diff --git a/data-setup/README.md b/data-setup/README.md
index 4a77089..01560c8 100644
--- a/data-setup/README.md
+++ b/data-setup/README.md
@@ -49,13 +49,27 @@ _local/reports/           # comparison reports
 
 ## Commands
 
-Check setup without downloading or rebuilding:
+Run the setup script with one explicit option:
+
+```bash
+bash data-setup/run_data_setup.sh <option>
+```
+
+Available options:
+
+- `--dry-run` — check setup scripts only.
+- `--download-only` — download script-accessible sources.
+- `--build-test` — rebuild model-ready inputs from existing local sources.
+- `--compare` — compare regenerated inputs with committed `data/` inputs.
+- `--full-test` — download, rebuild, and compare locally.
+
+Minimal check:
 
 ```bash
 bash data-setup/run_data_setup.sh --dry-run
 ```
 
-Download all script-accessible sources. Manifesto requires an API key; V-Party requires an email for the provider form:
+Download sources:
 
 ```bash
 bash data-setup/run_data_setup.sh --download-only
@@ -82,19 +96,19 @@ Morgan is not a public provider download. The local OCR/transcription file can b
 _local/raw/morgan/morgan_positions_raw.csv
 ```
 
-Rebuild model-ready inputs after placing all required local files:
+Rebuild model-ready inputs:
 
 ```bash
 bash data-setup/run_data_setup.sh --build-test
 ```
 
-Compare regenerated inputs with the committed inputs:
+Compare regenerated inputs:
 
 ```bash
 bash data-setup/run_data_setup.sh --compare
 ```
 
-Run the full local test sequence — source downloads, raw-file preflight, local rebuild, and comparison — after setting required environment variables and placing Morgan locally:
+Full local source test:
 
 ```bash
 bash data-setup/run_data_setup.sh --full-test
diff --git a/data-setup/run_data_setup.sh b/data-setup/run_data_setup.sh
index a297c40..f2eca57 100644
--- a/data-setup/run_data_setup.sh
+++ b/data-setup/run_data_setup.sh
@@ -1,14 +1,32 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-MODE="${1:---dry-run}"
+usage() {
+  cat >&2 <<'EOF'
+Usage: bash data-setup/run_data_setup.sh <option>
+
+Options:
+  --dry-run        check setup scripts only
+  --download-only  download source files where scriptable
+  --build-test     rebuild inputs from existing local sources
+  --compare        compare regenerated inputs with committed data/
+  --full-test      download, rebuild, and compare locally
+EOF
+}
+
+if [ "$#" -ne 1 ]; then
+  usage
+  exit 1
+fi
+
+MODE="$1"
 repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
 cd "$repo_root"
 
 case "$MODE" in
   --dry-run|--download-only|--build-test|--compare|--full-test) ;;
   *)
-    echo "Usage: $0 [--dry-run|--download-only|--build-test|--compare|--full-test]" >&2
+    usage
     exit 1
     ;;
 esac
diff --git a/docs/RAW_DATA_SOURCES.md b/docs/RAW_DATA_SOURCES.md
index d6ab534..0d797b7 100644
--- a/docs/RAW_DATA_SOURCES.md
+++ b/docs/RAW_DATA_SOURCES.md
@@ -69,8 +69,7 @@ From the repository root, run:
 bash data-setup/run_data_setup.sh --dry-run
 ```
 
-This parses the setup scripts without downloading or rebuilding. To check local
-raw file placement and print byte sizes/checksums, run:
+To check local raw file placement and print byte sizes/checksums, run:
 
 ```bash
 bash data-setup/check_raw_data.sh