diff --git a/src/lib.rs b/src/lib.rs
index 96c0c14..b9b4e4e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,6 +19,7 @@ mod ipns;
 mod object;
 mod version;
 
+#[derive(Clone, PartialEq, Hash, Debug)]
 pub struct IpfsApi {
     server: String,
     port: u16
diff --git a/src/object.rs b/src/object.rs
index 9c952a0..618454e 100644
--- a/src/object.rs
+++ b/src/object.rs
@@ -13,8 +13,12 @@ error_chain! {
 #[derive(Deserialize, Debug, PartialEq, Hash)]
 #[serde(rename_all="PascalCase")]
 pub struct ObjectStats {
-    hash: String,
-    cumulative_size: u64
+    pub hash: String,
+    pub num_links: u64,
+    pub block_size: u64,
+    pub links_size: u64,
+    pub data_size: u64,
+    pub cumulative_size: u64
 }
 
 impl IpfsApi {
@@ -39,9 +43,13 @@ mod tests {
         let stats = api.object_stats("QmWATWQ7fVPP2EFGu71UkfnqhYXDYH566qy47CnJDgvs8u").unwrap();
         let desired = ObjectStats {
             hash: "QmWATWQ7fVPP2EFGu71UkfnqhYXDYH566qy47CnJDgvs8u".to_string(),
+            num_links: 0,
+            block_size: 20,
+            links_size: 2,
+            data_size: 18,
             cumulative_size: 20,
         };
 
         assert_eq!(stats, desired);
     }
-}
\ No newline at end of file
+}
diff --git a/src/pin.rs b/src/pin.rs
index 1490758..694d149 100644
--- a/src/pin.rs
+++ b/src/pin.rs
@@ -15,27 +15,27 @@ error_chain! {
 #[derive(Deserialize, Debug, PartialEq, Hash)]
 #[serde(rename_all="PascalCase")]
 pub struct PinAddResponse {
-    pins: Vec<String>,
-    progress: Option<u64>
+    pub pins: Vec<String>,
+    pub progress: Option<u64>
 }
 
 #[derive(Deserialize, Debug, PartialEq, Hash)]
 #[serde(rename_all="PascalCase")]
 pub struct PinRmResponse {
-    pins: Vec<String>
+    pub pins: Vec<String>
 }
 
 #[derive(Deserialize, Debug, PartialEq, Hash)]
 pub struct PinType {
     #[serde(rename = "Type")]
-    objtype: String,
+    pub objtype: String,
 }
 
 #[derive(Deserialize, Debug, PartialEq)]
 #[serde(rename_all="PascalCase")]
 pub struct PinList {
     // keys: Vec<String>
-    keys: HashMap<String, PinType>
+    pub keys: HashMap<String, PinType>
 }
 
 impl IpfsApi {
@@ -82,7 +82,6 @@ impl IpfsApi {
 
 #[cfg(test)]
 mod tests {
-    use std::collections::HashMap;
     use IpfsApi;
     use super::*;
 
@@ -132,4 +131,4 @@ mod tests {
         };
         assert_eq!(resp.unwrap(), desired);
     }
-}
\ No newline at end of file
+}
diff --git a/src/pubsub.rs b/src/pubsub.rs
index f10bfe2..ee8dd53 100644
--- a/src/pubsub.rs
+++ b/src/pubsub.rs
@@ -22,9 +22,9 @@ struct JsonPubSubMessage {
 
 #[derive(Debug)]
 pub struct PubSubMessage {
-    data: Option<Vec<u8>>,
-    from: Option<Vec<u8>>,
-    seqno: Option<Vec<u8>>
+    pub data: Option<Vec<u8>>,
+    pub from: Option<Vec<u8>>,
+    pub seqno: Option<Vec<u8>>
 }
 
 impl PubSubMessage {
diff --git a/src/version.rs b/src/version.rs
index c8deee8..079c1cb 100644
--- a/src/version.rs
+++ b/src/version.rs
@@ -13,11 +13,11 @@ error_chain! {
 #[derive(Deserialize, Debug)]
 #[serde(rename_all="PascalCase")]
 pub struct IpfsVersion {
-    version: String,
-    commit: String,
-    repo: String,
-    system: String,
-    golang: String
+    pub version: String,
+    pub commit: String,
+    pub repo: String,
+    pub system: String,
+    pub golang: String
 }
 
 impl IpfsApi {