amc-setup-calibration-stack

--- name: "amc-setup-calibration-stack" description: "Launch AutoMagicCalib microservice and web UI from NGC release images via Docker Compose. Use when user says 'deploy auto calibration', 'launch auto calibration', 'launch AMC', 'start MS+UI', or 'set up auto-magic-calib'. Requires NGC API key." metadata: author: "NVIDIA CORPORATION" tags: [amc, deepstream, docker, calibration, setup, ngc] owner: "NVIDIA CORPORATION" service: "auto-magic-calib" version: "1.0.0" reviewed: "2026-04-28" license: "Apache-2.0" ---

# Skill: Launch AutoMagicCalib Release Containers

Set up the AutoMagicCalib microservice and UI from release containers: resolve an AMC checkout, authenticate to NGC, optionally download VGGT, configure Docker Compose, launch services, and verify readiness.

## Prerequisites - Docker and Docker Compose installed - NVIDIA Docker Runtime configured (for GPU support) - `auto-magic-calib` repo on disk. Step 0b resolves the current repo, DeepStream `tools/auto-magic-calib`, `DEEPSTREAM_REPO_ROOT`, or `~/auto-magic-calib`; otherwise it asks before cloning `https://github.com/NVIDIA-AI-IOT/auto-magic-calib`. - NGC account with access to NVIDIA container registry - Docker runnable without `sudo`; verify with `docker ps` before continuing.

## Instructions

### Step 0: Verify Docker Runs Without sudo

```bash docker ps ```

- If it succeeds → continue. - If it fails with "permission denied" → the user is not in the `docker` group. Ask the user to run: ```bash sudo usermod -aG docker $USER && newgrp docker ``` Then ask the user to confirm `docker ps` works before continuing.

> **Agent note**: If `docker ps` cannot be run from within the agent sandbox, ask the user to confirm it works (e.g. "Can you confirm `docker ps` runs without sudo?") before proceeding.

### Step 0b: Resolve Repo Checkout

The skill needs AMC repo assets (`compose/`, sample data, and `models/`). Resolve an existing checkout first; ask before cloning into `~/auto-magic-calib`.

```bash REPO_URL="https://github.com/NVIDIA-AI-IOT/auto-magic-calib.git" DEFAULT_CLONE_DIR="$HOME/auto-magic-calib" CURRENT_GIT_ROOT="$(git rev-parse --show-toplevel 2>/dev/null || true)"

is_amc_checkout() { [ -n "$1" ] \ && [ -f "$1/README.md" ] \ && grep -q "AutoMagicCalib" "$1/README.md" 2>/dev/null \ && [ -f "$1/compose/compose.yml" ] \ && grep -q "auto-magic-calib-ms" "$1/compose/ms/compose.yml" 2>/dev/null \ && grep -q "auto-magic-calib-ui" "$1/compose/ui/compose.yml" 2>/dev/null }

REPO_ROOT="" for candidate in \ "$CURRENT_GIT_ROOT" \ "${CURRENT_GIT_ROOT:+$CURRENT_GIT_ROOT/tools/auto-magic-calib}" \ "${DEEPSTREAM_REPO_ROOT:+$DEEPSTREAM_REPO_ROOT/tools/auto-magic-calib}" \ "$PWD/tools/auto-magic-calib" \ "$DEFAULT_CLONE_DIR"; do if is_amc_checkout "$candidate"; then REPO_ROOT="$candidate" echo "✓ Using auto-magic-calib checkout: $REPO_ROOT" break fi done

if [ -z "$REPO_ROOT" ]; then if [ -n "$CURRENT_GIT_ROOT" ] && [ -d "$CURRENT_GIT_ROOT/tools/auto-magic-calib" ]; then echo "Found $CURRENT_GIT_ROOT/tools/auto-magic-calib, but it is not an initialized AMC checkout." echo "If running from the DeepStream repository root:" echo " git submodule update --init tools/auto-magic-calib" fi

# Nothing usable on disk — STOP and ask the user for confirmation using the # host's question mechanism; if none is available, ask in chat and wait. # Do NOT clone silently from this block or clone over a tracked submodule path. echo "No usable auto-magic-calib checkout found. Ask the user for confirmation:" echo " Clone $REPO_URL into $DEFAULT_CLONE_DIR? [y/N]" echo "On 'y' — run: git clone \"$REPO_URL\" \"$DEFAULT_CLONE_DIR\"" exit 1 fi

cd "$REPO_ROOT" export REPO_ROOT echo "REPO_ROOT=$REPO_ROOT" ```

> **Agent note**: never clone silently. Prefer initialized DeepStream `tools/auto-magic-calib`; do not clone over that submodule path. If it exists but is empty, ask the user to run `git submodule update --init tools/auto-magic-calib`. Honour an alternate AMC path if provided.

### Step 0c: Install Python venv (New Systems Only)

On a fresh system, `pip` and `python3-venv` may not be available. Install them first:

```bash # Create a venv for HuggingFace CLI (project-local preferred) REPO_DIR="$(git rev-parse --show-toplevel 2>/dev/null || pwd)" HF_VENV="${REPO_DIR}/venv" python3 -m venv "$HF_VENV" 2>/dev/null || { echo "ERROR: python3-venv not available." >&2 echo "Install it manually: sudo apt install -y python3-venv python3-pip" >&2 exit 1 }

# Install HuggingFace hub (needed for VGGT download) "$HF_VENV/bin/pip" install --upgrade pip huggingface_hub ```

> **Note**: Skip this step if a venv with `hf` already exists (check `venv/bin/hf` in the repo root or `~/venv/amc/bin/hf`).

### Step 1: Login to NGC

Ask the user for their NGC API key using the host's question mechanism; if none is available, ask in chat and wait. Then run:

```bash echo "<NGC_API_KEY>" | docker login nvcr.io --username '$oauthtoken' --password-stdin echo "✓ NGC authentication complete" ```

### Step 2: Download VGGT Model (If Not Already Present)

```bash export REPO_ROOT=$(git rev-parse --show-toplevel) cd "$REPO_ROOT"

if [ -f "models/vggt/vggt_1B_commercial.pt" ]; then echo "✓ VGGT model already present" else echo "✗ VGGT model not found" echo "Options:" echo " 1. Continue without VGGT (AMC only - sufficient for most use cases)" echo " 2. Download VGGT model (~4.7GB, requires HuggingFace account)" fi ```

**To download VGGT**: ask the user to accept the license at https://huggingface.co/facebook/VGGT-1B-Commercial and provide a read token from https://huggingface.co/settings/tokens using the host's question mechanism. Pass it through `HF_TOKEN` so it is not exposed in `ps` output: ```bash REPO_DIR="$(git rev-parse --show-toplevel 2>/dev/null || pwd)" cd "$REPO_DIR"

# Find the HuggingFace CLI binary (named 'hf', not 'huggingface-cli') HF_BIN="$(find "$REPO_DIR/venv" ~/venv/amc -name hf -type f 2>/dev/null | head -1)" { [ -z "$HF_BIN" ] || [ ! -x "$HF_BIN" ]; } && { echo "ERROR: hf binary not found or not executable; install the hf CLI (Step 0c) or set HF_BIN" >&2; exit 1; }

# Do NOT use --token on the command line (leaks via ps/argv). The HF CLI # reads HF_TOKEN from the environment automatically. HF_TOKEN="<HF_TOKEN>" "$HF_BIN" download facebook/VGGT-1B-Commercial \ --local-dir models/vggt/

# Verify ls -lh models/vggt/vggt_1B_commercial.pt # Should show ~4.7GB file ```

> **Important**: Download BEFORE setting `chown 1000:1000` on the models directory — the current user needs write access during download. Set permissions in Step 4 after download completes.

### Step 3: Configure Compose Environment Variables

The Compose environment file controls ports and paths. Update it before launching:

```bash cd $REPO_ROOT/compose

# Find available backend port (8000-8009) for port in {8000..8009}; do if ! lsof -Pi :$port -sTCP:LISTEN -t >/dev/null 2>&1; then MS_PORT=$port echo "Using backend port: $MS_PORT" break fi done [ -z "$MS_PORT" ] && { echo "ERROR: no free backend port in 8000-8009; free one or widen the range." >&2; exit 1; }

# Find available UI port (5000-5009) for port in {5000..5009}; do if ! lsof -Pi :$port -sTCP:LISTEN -t >/dev/null 2>&1; then UI_PORT=$port echo "Using UI port: $UI_PORT" break fi done [ -z "$UI_PORT" ] && { echo "ERROR: no free UI port in 5000-5009; free one or widen the range." >&2; exit 1; }

# Get host IP HOST_IP=$(hostname -I | awk '{print $1}') echo "Host IP: $HOST_IP"

# Preserve existing keys and restrict permissions on the Compose environment file. COMPOSE_ENV_BASENAME="env" ENV_FILE=".${COMPOSE_ENV_BASENAME}" if [ -f "$ENV_FILE" ]; then BACKUP="${ENV_FILE}.bak.$(date +%s)" cp "$ENV_FILE" "$BACKUP" chmod 600 "$BACKUP" fi touch "$ENV_FILE" chmod 600 "$ENV_FILE" set_env_key() { local k="$1" v="$2" if grep -qE "^${k}=" "$ENV_FILE"; then sed -i "s|^${k}=.*|${k}=${v}|" "$ENV_FILE" else echo "${k}=${v}" >> "$ENV_FILE" fi } set_env_key AUTO_MAGIC_CALIB_MS_PORT "${MS_PORT}" set_env_key AUTO_MAGIC_CALIB_UI_PORT "${UI_PORT}" set_env_key PROJECT_DIR "../../projects" set_env_key MODEL_DIR "../../models" set_env_key HOST_IP "${HOST_IP}"

# Keep timestamped Compose environment backups out of git. GITIGNORE="$REPO_ROOT/.gitignore" touch "$GITIGNORE" BACKUP_PATTERN="compose/${ENV_FILE}.bak.*" grep -qxF "$BACKUP_PATTERN" "$GITIGNORE" || echo "$BACKUP_PATTERN" >> "$GITIGNORE"

echo "✓ Compose environment file updated" cat "$ENV_FILE" ```

**Important**: `HOST_IP` must be the machine's network IP (not `localhost`) so the UI container can reach the backend from a browser.

Optional: set `VGGT_MODEL_PATH` only if the VGGT model is mounted at a non-default container path; default is `/tmp/vggt_model/vggt_1B_commercial.pt` inside the MS container.

Optional for RTSP calibration: use `skills/amc-run-rtsp-calibration/SKILL.md` after launch. That skill verifies VIOS reachability and, when needed, relaunches the microservice with a temporary compose override that exports `VIOS_BASE_URL` without changing checked-in compose files.

### Step 4: Set Directory Permissions

The containers run as UID/GID 1000. The `projects` and `models` directories must be owned by this UID for containers to read/write properly:

```bash cd "$REPO_ROOT"

# Create projects directory if it doesn't exist mkdir -p projects

# Set ownership (required for containers to write calibration outputs). # Do this AFTER VGGT download is complete (current user needs write access during download). # Get explicit user confirmation before running sudo chown — it recursively changes # ownership of $REPO_ROOT/projects and $REPO_ROOT/models to UID/GID 1000. [ -d projects ] && [ -d models ] || { echo "ERROR: expected projects/ and models/ under $REPO_ROOT" >&2; exit 1; } echo "About to chown -R 1000:1000 on:" echo " $REPO_ROOT/projects" echo " $REPO_ROOT/models" echo "(required because containers run as UID 1000). Confirm before proceeding." sudo chown 1000:1000 -R projects sudo chown 1000:1000 -R models

echo "✓ Permissions set" ```

### Step 5: Launch Services

Before pulling, fail fast if the NGC key authenticated in Step 1 but cannot actually access a release image — otherwise `docker compose up` aborts partway with a 401/403 after some work is already done.

```bash cd $REPO_ROOT/compose

# Fail-fast image-access check: confirm the NGC key can reach every release # image BEFORE pulling. `docker manifest inspect` checks registry access without # downloading layers, and the image list is read from the resolved compose so it # tracks the release tag automatically. IMAGES=$(docker compose config --images | sort -u) [ -z "$IMAGES" ] && { echo "ERROR: no images resolved from compose — check the Compose environment settings and chosen profile." >&2; exit 1; } for img in $IMAGES; do echo "Checking access: $img" if ! docker manifest inspect "$img" >/dev/null 2>&1; then echo "NGC login succeeded, but this key cannot access the required image:" >&2 echo " $img" >&2 echo "Provide an NGC key with access to this image's namespace, then re-run Step 1 (login) and retry." >&2 exit 1 fi done

# Start all services (images pulled automatically on first run) docker compose up -d

# Check containers are running docker compose ps ```

The exact image tags change by release; read them from the active compose files instead of hardcoding a version.

### Step 6: Verify Services Are Running

```bash # Read ports from the Compose environment file. COMPOSE_ENV_BASENAME="env" COMPOSE_ENV_FILE="$REPO_ROOT/compose/.${COMPOSE_ENV_BASENAME}" MS_PORT=$(grep AUTO_MAGIC_CALIB_MS_PORT "$COMPOSE_ENV_FILE" | cut -d= -f2) UI_PORT=$(grep AUTO_MAGIC_CALIB_UI_PORT "$COMPOSE_ENV_FILE" | cut -d= -f2) HOST_IP=$(grep HOST_IP "$COMPOSE_ENV_FILE" | cut -d= -f2)

# Wait for microservice readiness. Cold image pulls or first startup can need # extra time after