diff --git a/build.gradle.kts b/build.gradle.kts
index a711d5b..60f2fb9 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -24,6 +24,7 @@ dependencies {
   implementation("org.jetbrains.kotlin:kotlin-bom")
   implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
   implementation("com.github.ajalt.clikt:clikt:4.2.0")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.0-RC")
 }
 
 tasks.withType<KotlinCompile> {
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/BooleanLiteral.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/BooleanLiteral.kt
index f2368d8..86ce0a7 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/BooleanLiteral.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/BooleanLiteral.kt
@@ -1,7 +1,11 @@
 package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("booleanLiteral")
 class BooleanLiteral(val value: Boolean) : Expression() {
   override val type: NodeType = NodeType.BooleanLiteral
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Define.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Define.kt
index adc8d2d..334af6b 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Define.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Define.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("define")
 class Define(val symbol: Symbol, val value: Expression) : Expression() {
   override val type: NodeType = NodeType.Define
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Expression.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Expression.kt
index a32dfbc..9e15fd5 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Expression.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Expression.kt
@@ -1,3 +1,6 @@
 package gay.pizza.pork.ast.nodes
 
-abstract class Expression : Node()
+import kotlinx.serialization.Serializable
+
+@Serializable
+sealed class Expression : Node()
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/FunctionCall.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/FunctionCall.kt
index 12b23b3..e0ba161 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/FunctionCall.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/FunctionCall.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("functionCall")
 class FunctionCall(val symbol: Symbol, val arguments: List<Expression>) : Expression() {
   override val type: NodeType = NodeType.FunctionCall
 
@@ -13,4 +17,11 @@ class FunctionCall(val symbol: Symbol, val arguments: List<Expression>) : Expres
     if (other !is FunctionCall) return false
     return other.symbol == symbol && other.arguments == arguments
   }
+
+  override fun hashCode(): Int {
+    var result = symbol.hashCode()
+    result = 31 * result + arguments.hashCode()
+    result = 31 * result + type.hashCode()
+    return result
+  }
 }
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/If.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/If.kt
index aed20ee..6cb010e 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/If.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/If.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("if")
 class If(
   val condition: Expression,
   val thenExpression: Expression,
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperation.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperation.kt
index 043d3bb..9fb9d47 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperation.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperation.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("infixOperation")
 class InfixOperation(
   val left: Expression,
   val op: InfixOperator,
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperator.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperator.kt
index d311697..e5b971e 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperator.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/InfixOperator.kt
@@ -1,5 +1,10 @@
 package gay.pizza.pork.ast.nodes
 
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+@SerialName("infixOperator")
 enum class InfixOperator(val token: String) {
   Plus("+"),
   Minus("-"),
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/IntLiteral.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/IntLiteral.kt
index 4966b39..541a214 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/IntLiteral.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/IntLiteral.kt
@@ -1,7 +1,11 @@
 package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("intLiteral")
 class IntLiteral(val value: Int) : Expression() {
   override val type: NodeType = NodeType.IntLiteral
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Lambda.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Lambda.kt
index 156de36..d23254b 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Lambda.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Lambda.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("lambda")
 class Lambda(val arguments: List<Symbol>, val expressions: List<Expression>) : Expression() {
   override val type: NodeType = NodeType.Lambda
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/ListLiteral.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/ListLiteral.kt
index 64a2b1a..ae848f1 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/ListLiteral.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/ListLiteral.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("listLiteral")
 class ListLiteral(val items: List<Expression>) : Expression() {
   override val type: NodeType = NodeType.ListLiteral
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Node.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Node.kt
index 1cfbb72..a7d2f6f 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Node.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Node.kt
@@ -3,8 +3,10 @@ package gay.pizza.pork.ast.nodes
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.Printer
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.Serializable
 
-abstract class Node {
+@Serializable
+sealed class Node {
   abstract val type: NodeType
   open fun <T> visitChildren(visitor: NodeVisitor<T>): List<T> = emptyList()
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Parentheses.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Parentheses.kt
index b7be5fc..7e1f9b4 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Parentheses.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Parentheses.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("parentheses")
 class Parentheses(val expression: Expression) : Expression() {
   override val type: NodeType = NodeType.Parentheses
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperation.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperation.kt
index dd00638..e025225 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperation.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperation.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("prefixOperation")
 class PrefixOperation(val op: PrefixOperator, val expression: Expression) : Expression() {
   override val type: NodeType = NodeType.PrefixOperation
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperator.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperator.kt
index 7bd9d75..051b7cf 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperator.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/PrefixOperator.kt
@@ -1,5 +1,10 @@
 package gay.pizza.pork.ast.nodes
 
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+@SerialName("prefixOperator")
 enum class PrefixOperator(val token: String) {
   Negate("!")
 }
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Program.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Program.kt
index 586b922..a664124 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Program.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Program.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("program")
 class Program(val expressions: List<Expression>) : Node() {
   override val type: NodeType = NodeType.Program
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/Symbol.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/Symbol.kt
index 6efaf42..5d81b1f 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/Symbol.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/Symbol.kt
@@ -1,7 +1,11 @@
 package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("symbol")
 class Symbol(val id: String) : Node() {
   override val type: NodeType = NodeType.Symbol
 
diff --git a/src/main/kotlin/gay/pizza/pork/ast/nodes/SymbolReference.kt b/src/main/kotlin/gay/pizza/pork/ast/nodes/SymbolReference.kt
index 3156376..ab9deb7 100644
--- a/src/main/kotlin/gay/pizza/pork/ast/nodes/SymbolReference.kt
+++ b/src/main/kotlin/gay/pizza/pork/ast/nodes/SymbolReference.kt
@@ -2,7 +2,11 @@ package gay.pizza.pork.ast.nodes
 
 import gay.pizza.pork.ast.NodeType
 import gay.pizza.pork.ast.NodeVisitor
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
+@Serializable
+@SerialName("symbolReference")
 class SymbolReference(val symbol: Symbol) : Expression() {
   override val type: NodeType = NodeType.SymbolReference
 
diff --git a/src/main/kotlin/gay/pizza/pork/cli/AstCommand.kt b/src/main/kotlin/gay/pizza/pork/cli/AstCommand.kt
new file mode 100644
index 0000000..fbd87c0
--- /dev/null
+++ b/src/main/kotlin/gay/pizza/pork/cli/AstCommand.kt
@@ -0,0 +1,31 @@
+package gay.pizza.pork.cli
+
+import com.github.ajalt.clikt.core.CliktCommand
+import com.github.ajalt.clikt.parameters.arguments.argument
+import com.github.ajalt.clikt.parameters.types.path
+import gay.pizza.pork.ast.nodes.Node
+import gay.pizza.pork.parse.PorkParser
+import gay.pizza.pork.parse.PorkTokenizer
+import gay.pizza.pork.parse.StringCharSource
+import gay.pizza.pork.parse.TokenStreamSource
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import kotlin.io.path.readText
+
+@OptIn(ExperimentalSerializationApi::class)
+class AstCommand : CliktCommand(help = "Print AST", name = "ast") {
+  val path by argument("file").path(mustExist = true, canBeDir = false)
+
+  private val json = Json {
+    prettyPrint = true
+    prettyPrintIndent = "  "
+    classDiscriminator = "\$"
+  }
+
+  override fun run() {
+    val content = path.readText()
+    val tokenStream = PorkTokenizer(StringCharSource(content)).tokenize()
+    val program = PorkParser(TokenStreamSource(tokenStream)).readProgram()
+    println(json.encodeToString(Node.serializer(), program))
+  }
+}
diff --git a/src/main/kotlin/gay/pizza/pork/cli/RootCommand.kt b/src/main/kotlin/gay/pizza/pork/cli/RootCommand.kt
index 69f82cb..fae9406 100644
--- a/src/main/kotlin/gay/pizza/pork/cli/RootCommand.kt
+++ b/src/main/kotlin/gay/pizza/pork/cli/RootCommand.kt
@@ -13,6 +13,7 @@ class RootCommand : CliktCommand(
       HighlightCommand(),
       TokenizeCommand(),
       ReprintCommand(),
+      AstCommand(),
       GenerateKotlinCommand()
     )
   }