diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1de2789..fe5f9c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,10 +15,13 @@ This version is compatible with [`960f8d139940fa0814d3fac44da9a2975642f5d3`](htt
   - Exposed `run_chia_program`
   - Exposed `run_clvm`
   - Exposed `LazyNode`
+    - Added `toJSON()` method to `LazyNode` (This is not implemented in `clvm_wasm`)
   - Exposed `Flag`
   - Exposed `serialized_length`
   - Exposed `node_from_bytes`
 - Added `asUint8Array()` method to `Stream`
+- Added `toJSON()` method to `Bytes`
+- Added `toJSON()` method to `SExp`
 - Added tests
 
 ## [2.0.1]
diff --git a/src/SExp.ts b/src/SExp.ts
index df30afe..69b8319 100644
--- a/src/SExp.ts
+++ b/src/SExp.ts
@@ -321,6 +321,16 @@ export class SExp implements CLVMType {
     return this.as_bin().hex();
   }
   
+  public toJSON(){
+    if(this.pair){
+      return this.pair;
+    }
+    if(this.atom){
+      return this.atom.hex();
+    }
+    throw new EvalError("Invalid object", this);
+  }
+  
   public __repr__(){
     return `SExp(${this.as_bin().hex()})`;
   }
diff --git a/src/__clvm_wasm__.ts b/src/__clvm_wasm__.ts
index 899d06c..5efc501 100644
--- a/src/__clvm_wasm__.ts
+++ b/src/__clvm_wasm__.ts
@@ -11,7 +11,9 @@
  * 4. Annotate typings, fix lint issues
  * 5. Paste loader code preserved in the previous procedure
  * 6. Add `__wb*` functions to the `imports` object.
+ * 7. Add `toJSON()` method to `LazyNode`.
  */
+import {Word32Array} from "jscrypto/Word32Array";
 
 type ClvmWasmExports = {
   memory: WebAssembly.Memory;
@@ -397,6 +399,16 @@ export class LazyNode {
       wasm.__wbindgen_add_to_stack_pointer(16);
     }
   }
+  
+  toJSON() {
+    if(this.pair){
+      return this.pair;
+    }
+    if(this.atom){
+      return (new Word32Array(this.atom)).toString();
+    }
+    throw new Error("Invalid object");
+  }
 }
 
 export function __wbg_lazynode_new(arg0: number) {
diff --git a/src/__type_compatibility__.ts b/src/__type_compatibility__.ts
index 85ce460..f4813ac 100644
--- a/src/__type_compatibility__.ts
+++ b/src/__type_compatibility__.ts
@@ -287,6 +287,10 @@ export class Bytes {
   
     return 0;
   }
+  
+  public toJSON(){
+    return this.hex();
+  }
 }
 
 export function b(utf8Str: string, type:"utf8"|"hex" = "utf8"){