diff --git a/src/endpoints/data.gleam b/src/endpoints/data.gleam
index 75ca651..d9083ce 100644
--- a/src/endpoints/data.gleam
+++ b/src/endpoints/data.gleam
@@ -1,25 +1,27 @@
 import gleam/dict.{type Dict}
 import gleam/dynamic/decode.{type Decoder}
+import models/trade_symbol.{type TradeSymbol}
 import utils/api.{type ApiResponse}
-import utils/auth.{type AgentToken, AgentAuth}
+import utils/auth.{NoAuth}
 
 pub type GetSupplyChainResponse {
-  GetSupplyChainResponse(export_to_import_map: Dict(String, String))
+  GetSupplyChainResponse(
+    export_to_import_map: Dict(TradeSymbol, List(TradeSymbol)),
+  )
 }
 
 fn get_supply_chain_response_decoder() -> Decoder(GetSupplyChainResponse) {
   use export_to_import_map <- decode.field(
     "exportToImportMap",
-    decode.dict(decode.string, decode.string),
+    decode.dict(trade_symbol.decoder(), decode.list(trade_symbol.decoder())),
   )
   decode.success(GetSupplyChainResponse(export_to_import_map:))
 }
 
-pub fn get_supply_chain(
-  token: AgentToken,
-) -> ApiResponse(GetSupplyChainResponse) {
-  let request = api.get(AgentAuth(token), "/market/supply-chain")
+pub fn get_supply_chain() -> ApiResponse(GetSupplyChainResponse) {
+  let request = api.get(NoAuth, "/market/supply-chain")
   use response <- api.try_send(request)
+  echo response.body
   case response.status {
     200 ->
       api.parse_data_response(response, get_supply_chain_response_decoder())
diff --git a/test/spacetraders_sdk_test.gleam b/test/spacetraders_sdk_test.gleam
index 175f7c1..f77d212 100644
--- a/test/spacetraders_sdk_test.gleam
+++ b/test/spacetraders_sdk_test.gleam
@@ -1,4 +1,5 @@
 import endpoints/accounts
+import endpoints/data
 import endpoints/global
 import env
 import gleeunit
@@ -18,3 +19,7 @@ pub fn error_codes_test() {
 pub fn account_test() {
   let assert Ok(_) = accounts.get_account(env.load_dotenv_unsafe().agent_token)
 }
+
+pub fn supply_chain_test() {
+  let assert Ok(_) = data.get_supply_chain()
+}