diff --git a/crates/nodata/src/gen/nodata.rs b/crates/nodata/src/gen/nodata.rs
index 84dde39..4a7329f 100644
--- a/crates/nodata/src/gen/nodata.rs
+++ b/crates/nodata/src/gen/nodata.rs
@@ -2,19 +2,42 @@
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PublishEventRequest {
-    #[prost(string, tag = "1")]
+    #[prost(string, tag="1")]
     pub topic: ::prost::alloc::string::String,
-    #[prost(message, optional, tag = "2")]
+    #[prost(message, optional, tag="2")]
     pub published: ::core::option::Option<::prost_types::Timestamp>,
-    #[prost(string, tag = "3")]
+    #[prost(string, tag="3")]
     pub key: ::prost::alloc::string::String,
-    #[prost(bytes = "vec", tag = "4")]
+    #[prost(bytes="vec", tag="4")]
     pub value: ::prost::alloc::vec::Vec<u8>,
-    #[prost(string, optional, tag = "5")]
+    #[prost(string, optional, tag="5")]
     pub id: ::core::option::Option<::prost::alloc::string::String>,
 }
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
-pub struct PublishEventResponse {}
+pub struct PublishEventResponse {
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct GetTopicsRequest {
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct GetTopicsResponse {
+    #[prost(string, repeated, tag="1")]
+    pub topics: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct GetKeysRequest {
+    #[prost(string, tag="1")]
+    pub topic: ::prost::alloc::string::String,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct GetKeysResponse {
+    #[prost(string, repeated, tag="1")]
+    pub keys: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+}
 include!("nodata.tonic.rs");
-// @@protoc_insertion_point(module)
+// @@protoc_insertion_point(module)
\ No newline at end of file
diff --git a/crates/nodata/src/gen/nodata.tonic.rs b/crates/nodata/src/gen/nodata.tonic.rs
index 8c85f58..75710ed 100644
--- a/crates/nodata/src/gen/nodata.tonic.rs
+++ b/crates/nodata/src/gen/nodata.tonic.rs
@@ -109,6 +109,50 @@ pub mod no_data_client {
                 .insert(GrpcMethod::new("nodata.NoData", "PublishEvent"));
             self.inner.unary(req, path, codec).await
         }
+        pub async fn get_topics(
+            &mut self,
+            request: impl tonic::IntoRequest<super::GetTopicsRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::GetTopicsResponse>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static("/nodata.NoData/GetTopics");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new("nodata.NoData", "GetTopics"));
+            self.inner.unary(req, path, codec).await
+        }
+        pub async fn get_keys(
+            &mut self,
+            request: impl tonic::IntoRequest<super::GetKeysRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::GetKeysResponse>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::new(
+                        tonic::Code::Unknown,
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static("/nodata.NoData/GetKeys");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new("nodata.NoData", "GetKeys"));
+            self.inner.unary(req, path, codec).await
+        }
     }
 }
 /// Generated server implementations.
@@ -125,6 +169,17 @@ pub mod no_data_server {
             tonic::Response<super::PublishEventResponse>,
             tonic::Status,
         >;
+        async fn get_topics(
+            &self,
+            request: tonic::Request<super::GetTopicsRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::GetTopicsResponse>,
+            tonic::Status,
+        >;
+        async fn get_keys(
+            &self,
+            request: tonic::Request<super::GetKeysRequest>,
+        ) -> std::result::Result<tonic::Response<super::GetKeysResponse>, tonic::Status>;
     }
     #[derive(Debug)]
     pub struct NoDataServer<T: NoData> {
@@ -251,6 +306,94 @@ pub mod no_data_server {
                     };
                     Box::pin(fut)
                 }
+                "/nodata.NoData/GetTopics" => {
+                    #[allow(non_camel_case_types)]
+                    struct GetTopicsSvc<T: NoData>(pub Arc<T>);
+                    impl<T: NoData> tonic::server::UnaryService<super::GetTopicsRequest>
+                    for GetTopicsSvc<T> {
+                        type Response = super::GetTopicsResponse;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::GetTopicsRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                <T as NoData>::get_topics(&inner, request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = GetTopicsSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                "/nodata.NoData/GetKeys" => {
+                    #[allow(non_camel_case_types)]
+                    struct GetKeysSvc<T: NoData>(pub Arc<T>);
+                    impl<T: NoData> tonic::server::UnaryService<super::GetKeysRequest>
+                    for GetKeysSvc<T> {
+                        type Response = super::GetKeysResponse;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::GetKeysRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                <T as NoData>::get_keys(&inner, request).await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = GetKeysSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
                 _ => {
                     Box::pin(async move {
                         Ok(
diff --git a/crates/nodata/src/grpc.rs b/crates/nodata/src/grpc.rs
index 26bf2b5..2809d17 100644
--- a/crates/nodata/src/grpc.rs
+++ b/crates/nodata/src/grpc.rs
@@ -48,6 +48,32 @@ impl no_data_server::NoData for GrpcServer {
 
         Ok(tonic::Response::new(PublishEventResponse {}))
     }
+
+    async fn get_topics(
+        &self,
+        _request: tonic::Request<GetTopicsRequest>,
+    ) -> std::result::Result<tonic::Response<GetTopicsResponse>, tonic::Status> {
+        let topics = self.state.staging.get_topics().await.map_err(|e| {
+            tracing::warn!(error = e.to_string(), "failed to get topics");
+            tonic::Status::internal(e.to_string())
+        })?;
+
+        Ok(tonic::Response::new(GetTopicsResponse { topics }))
+    }
+
+    async fn get_keys(
+        &self,
+        request: tonic::Request<GetKeysRequest>,
+    ) -> std::result::Result<tonic::Response<GetKeysResponse>, tonic::Status> {
+        let req = request.into_inner();
+
+        let keys = self.state.staging.get_keys(&req.topic).await.map_err(|e| {
+            tracing::warn!(error = e.to_string(), "failed to get keys");
+            tonic::Status::internal(e.to_string())
+        })?;
+
+        Ok(tonic::Response::new(GetKeysResponse { keys }))
+    }
 }
 
 impl From<PublishEventRequest> for StagingEvent {
diff --git a/crates/nodata/src/main.rs b/crates/nodata/src/main.rs
index 16d1993..836ba42 100644
--- a/crates/nodata/src/main.rs
+++ b/crates/nodata/src/main.rs
@@ -8,7 +8,7 @@ use std::net::SocketAddr;
 
 use chrono::{Datelike, Timelike};
 use clap::{Parser, Subcommand, ValueEnum};
-use grpc::{GrpcServer, PublishEventRequest};
+use grpc::{GetKeysRequest, GetTopicsRequest, GrpcServer, PublishEventRequest};
 use http::HttpServer;
 use mad::Mad;
 use state::SharedState;
@@ -59,6 +59,11 @@ enum ClientCommands {
         #[arg(long = "generate-id")]
         generate_id: bool,
     },
+    GetTopics {},
+    GetKeys {
+        #[arg(long)]
+        topic: String,
+    },
 }
 
 #[tokio::main]
@@ -89,8 +94,7 @@ async fn main() -> anyhow::Result<()> {
                 id,
                 generate_id,
             } => {
-                let mut client =
-                    crate::grpc::no_data_client::NoDataClient::connect(grpc_host).await?;
+                let mut client = create_client(grpc_host).await?;
 
                 let timestamp = chrono::Utc::now();
 
@@ -122,8 +126,36 @@ async fn main() -> anyhow::Result<()> {
                     })
                     .await?;
             }
+            ClientCommands::GetTopics {} => {
+                let mut client = create_client(grpc_host).await?;
+
+                println!("Listing topics");
+                let topics = client.get_topics(GetTopicsRequest {}).await?;
+
+                for topic in topics.into_inner().topics {
+                    println!("{topic}");
+                }
+            }
+            ClientCommands::GetKeys { topic } => {
+                let mut client = create_client(grpc_host).await?;
+
+                println!("Listing keys for topic: {}", topic);
+                let keys = client.get_keys(GetKeysRequest { topic }).await?;
+
+                for key in keys.into_inner().keys {
+                    println!("{key}");
+                }
+            }
         },
     }
 
     Ok(())
 }
+
+async fn create_client(
+    grpc_host: String,
+) -> anyhow::Result<crate::grpc::no_data_client::NoDataClient<tonic::transport::Channel>> {
+    let client = crate::grpc::no_data_client::NoDataClient::connect(grpc_host).await?;
+
+    Ok(client)
+}
diff --git a/crates/nodata/src/services/staging.rs b/crates/nodata/src/services/staging.rs
index 49d506a..566ff56 100644
--- a/crates/nodata/src/services/staging.rs
+++ b/crates/nodata/src/services/staging.rs
@@ -61,6 +61,23 @@ impl Staging {
 
         Ok(())
     }
+
+    pub async fn get_topics(&self) -> anyhow::Result<Vec<String>> {
+        let store = self.store.read().unwrap();
+
+        Ok(store.keys().cloned().collect::<Vec<_>>())
+    }
+
+    pub async fn get_keys(&self, topic: impl Into<String>) -> anyhow::Result<Vec<String>> {
+        let store = self.store.read().unwrap();
+
+        let items = store
+            .get(&topic.into())
+            .map(|tree| tree.keys())
+            .unwrap_or_default();
+
+        Ok(items.cloned().collect::<Vec<_>>())
+    }
 }
 
 pub trait StagingState {
diff --git a/proto/nomicon.proto b/proto/nomicon.proto
index fe0e518..9bf12ca 100644
--- a/proto/nomicon.proto
+++ b/proto/nomicon.proto
@@ -6,6 +6,8 @@ package nodata;
 
 service NoData {
   rpc PublishEvent(PublishEventRequest) returns (PublishEventResponse) {}
+  rpc GetTopics(GetTopicsRequest) returns (GetTopicsResponse) {}
+  rpc GetKeys(GetKeysRequest) returns (GetKeysResponse) {}
 }
 
 message PublishEventRequest {
@@ -19,3 +21,14 @@ message PublishEventRequest {
 message PublishEventResponse {
   
 }
+
+message GetTopicsRequest {}
+message GetTopicsResponse {
+  repeated string topics = 1;
+}
+message GetKeysRequest {
+  string topic = 1;
+}
+message GetKeysResponse {
+  repeated string keys = 1;
+}