diff --git a/rpc/types/Cargo.toml b/rpc/types/Cargo.toml
index 08b13b1..cfe7e47 100644
--- a/rpc/types/Cargo.toml
+++ b/rpc/types/Cargo.toml
@@ -16,7 +16,7 @@ epee    = ["dep:cuprate-epee-encoding"]
 [dependencies]
 cuprate-epee-encoding = { path = "../../net/epee-encoding", optional = true }
 cuprate-fixed-bytes   = { path = "../../net/fixed-bytes" }
-cuprate-types         = { path = "../../types" }
+cuprate-types         = { path = "../../types", default-features = false, features = ["epee", "serde"] }
 
 paste        = { workspace = true }
 serde        = { workspace = true, optional = true }
diff --git a/rpc/types/src/json.rs b/rpc/types/src/json.rs
index fb6e44b..d3426b4 100644
--- a/rpc/types/src/json.rs
+++ b/rpc/types/src/json.rs
@@ -635,7 +635,9 @@ define_request_and_response! {
     AccessResponseBase {
         blob: String,
         block_header: BlockHeader,
-        json: String, // FIXME: this should be defined in a struct, it has many fields.
+        /// `cuprate_rpc_types::json::block::Block` should be used
+        /// to create this JSON string in a type-safe manner.
+        json: String,
         miner_tx_hash: String,
         tx_hashes: Vec<String> = default_vec::<String>(), "default_vec",
     }
diff --git a/rpc/types/src/misc/tx_entry.rs b/rpc/types/src/misc/tx_entry.rs
index 5151cee..807c202 100644
--- a/rpc/types/src/misc/tx_entry.rs
+++ b/rpc/types/src/misc/tx_entry.rs
@@ -72,6 +72,8 @@ pub enum TxEntry {
     /// This entry exists in the transaction pool.
     InPool {
         as_hex: String,
+        /// `cuprate_rpc_types::json::tx::Transaction` should be used
+        /// to create this JSON string in a type-safe manner.
         as_json: String,
         block_height: u64,
         block_timestamp: u64,
@@ -89,6 +91,8 @@ pub enum TxEntry {
     /// This entry _does not_ exist in the transaction pool.
     NotInPool {
         as_hex: String,
+        /// `cuprate_rpc_types::json::tx::Transaction` should be used
+        /// to create this JSON string in a type-safe manner.
         as_json: String,
         double_spend_seen: bool,
         prunable_as_hex: String,
diff --git a/rpc/types/src/other.rs b/rpc/types/src/other.rs
index 5b04089..e7f3394 100644
--- a/rpc/types/src/other.rs
+++ b/rpc/types/src/other.rs
@@ -140,6 +140,8 @@ define_request_and_response! {
     #[doc = serde_doc_test!(GET_TRANSACTIONS_RESPONSE)]
     AccessResponseBase {
         txs_as_hex: Vec<String> = default_vec::<String>(), "default_vec",
+        /// `cuprate_rpc_types::json::tx::Transaction` should be used
+        /// to create this JSON string in a type-safe manner.
         txs_as_json: Vec<String> = default_vec::<String>(), "default_vec",
         missed_tx: Vec<String> = default_vec::<String>(), "default_vec",
         txs: Vec<TxEntry> = default_vec::<TxEntry>(), "default_vec",