diff --git a/.github/workflows/_publish-registry.yml b/.github/workflows/_publish-registry.yml
index 7f685c7ed..071e0ebf5 100644
--- a/.github/workflows/_publish-registry.yml
+++ b/.github/workflows/_publish-registry.yml
@@ -97,6 +97,9 @@ jobs:
         env:
           WORKER: ${{ inputs.worker }}
           BIN: ${{ inputs.bin }}
+          DEPLOY: ${{ inputs.deploy }}
+          TAG: ${{ inputs.tag }}
+          REPO_URL: ${{ format('https://github.com/{0}', github.repository) }}
         run: |
           set -euo pipefail
           mode=$(python3 - <<'PY'
@@ -104,6 +107,7 @@ jobs:
           import yaml
 
           worker = os.environ["WORKER"]
+          deploy = os.environ.get("DEPLOY", "")
           manifest_path = f"{worker}/iii.worker.yaml"
           manifest = yaml.safe_load(open(manifest_path, encoding="utf-8").read()) or {}
           scripts = manifest.get("scripts") or {}
@@ -112,7 +116,9 @@ jobs:
           has_runtime = bool(runtime.get("kind") or runtime.get("language"))
           language = str(manifest.get("language") or "").strip().lower()
 
-          if has_scripts_start or has_runtime:
+          if deploy == "binary":
+              print("release-binary")
+          elif has_scripts_start or has_runtime:
               print("iii-add")
           elif language == "rust":
               print("cargo-run")
@@ -125,6 +131,29 @@ jobs:
             iii-add)
               iii worker add "./$WORKER" --force --reset-config --wait
               ;;
+            release-binary)
+              bin_name="${BIN:-$WORKER}"
+              asset_url="$REPO_URL/releases/download/$TAG/${bin_name}-x86_64-unknown-linux-gnu.tar.gz"
+              echo "Fetching prebuilt worker: $asset_url"
+              curl -fsSL "$asset_url" -o /tmp/worker-bin.tar.gz
+              tar -xzf /tmp/worker-bin.tar.gz -C /tmp/
+              bin_path="/tmp/${bin_name}"
+              chmod +x "$bin_path"
+
+              worker_log="worker-$WORKER.log"
+              pushd "$WORKER" >/dev/null
+              echo "Starting local worker with: (cd $WORKER && $bin_path)"
+              "$bin_path" > "../$worker_log" 2>&1 &
+              echo "$!" > ../worker.pid
+              popd >/dev/null
+
+              sleep 2
+              if ! kill -0 "$(cat worker.pid)" 2>/dev/null; then
+                echo "::error::$WORKER exited before interface collection"
+                cat "$worker_log" || true
+                exit 1
+              fi
+              ;;
             cargo-run)
               if [[ ! -f "$WORKER/Cargo.toml" ]]; then
                 echo "::error::$WORKER is a Rust worker but $WORKER/Cargo.toml was not found"