diff --git a/packages/namada/NamadaConnection.ts b/packages/namada/NamadaConnection.ts
index 44656a5afd..236a724bd1 100644
--- a/packages/namada/NamadaConnection.ts
+++ b/packages/namada/NamadaConnection.ts
@@ -122,12 +122,19 @@ export async function fetchProtocolParameters (
 ) {
   const keys = connection.decode.storage_keys();
   const [
-    maxBlockDuration, maxGasForBlock, feeUnshieldingGasLimit, gasCostTable,
+    maxBlockDuration,
+    maxGasForBlock,
+    feeUnshieldingGasLimit,
+    gasCostTable,
   ] = await Promise.all([
-    connection.fetchStorageValueImpl(keys.maxBlockDuration),
-    connection.fetchStorageValueImpl(keys.maxGasForBlock),
-    connection.fetchStorageValueImpl(keys.feeUnshieldingGasLimit),
-    connection.fetchStorageValueImpl(keys.gasCostTable),
+    connection.fetchStorageValueImpl(keys.maxBlockDuration)
+      .then(x=>connection.decode.u64(x)),
+    connection.fetchStorageValueImpl(keys.maxGasForBlock)
+      .then(x=>connection.decode.u64(x)),
+    connection.fetchStorageValueImpl(keys.feeUnshieldingGasLimit)
+      .then(x=>connection.decode.u64(x)),
+    connection.fetchStorageValueImpl(keys.gasCostTable)
+      .then(x=>connection.decode.gas_cost_table(x)),
   ])
   return {
     maxBlockDuration,
diff --git a/packages/namada/NamadaDecode.ts b/packages/namada/NamadaDecode.ts
index e2eb0d0782..e76cc47776 100644
--- a/packages/namada/NamadaDecode.ts
+++ b/packages/namada/NamadaDecode.ts
@@ -14,10 +14,12 @@ export async function initDecoder (decoder: string|URL|Uint8Array): Promise<void
 export { Decode }
 
 export interface NamadaDecoder {
+  u64                 (_: Uint8Array): bigint
   address_to_amount   (_: Uint8Array): Record<string, bigint>
   addresses           (_: Uint8Array): string[]
   address             (_: Uint8Array): string
   epoch_duration      (_: Uint8Array): { minNumOfBlocks: number, minDuration: number }
+  gas_cost_table      (_: Uint8Array): Record<string, string>
   gov_parameters      (_: Uint8Array): Partial<Gov.Parameters>
   gov_proposal        (_: Uint8Array): Partial<Gov.Proposal>
   gov_votes           (_: Uint8Array): Partial<Gov.Vote>[]
diff --git a/packages/namada/pkg/fadroma_namada.d.ts b/packages/namada/pkg/fadroma_namada.d.ts
index e5b77c8dee..9618c5ed69 100644
--- a/packages/namada/pkg/fadroma_namada.d.ts
+++ b/packages/namada/pkg/fadroma_namada.d.ts
@@ -5,6 +5,11 @@
 export class Decode {
   free(): void;
 /**
+* @param {Uint8Array} source
+* @returns {bigint}
+*/
+  static u64(source: Uint8Array): bigint;
+/**
 * @returns {object}
 */
   static storage_keys(): object;
@@ -16,6 +21,11 @@ export class Decode {
 /**
 * @param {Uint8Array} source
 * @returns {object}
+*/
+  static gas_cost_table(source: Uint8Array): object;
+/**
+* @param {Uint8Array} source
+* @returns {object}
 */
   static tx(source: Uint8Array): object;
 /**
@@ -96,8 +106,10 @@ export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembl
 export interface InitOutput {
   readonly memory: WebAssembly.Memory;
   readonly __wbg_decode_free: (a: number) => void;
+  readonly decode_u64: (a: number, b: number) => void;
   readonly decode_storage_keys: (a: number) => void;
   readonly decode_epoch_duration: (a: number, b: number) => void;
+  readonly decode_gas_cost_table: (a: number, b: number) => void;
   readonly decode_tx: (a: number, b: number) => void;
   readonly decode_address: (a: number, b: number) => void;
   readonly decode_addresses: (a: number, b: number) => void;
diff --git a/packages/namada/pkg/fadroma_namada.js b/packages/namada/pkg/fadroma_namada.js
index 1148da4168..de9ea83bf5 100644
--- a/packages/namada/pkg/fadroma_namada.js
+++ b/packages/namada/pkg/fadroma_namada.js
@@ -173,6 +173,25 @@ export class Decode {
         wasm.__wbg_decode_free(ptr);
     }
     /**
+    * @param {Uint8Array} source
+    * @returns {bigint}
+    */
+    static u64(source) {
+        try {
+            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+            wasm.decode_u64(retptr, addHeapObject(source));
+            var r0 = getInt32Memory0()[retptr / 4 + 0];
+            var r1 = getInt32Memory0()[retptr / 4 + 1];
+            var r2 = getInt32Memory0()[retptr / 4 + 2];
+            if (r2) {
+                throw takeObject(r1);
+            }
+            return takeObject(r0);
+        } finally {
+            wasm.__wbindgen_add_to_stack_pointer(16);
+        }
+    }
+    /**
     * @returns {object}
     */
     static storage_keys() {
@@ -213,6 +232,25 @@ export class Decode {
     * @param {Uint8Array} source
     * @returns {object}
     */
+    static gas_cost_table(source) {
+        try {
+            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+            wasm.decode_gas_cost_table(retptr, addHeapObject(source));
+            var r0 = getInt32Memory0()[retptr / 4 + 0];
+            var r1 = getInt32Memory0()[retptr / 4 + 1];
+            var r2 = getInt32Memory0()[retptr / 4 + 2];
+            if (r2) {
+                throw takeObject(r1);
+            }
+            return takeObject(r0);
+        } finally {
+            wasm.__wbindgen_add_to_stack_pointer(16);
+        }
+    }
+    /**
+    * @param {Uint8Array} source
+    * @returns {object}
+    */
     static tx(source) {
         try {
             const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
diff --git a/packages/namada/pkg/fadroma_namada_bg.wasm.d.ts b/packages/namada/pkg/fadroma_namada_bg.wasm.d.ts
index 53695443fb..d6bcc2b892 100644
--- a/packages/namada/pkg/fadroma_namada_bg.wasm.d.ts
+++ b/packages/namada/pkg/fadroma_namada_bg.wasm.d.ts
@@ -2,8 +2,10 @@
 /* eslint-disable */
 export const memory: WebAssembly.Memory;
 export function __wbg_decode_free(a: number): void;
+export function decode_u64(a: number, b: number): void;
 export function decode_storage_keys(a: number): void;
 export function decode_epoch_duration(a: number, b: number): void;
+export function decode_gas_cost_table(a: number, b: number): void;
 export function decode_tx(a: number, b: number): void;
 export function decode_address(a: number, b: number): void;
 export function decode_addresses(a: number, b: number): void;
diff --git a/packages/namada/src/decode.rs b/packages/namada/src/decode.rs
index 373b1f8acb..a0f66fd18c 100644
--- a/packages/namada/src/decode.rs
+++ b/packages/namada/src/decode.rs
@@ -6,6 +6,13 @@ pub struct Decode;
 #[wasm_bindgen]
 impl Decode {
 
+    #[wasm_bindgen]
+    pub fn u64 (source: Uint8Array) -> Result<BigInt, Error> {
+        let value = u64::try_from_slice(&to_bytes(&source))
+            .map_err(|e|Error::new(&format!("{e}")))?;
+        Ok(BigInt::from(value))
+    }
+
     #[wasm_bindgen]
     pub fn storage_keys () -> Result<Object, Error> {
         Ok(to_object! {
@@ -13,6 +20,8 @@ impl Decode {
                 get_epoch_duration_storage_key().to_string(),
             "maxBlockDuration" =
                 get_max_expected_time_per_block_key().to_string(),
+            "vpAllowlist" =
+                get_tx_allowlist_storage_key().to_string(),
             "maxGasForBlock" =
                 get_max_block_gas_key().to_string(),
             "feeUnshieldingGasLimit" =
@@ -34,6 +43,17 @@ impl Decode {
         })
     }
 
+    #[wasm_bindgen]
+    pub fn gas_cost_table (source: Uint8Array) -> Result<Object, Error> {
+        let data = BTreeMap::<namada::core::address::Address, namada::token::Amount>
+            ::try_from_slice(&to_bytes(&source)).map_err(|e|Error::new(&format!("{e}")))?;
+        let result = Object::new();
+        for (key, val) in data.iter() {
+            Reflect::set(&result, &format!("{key}").into(), &format!("{val}").into())?;
+        }
+        Ok(result)
+    }
+
     #[wasm_bindgen]
     pub fn tx (source: Uint8Array) -> Result<Object, Error> {
         let tx = Tx::try_from_slice(&to_bytes(&source)).map_err(|e|Error::new(&format!("{e}")))?;
diff --git a/packages/namada/src/lib.rs b/packages/namada/src/lib.rs
index dc8b75aa22..b64d4a3bf0 100644
--- a/packages/namada/src/lib.rs
+++ b/packages/namada/src/lib.rs
@@ -67,6 +67,7 @@ pub(crate) use namada::{
             get_max_block_gas_key,
             get_fee_unshielding_gas_limit_key,
             get_gas_cost_key,
+            get_tx_allowlist_storage_key,
         },
     },
     storage::KeySeg,