diff --git a/README.md b/README.md
index ef93f9b55..4e26818b8 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,12 @@ To get out-of-the-box support, use the [GraalVM Gradle Plugin](https://graalvm.g
 
 ### 🔎 Check if Your Library or Framework Is Supported
 
-To see whether your library or framework is supported, visit [this page](https://www.graalvm.org/native-image/libraries-and-frameworks/). It lists libraries and frameworks that are tested and ready for GraalVM Native Image.  
+To quickly check whether reachability metadata exists for a specific library, you can run the following command directly from your terminal (works on **Linux** and **macOS**, or on **Windows** with Git Bash / WSL):
+```bash
+curl -sSL https://raw.githubusercontent.com/oracle/graalvm-reachability-metadata/master/check-library-support.sh | bash -s "<groupId>:<artifactId>:<version>"
+```
+
+For a broader overview of supported libraries and frameworks, you can visit [this page](https://www.graalvm.org/native-image/libraries-and-frameworks/). It lists libraries and frameworks that are tested and ready for GraalVM Native Image.  
 
 If you’d like yours to appear there as well, open a pull request updating [this JSON file](https://github.com/oracle/graalvm-reachability-metadata/blob/master/library-and-framework-list.json).  
 Before submitting a pull request, please read [this guide](docs/CONTRIBUTING.md#tested-libraries-and-frameworks).
diff --git a/check-library-support.sh b/check-library-support.sh
new file mode 100755
index 000000000..f28a72fbb
--- /dev/null
+++ b/check-library-support.sh
@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+# Copyright and related rights waived via CC0
+#
+# You should have received a copy of the CC0 legalcode along with this
+# work. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+set -euo pipefail
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <groupId>:<artifactId>:<version>"
+    exit 1
+fi
+
+GAV="$1"
+
+if ! [[ "$GAV" =~ ^[^:]+:[^:]+:[^:]+$ ]]; then
+    echo "Invalid library format: '$GAV'"
+    echo "Expected format: <groupId>:<artifactId>:<version>"
+    exit 1
+fi
+
+IFS=':' read -r GROUP ARTIFACT VERSION <<< "$GAV"
+
+REMOTE_BASE_URL="https://raw.githubusercontent.com/oracle/graalvm-reachability-metadata/master/metadata"
+REMOTE_INDEX_URL="$REMOTE_BASE_URL/$GROUP/$ARTIFACT/index.json"
+
+INDEX_CONTENT=$(curl -fsSL "$REMOTE_INDEX_URL" 2>/dev/null || true)
+
+if [[ -z "$INDEX_CONTENT" ]]; then
+    echo "Library $GAV is NOT supported by the GraalVM Reachability Metadata repository."
+    exit 1
+fi
+
+FOUND=$(
+    awk -v ver="$VERSION" '
+      /"tested-versions"[[:space:]]*:/ {inside=1; next}
+      inside && /\]/ {inside=0}
+      inside && $0 ~ "\"" ver "\"" {print "yes"}
+    ' <<< "$INDEX_CONTENT"
+)
+
+if [ "$FOUND" = "yes" ]; then
+    echo "Library $GAV is supported by the GraalVM Reachability Metadata repository."
+else
+    echo "Library $GAV is NOT supported by the GraalVM Reachability Metadata repository."
+fi