diff --git a/subgraph/flake.nix b/subgraph/flake.nix
index 5d60025bf..ac45071e5 100644
--- a/subgraph/flake.nix
+++ b/subgraph/flake.nix
@@ -12,6 +12,7 @@
       let
         pkgs = nixpkgs.legacyPackages.${system};
         jq = "${pkgs.jq}/bin/jq";
+        graphql_client = "${pkgs.graphql-client}/bin/graphql-client";
 
       in rec {
         packages = rec {
@@ -70,6 +71,10 @@
             anvil -m "$(cat ./test-mnemonic)"
           '');
 
+          check = pkgs.writeShellScriptBin "check" (''
+            ${graphql_client}
+          '');
+
           strong-anvil = pkgs.writeShellScriptBin "strong-anvil" (''
             anvil -m "$(cat ./test-mnemonic)" --code-size-limit 36864
           '');