diff --git a/crates/symbolicator-proguard/src/interface.rs b/crates/symbolicator-proguard/src/interface.rs
index 8b1378917..286501196 100644
--- a/crates/symbolicator-proguard/src/interface.rs
+++ b/crates/symbolicator-proguard/src/interface.rs
@@ -1 +1,62 @@
+use std::sync::Arc;
 
+use serde::{Deserialize, Serialize};
+use symbolic::common::DebugId;
+use symbolicator_service::types::{RawObjectInfo, Scope};
+use symbolicator_sources::SourceConfig;
+
+#[derive(Debug, Clone)]
+pub struct SymbolicateJvmStacktraces {
+    pub scope: Scope,
+    pub sources: Arc<[SourceConfig]>,
+    pub exceptions: Vec<JvmException>,
+    pub modules: Vec<JvmModule>,
+    /// Whether to apply source context for the stack frames.
+    pub apply_source_context: bool,
+}
+
+#[derive(Debug, Default, Clone, Deserialize, Serialize, PartialEq, Eq)]
+pub struct JvmFrame {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub function: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub filename: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub module: Option<String>,
+
+    pub abs_path: String,
+
+    pub lineno: u32,
+
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub pre_context: Vec<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub context_line: Option<String>,
+
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub post_context: Vec<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub in_app: Option<bool>,
+}
+
+#[derive(Debug, Default, Clone, Deserialize, Serialize, PartialEq, Eq)]
+pub struct JvmException {
+    #[serde(rename = "type")]
+    ty: String,
+    module: String,
+    stacktrace: JvmStacktrace,
+}
+
+#[derive(Debug, Default, Clone, Deserialize, Serialize, PartialEq, Eq)]
+pub struct JvmStacktrace {
+    frames: Vec<JvmFrame>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, Eq)]
+pub struct JvmModule {
+    uuid: DebugId,
+}