diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index efde891..e64426e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -28,6 +28,8 @@ jobs:
           components: rust-src, rustfmt, clippy
 
       - uses: Swatinem/rust-cache@v2
+        with:
+          cache-bin: "false"
 
       - name: Check format
         run: cargo fmt --all -- --check
diff --git a/Makefile b/Makefile
index f9730a9..6692ef3 100644
--- a/Makefile
+++ b/Makefile
@@ -13,8 +13,8 @@ guests: $(GUEST_TARGETS)
 dummy-guests: $(DUMMY_GUEST_TARGETS)
 
 guest-%:
-	cd guest-examples; METADATA_OUTPUT_DIR=$(realpath output) cargo build --release --bin guest-$* -p guest-$*
 	mkdir -p output
+	cd guest-examples; METADATA_OUTPUT_DIR=$(realpath output) cargo build --release --bin guest-$* -p guest-$*
 	polkatool link --run-only-if-newer -s guest-examples/target/riscv32emac-unknown-none-polkavm/release/guest-$* -o output/guest-$*.polkavm
 
 dummy-guest-%:
diff --git a/guest-examples/Cargo.lock b/guest-examples/Cargo.lock
index 00dbc58..183d3a7 100644
--- a/guest-examples/Cargo.lock
+++ b/guest-examples/Cargo.lock
@@ -101,6 +101,7 @@ dependencies = [
  "parity-scale-codec",
  "polkavm-derive",
  "pvq-program",
+ "scale-info",
 ]
 
 [[package]]
diff --git a/guest-examples/Cargo.toml b/guest-examples/Cargo.toml
index bc31bea..b207de1 100644
--- a/guest-examples/Cargo.toml
+++ b/guest-examples/Cargo.toml
@@ -15,6 +15,10 @@ resolver = "2"
 parity-scale-codec = { version = "3", default-features = false, features = [
     "derive",
 ] }
+scale-info = { version = "2.11.3", default-features = false, features = [
+    "derive",
+    "serde",
+] }
 pvq-program = { path = "../pvq-program", default-features = false }
 pvq-program-metadata-gen = { path = "../pvq-program-metadata-gen" }
 polkavm-derive = { path = "../vendor/polkavm/crates/polkavm-derive" }
diff --git a/guest-examples/swap-info/Cargo.toml b/guest-examples/swap-info/Cargo.toml
index 0e8d03f..070e6b0 100644
--- a/guest-examples/swap-info/Cargo.toml
+++ b/guest-examples/swap-info/Cargo.toml
@@ -5,11 +5,8 @@ edition = "2021"
 publish = false
 
 [dependencies]
+scale-info = { workspace = true }
 parity-scale-codec = { workspace = true }
 polkavm-derive = { workspace = true }
 pvq-program = { workspace = true }
 cfg-if = { workspace = true }
-
-[features]
-asset-hub = []
-acala = []
diff --git a/guest-examples/swap-info/src/main.rs b/guest-examples/swap-info/src/main.rs
index 5e89504..562fa67 100644
--- a/guest-examples/swap-info/src/main.rs
+++ b/guest-examples/swap-info/src/main.rs
@@ -4,21 +4,19 @@
 #[pvq_program::program]
 mod swap_info {
 
-    cfg_if::cfg_if! {
-        if #[cfg(feature = "asset-hub")] {
-            // Actually AssetHub uses xcm::Location as AssetId, but we use opaque Vec<u8> because some compilation issues.
-            type AssetId = alloc::vec::Vec<u8>;
-            type Balance = u128;
-        } else if #[cfg(feature = "acala")] {
-            type AssetId = alloc::vec::Vec<u8>;
-            type Balance = u128;
-        } else {
-            type AssetId = alloc::vec::Vec<u8>;
-            type Balance = u128;
-        }
+    type AssetId = alloc::vec::Vec<u8>;
+    type Balance = u128;
+    #[derive(
+        Debug, Clone, PartialEq, Eq, parity_scale_codec::Encode, parity_scale_codec::Decode, scale_info::TypeInfo,
+    )]
+    pub struct AssetInfo {
+        pub asset_id: AssetId,
+        pub name: alloc::vec::Vec<u8>,
+        pub symbol: alloc::vec::Vec<u8>,
+        pub decimals: u8,
     }
 
-    #[program::extension_fn(extension_id = 13206387959972970661u64, fn_index = 0)]
+    #[program::extension_fn(extension_id = 17401483330909459524u64, fn_index = 0)]
     fn quote_price_tokens_for_exact_tokens(
         asset1: AssetId,
         asset2: AssetId,
@@ -27,7 +25,7 @@ mod swap_info {
     ) -> Option<Balance> {
     }
 
-    #[program::extension_fn(extension_id = 13206387959972970661u64, fn_index = 1)]
+    #[program::extension_fn(extension_id = 17401483330909459524u64, fn_index = 1)]
     fn quote_price_exact_tokens_for_tokens(
         asset1: AssetId,
         asset2: AssetId,
@@ -36,11 +34,14 @@ mod swap_info {
     ) -> Option<Balance> {
     }
 
-    #[program::extension_fn(extension_id = 13206387959972970661u64, fn_index = 2)]
+    #[program::extension_fn(extension_id = 17401483330909459524u64, fn_index = 2)]
     fn get_liquidity_pool(asset1: AssetId, asset2: AssetId) -> Option<(Balance, Balance)> {}
 
-    #[program::extension_fn(extension_id = 13206387959972970661u64, fn_index = 3)]
-    fn list_pools() -> alloc::vec::Vec<(AssetId, AssetId, Balance, Balance)> {}
+    #[program::extension_fn(extension_id = 17401483330909459524u64, fn_index = 3)]
+    fn list_pools() -> alloc::vec::Vec<(AssetId, AssetId)> {}
+
+    #[program::extension_fn(extension_id = 17401483330909459524u64, fn_index = 4)]
+    fn asset_info(asset: AssetId) -> Option<AssetInfo> {}
 
     #[program::entrypoint]
     fn entrypoint_quote_price_exact_tokens_for_tokens(
@@ -66,7 +67,12 @@ mod swap_info {
     }
 
     #[program::entrypoint]
-    fn entrypoint_list_pools() -> alloc::vec::Vec<(AssetId, AssetId, Balance, Balance)> {
+    fn entrypoint_list_pools() -> alloc::vec::Vec<(AssetId, AssetId)> {
         list_pools()
     }
+
+    #[program::entrypoint]
+    fn entrypoint_asset_info(asset: AssetId) -> Option<AssetInfo> {
+        asset_info(asset)
+    }
 }
diff --git a/pvq-extension-swap/src/lib.rs b/pvq-extension-swap/src/lib.rs
index aa4ffb7..02f964e 100644
--- a/pvq-extension-swap/src/lib.rs
+++ b/pvq-extension-swap/src/lib.rs
@@ -11,6 +11,7 @@ pub mod extension {
     pub trait ExtensionSwap {
         type AssetId;
         type Balance;
+        type AssetInfo;
 
         fn quote_price_tokens_for_exact_tokens(
             asset1: Self::AssetId,
@@ -28,7 +29,8 @@ pub mod extension {
 
         fn get_liquidity_pool(asset1: Self::AssetId, asset2: Self::AssetId) -> Option<(Self::Balance, Self::Balance)>;
 
-        #[allow(clippy::type_complexity)]
-        fn list_pools() -> Vec<(Self::AssetId, Self::AssetId, Self::Balance, Self::Balance)>;
+        fn list_pools() -> Vec<(Self::AssetId, Self::AssetId)>;
+
+        fn asset_info(asset: Self::AssetId) -> Option<Self::AssetInfo>;
     }
 }
diff --git a/pvq-test-runner/src/lib.rs b/pvq-test-runner/src/lib.rs
index e9f1b2a..e7ebcf9 100644
--- a/pvq-test-runner/src/lib.rs
+++ b/pvq-test-runner/src/lib.rs
@@ -43,6 +43,7 @@ pub mod extensions {
     impl pvq_extension_swap::extension::ExtensionSwap for ExtensionsImpl {
         type AssetId = Vec<u8>;
         type Balance = u128;
+        type AssetInfo = ();
         fn quote_price_tokens_for_exact_tokens(
             _asset1: Self::AssetId,
             _asset2: Self::AssetId,
@@ -67,9 +68,13 @@ pub mod extensions {
             Some((100, 100))
         }
 
-        fn list_pools() -> Vec<(Self::AssetId, Self::AssetId, Self::Balance, Self::Balance)> {
+        fn list_pools() -> Vec<(Self::AssetId, Self::AssetId)> {
             vec![]
         }
+
+        fn asset_info(_asset: Self::AssetId) -> Option<Self::AssetInfo> {
+            None
+        }
     }
 }