings {
-    fn update_from_annotation(&mut self, annotation: &NonCodeValue, source_range: SourceRange) -> Result<(), KclError> {
+    pub fn update_from_annotation(
+        &mut self,
+        annotation: &NonCodeValue,
+        source_range: SourceRange,
+    ) -> Result<(), KclError> {
         let properties = annotations::expect_properties(annotations::SETTINGS, annotation, source_range)?;
 
         for p in properties {
diff --git a/src/wasm-lib/kcl/src/lib.rs b/src/wasm-lib/kcl/src/lib.rs
index 83bf4fd21..7e83c9777 100644
--- a/src/wasm-lib/kcl/src/lib.rs
+++ b/src/wasm-lib/kcl/src/lib.rs
@@ -84,7 +84,7 @@ pub use engine::{EngineManager, ExecutionKind};
 pub use errors::{CompilationError, ConnectionError, ExecError, KclError, KclErrorWithOutputs};
 pub use execution::{
     cache::{CacheInformation, OldAstState},
-    ExecState, ExecutorContext, ExecutorSettings, Point2d,
+    ExecState, ExecutorContext, ExecutorSettings, MetaSettings, Point2d,
 };
 pub use lsp::{
     copilot::Backend as CopilotLspBackend,
@@ -121,8 +121,7 @@ pub mod std_utils {
 }
 
 pub mod pretty {
-    pub use crate::parsing::token::NumericSuffix;
-    pub use crate::unparser::format_number;
+    pub use crate::{parsing::token::NumericSuffix, unparser::format_number};
 }
 
 use serde::{Deserialize, Serialize};
@@ -162,6 +161,18 @@ impl Program {
         self.ast.compute_digest()
     }
 
+    /// Get the meta settings for the kcl file from the annotations.
+    pub fn get_meta_settings(&self) -> Result<Option<crate::MetaSettings>, KclError> {
+        self.ast.get_meta_settings()
+    }
+
+    /// Change the meta settings for the kcl file.
+    pub fn change_meta_settings(&mut self, settings: crate::MetaSettings) -> Result<Self, KclError> {
+        Ok(Self {
+            ast: self.ast.change_meta_settings(settings)?,
+        })
+    }
+
     pub fn lint_all(&self) -> Result<Vec<lint::Discovered>, anyhow::Error> {
         self.ast.lint_all()
     }
diff --git a/src/wasm-lib/kcl/src/parsing/ast/modify.rs b/src/wasm-lib/kcl/src/parsing/ast/modify.rs
index 83f752659..aef9c0cbc 100644
--- a/src/wasm-lib/kcl/src/parsing/ast/modify.rs
+++ b/src/wasm-lib/kcl/src/parsing/ast/modify.rs
@@ -6,6 +6,7 @@ use kcmc::{
 };
 use kittycad_modeling_cmds as kcmc;
 
+use super::types::LiteralValue;
 use crate::{
     engine::EngineManager,
     errors::{KclError, KclErrorDetails},
@@ -18,8 +19,6 @@ use crate::{
     Program,
 };
 
-use super::types::LiteralValue;
-
 type Point3d = kcmc::shared::Point3d<f64>;
 
 #[derive(Debug)]
diff --git a/src/wasm-lib/kcl/src/parsing/ast/types/mod.rs b/src/wasm-lib/kcl/src/parsing/ast/types/mod.rs
index e5bd13b80..f9fedcb5d 100644
--- a/src/wasm-lib/kcl/src/parsing/ast/types/mod.rs
+++ b/src/wasm-lib/kcl/src/parsing/ast/types/mod.rs
@@ -17,7 +17,6 @@ use tower_lsp::lsp_types::{
     CompletionItem, CompletionItemKind, DocumentSymbol, FoldingRange, FoldingRangeKind, Range as LspRange, SymbolKind,
 };
 
-use super::digest::Digest;
 pub use crate::parsing::ast::types::{
     condition::{ElseIf, IfExpression},
     literal_value::LiteralValue,
@@ -26,7 +25,8 @@ pub use crate::parsing::ast::types::{
 use crate::{
     docs::StdLibFn,
     errors::KclError,
-    execution::{KclValue, Metadata, TagIdentifier},
+    execution::{annotations, KclValue, Metadata, TagIdentifier},
+    parsing::ast::digest::Digest,
     parsing::PIPE_OPERATOR,
     source_range::{ModuleId, SourceRange},
 };
@@ -254,6 +254,52 @@ impl Node<Program> {
         }
         Ok(findings)
     }
+
+    /// Get the annotations for the meta settings from the kcl file.
+    pub fn get_meta_settings(&self) -> Result<Option<crate::execution::MetaSettings>, KclError> {
+        let annotations = self
+            .non_code_meta
+            .start_nodes
+            .iter()
+            .filter_map(|n| n.annotation().map(|result| (result, n.as_source_range())));
+        for (annotation, source_range) in annotations {
+            if annotation.annotation_name() == Some(annotations::SETTINGS) {
+                let mut meta_settings = crate::execution::MetaSettings::default();
+                meta_settings.update_from_annotation(annotation, source_range)?;
+                return Ok(Some(meta_settings));
+            }
+        }
+
+        Ok(None)
+    }
+
+    pub fn change_meta_settings(&mut self, settings: crate::execution::MetaSettings) -> Result<Self, KclError> {
+        let mut new_program = self.clone();
+        let mut found = false;
+        for node in &mut new_program.non_code_meta.start_nodes {
+            if let Some(annotation) = node.annotation() {
+                if annotation.annotation_name() == Some(annotations::SETTINGS) {
+                    let annotation = NonCodeValue::new_from_meta_settings(&settings);
+                    *node = Node::no_src(NonCodeNode {
+                        value: annotation,
+                        digest: None,
+                    });
+                    found = true;
+                    break;
+                }
+            }
+        }
+
+        if !found {
+            let annotation = NonCodeValue::new_from_meta_settings(&settings);
+            new_program.non_code_meta.start_nodes.push(Node::no_src(NonCodeNode {
+                value: annotation,
+                digest: None,
+            }));
+        }
+
+        Ok(new_program)
+    }
 }
 
 impl Program {
@@ -1078,6 +1124,24 @@ impl NonCodeValue {
             _ => None,
         }
     }
+
+    pub fn new_from_meta_settings(settings: &crate::execution::MetaSettings) -> NonCodeValue {
+        let mut properties: Vec<Node<ObjectProperty>> = vec![ObjectProperty::new(
+            Identifier::new(annotations::SETTINGS_UNIT_LENGTH),
+            Expr::Identifier(Box::new(Identifier::new(&settings.default_length_units.to_string()))),
+        )];
+
+        if settings.default_angle_units != Default::default() {
+            properties.push(ObjectProperty::new(
+                Identifier::new(annotations::SETTINGS_UNIT_ANGLE),
+                Expr::Identifier(Box::new(Identifier::new(&settings.default_angle_units.to_string()))),
+            ));
+        }
+        NonCodeValue::Annotation {
+            name: Identifier::new(annotations::SETTINGS),
+            properties: Some(properties),
+        }
+    }
 }
 
 #[derive(Debug, Default, Clone, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
@@ -2337,6 +2401,14 @@ impl Node<ObjectProperty> {
 }
 
 impl ObjectProperty {
+    pub fn new(key: Node<Identifier>, value: Expr) -> Node<Self> {
+        Node::no_src(Self {
+            key,
+            value,
+            digest: None,
+        })
+    }
+
     /// Returns a hover value that includes the given character position.
     pub fn get_hover_value_for_position(&self, pos: usize, code: &str) -> Option<Hover> {
         let value_source_range: SourceRange = self.value.clone().into();
@@ -3756,4 +3828,98 @@ const cylinder = startSketchOn('-XZ')
 
         assert_eq!(l.raw, "false");
     }
+
+    #[tokio::test(flavor = "multi_thread")]
+    async fn test_parse_get_meta_settings_inch() {
+        let some_program_string = r#"@settings(defaultLengthUnit = inch)
+
+startSketchOn('XY')"#;
+        let program = crate::parsing::top_level_parse(some_program_string).unwrap();
+        let result = program.get_meta_settings().unwrap();
+        assert!(result.is_some());
+        let meta_settings = result.unwrap();
+
+        assert_eq!(
+            meta_settings.default_length_units,
+            crate::execution::kcl_value::UnitLen::Inches
+        );
+    }
+
+    #[tokio::test(flavor = "multi_thread")]
+    async fn test_parse_get_meta_settings_inch_to_mm() {
+        let some_program_string = r#"@settings(defaultLengthUnit = inch)
+
+startSketchOn('XY')"#;
+        let mut program = crate::parsing::top_level_parse(some_program_string).unwrap();
+        let result = program.get_meta_settings().unwrap();
+        assert!(result.is_some());
+        let meta_settings = result.unwrap();
+
+        assert_eq!(
+            meta_settings.default_length_units,
+            crate::execution::kcl_value::UnitLen::Inches
+        );
+
+        // Edit the ast.
+        let new_program = program
+            .change_meta_settings(crate::execution::MetaSettings {
+                default_length_units: crate::execution::kcl_value::UnitLen::Mm,
+                ..Default::default()
+            })
+            .unwrap();
+
+        let result = new_program.get_meta_settings().unwrap();
+        assert!(result.is_some());
+        let meta_settings = result.unwrap();
+
+        assert_eq!(
+            meta_settings.default_length_units,
+            crate::execution::kcl_value::UnitLen::Mm
+        );
+
+        let formatted = new_program.recast(&Default::default(), 0);
+
+        assert_eq!(
+            formatted,
+            r#"@settings(defaultLengthUnit = mm)
+
+
+startSketchOn('XY')
+"#
+        );
+    }
+
+    #[tokio::test(flavor = "multi_thread")]
+    async fn test_parse_get_meta_settings_nothing_to_mm() {
+        let some_program_string = r#"startSketchOn('XY')"#;
+        let mut program = crate::parsing::top_level_parse(some_program_string).unwrap();
+        let result = program.get_meta_settings().unwrap();
+        assert!(result.is_none());
+
+        // Edit the ast.
+        let new_program = program
+            .change_meta_settings(crate::execution::MetaSettings {
+                default_length_units: crate::execution::kcl_value::UnitLen::Mm,
+                ..Default::default()
+            })
+            .unwrap();
+
+        let result = new_program.get_meta_settings().unwrap();
+        assert!(result.is_some());
+        let meta_settings = result.unwrap();
+
+        assert_eq!(
+            meta_settings.default_length_units,
+            crate::execution::kcl_value::UnitLen::Mm
+        );
+
+        let formatted = new_program.recast(&Default::default(), 0);
+
+        assert_eq!(
+            formatted,
+            r#"@settings(defaultLengthUnit = mm)
+startSketchOn('XY')
+"#
+        );
+    }
 }
diff --git a/src/wasm-lib/kcl/src/std/math.rs b/src/wasm-lib/kcl/src/std/math.rs
index 72ad04672..c639940c8 100644
--- a/src/wasm-lib/kcl/src/std/math.rs
+++ b/src/wasm-lib/kcl/src/std/math.rs
@@ -3,14 +3,13 @@
 use anyhow::Result;
 use derive_docs::stdlib;
 
+use super::args::FromArgs;
 use crate::{
     errors::{KclError, KclErrorDetails},
     execution::{ExecState, KclValue},
     std::Args,
 };
 
-use super::args::FromArgs;
-
 /// Compute the remainder after dividing `num` by `div`.
 /// If `num` is negative, the result will be too.
 pub async fn rem(_exec_state: &mut ExecState, args: Args) -> Result<KclValue, KclError> {
diff --git a/src/wasm-lib/kcl/src/std/sketch.rs b/src/wasm-lib/kcl/src/std/sketch.rs
index bb841f547..37a01720f 100644
--- a/src/wasm-lib/kcl/src/std/sketch.rs
+++ b/src/wasm-lib/kcl/src/std/sketch.rs
@@ -11,12 +11,11 @@ use parse_display::{Display, FromStr};
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 
-use crate::execution::{Artifact, ArtifactId};
 use crate::{
     errors::{KclError, KclErrorDetails},
     execution::{
-        BasePath, ExecState, Face, GeoMeta, KclValue, Path, Plane, Point2d, Point3d, Sketch, SketchSet, SketchSurface,
-        Solid, TagEngineInfo, TagIdentifier,
+        Artifact, ArtifactId, BasePath, ExecState, Face, GeoMeta, KclValue, Path, Plane, Point2d, Point3d, Sketch,
+        SketchSet, SketchSurface, Solid, TagEngineInfo, TagIdentifier,
     },
     parsing::ast::types::TagNode,
     std::{
@@ -2250,7 +2249,10 @@ mod tests {
 
     use pretty_assertions::assert_eq;
 
-    use crate::{execution::TagIdentifier, std::sketch::PlaneData, std::utils::calculate_circle_center};
+    use crate::{
+        execution::TagIdentifier,
+        std::{sketch::PlaneData, utils::calculate_circle_center},
+    };
 
     #[test]
     fn test_deserialize_plane_data() {
diff --git a/src/wasm-lib/src/wasm.rs b/src/wasm-lib/src/wasm.rs
index 7f4ff7f4b..a5b63be63 100644
--- a/src/wasm-lib/src/wasm.rs
+++ b/src/wasm-lib/src/wasm.rs
@@ -614,3 +614,18 @@ pub fn calculate_circle_from_3_points(ax: f64, ay: f64, bx: f64, by: f64, cx: f6
         radius: result.radius,
     }
 }
+
+/// Takes a kcl string and Meta settings and changes the meta settings in the kcl string.
+#[wasm_bindgen]
+pub fn change_kcl_settings(code: &str, settings_str: &str) -> Result<String, String> {
+    console_error_panic_hook::set_once();
+
+    let settings: kcl_lib::MetaSettings = serde_json::from_str(settings_str).map_err(|e| e.to_string())?;
+    let mut program = Program::parse_no_errs(code).map_err(|e| e.to_string())?;
+
+    let new_program = program.change_meta_settings(settings).map_err(|e| e.to_string())?;
+
+    let formatted = new_program.recast();
+
+    Ok(formatted)
+}