diff --git a/sh/aws/claude.sh b/sh/aws/claude.sh
index 0d80ca92..9c1caf5c 100755
--- a/sh/aws/claude.sh
+++ b/sh/aws/claude.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" claude "$@"
diff --git a/sh/aws/codex.sh b/sh/aws/codex.sh
index ab9ece42..3fa2a25d 100755
--- a/sh/aws/codex.sh
+++ b/sh/aws/codex.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" codex "$@"
diff --git a/sh/aws/hermes.sh b/sh/aws/hermes.sh
index 249d6411..33dd3f20 100644
--- a/sh/aws/hermes.sh
+++ b/sh/aws/hermes.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" hermes "$@"
diff --git a/sh/aws/kilocode.sh b/sh/aws/kilocode.sh
index 0c5ac4a5..3c00415c 100755
--- a/sh/aws/kilocode.sh
+++ b/sh/aws/kilocode.sh
@@ -29,5 +29,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" kilocode "$@"
diff --git a/sh/aws/openclaw.sh b/sh/aws/openclaw.sh
index ef7f88ed..705b4a11 100755
--- a/sh/aws/openclaw.sh
+++ b/sh/aws/openclaw.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" openclaw "$@"
diff --git a/sh/aws/opencode.sh b/sh/aws/opencode.sh
index fd3c0952..35e84ac1 100755
--- a/sh/aws/opencode.sh
+++ b/sh/aws/opencode.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" opencode "$@"
diff --git a/sh/aws/zeroclaw.sh b/sh/aws/zeroclaw.sh
index db4779cd..965cbb3e 100644
--- a/sh/aws/zeroclaw.sh
+++ b/sh/aws/zeroclaw.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 AWS_JS=$(mktemp)
 trap 'rm -f "$AWS_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/aws-latest/aws.js" -o "$AWS_JS" \
+    || { printf '\033[0;31mFailed to download aws.js\033[0m\n' >&2; exit 1; }
 exec bun run "$AWS_JS" zeroclaw "$@"
diff --git a/sh/hetzner/claude.sh b/sh/hetzner/claude.sh
index 9e9ca914..3c18181d 100755
--- a/sh/hetzner/claude.sh
+++ b/sh/hetzner/claude.sh
@@ -23,5 +23,6 @@ fi
 
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" claude "$@"
diff --git a/sh/hetzner/codex.sh b/sh/hetzner/codex.sh
index e2872ee7..3bd743ec 100755
--- a/sh/hetzner/codex.sh
+++ b/sh/hetzner/codex.sh
@@ -23,5 +23,6 @@ fi
 
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" codex "$@"
diff --git a/sh/hetzner/hermes.sh b/sh/hetzner/hermes.sh
index 914d8851..2f7a7efb 100755
--- a/sh/hetzner/hermes.sh
+++ b/sh/hetzner/hermes.sh
@@ -28,5 +28,6 @@ fi
 # Remote — download and run compiled TypeScript bundle
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" hermes "$@"
diff --git a/sh/hetzner/kilocode.sh b/sh/hetzner/kilocode.sh
index 2dbe66b9..99470fd8 100644
--- a/sh/hetzner/kilocode.sh
+++ b/sh/hetzner/kilocode.sh
@@ -23,5 +23,6 @@ fi
 
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" kilocode "$@"
diff --git a/sh/hetzner/openclaw.sh b/sh/hetzner/openclaw.sh
index a030e3f9..3e8ddf18 100755
--- a/sh/hetzner/openclaw.sh
+++ b/sh/hetzner/openclaw.sh
@@ -23,5 +23,6 @@ fi
 
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" openclaw "$@"
diff --git a/sh/hetzner/opencode.sh b/sh/hetzner/opencode.sh
index 1dc642fe..c4c6a0d7 100755
--- a/sh/hetzner/opencode.sh
+++ b/sh/hetzner/opencode.sh
@@ -23,5 +23,6 @@ fi
 
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" opencode "$@"
diff --git a/sh/hetzner/zeroclaw.sh b/sh/hetzner/zeroclaw.sh
index 71146445..818c50e6 100644
--- a/sh/hetzner/zeroclaw.sh
+++ b/sh/hetzner/zeroclaw.sh
@@ -23,5 +23,6 @@ fi
 
 HETZNER_JS=$(mktemp)
 trap 'rm -f "$HETZNER_JS"' EXIT
-curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS"
+curl -fsSL "https://github.com/OpenRouterTeam/spawn/releases/download/hetzner-latest/hetzner.js" -o "$HETZNER_JS" \
+    || { printf '\033[0;31mFailed to download hetzner.js\033[0m\n' >&2; exit 1; }
 exec bun run "$HETZNER_JS" zeroclaw "$@"