Vss Setup Video Analytics API

Purpose

Deploy the video-analytics-api REST service standalone with the user's chosen config, data-log bind, and Elasticsearch / Kafka connectivity.

Instructions

Follow the routing tables and step-by-step workflows below. Each section that ends in workflow, quick start, or flow is intended to be executed top-to-bottom. Detailed reference material lives in references/.

Examples

Worked end-to-end examples are kept under evals/ (each *.json manifest contains a runnable scenario). Run a Tier-3 evaluation to replay them:

nv-base validate skills/vss-setup-video-analytics-api --agent-eval

A minimal standalone bring-up looks like:

cd $REPO/deploy/docker
export VSS_APPS_DIR=$(pwd)
export VSS_DATA_DIR=${VSS_DATA_DIR:-/tmp/vss-data}
mkdir -p "$VSS_DATA_DIR/data_log/vss_video_analytics_api"
docker compose -f services/analytics/video-analytics-api/compose.yml up -d vss-video-analytics-api
curl -sf http://localhost:8081/livez

Follow references/deploy-video-analytics-api-service.md for the full workflow (config source, data-log bind, infrastructure dependencies, REST endpoints). For the field-by-field JSON config reference, see references/configuration.md.

Limitations

• Requires the matching VSS profile / microservice to be deployed and reachable from the caller.
• NGC-hosted models and NIMs may be subject to rate-limits, GPU memory requirements, and license restrictions.
• Concurrency, GPU memory, and storage limits depend on the host hardware and the profile's compose file.

Troubleshooting

• Error: REST call returns connection refused. Cause: target microservice not running. Solution: probe /docs or /health; redeploy via vss-deploy-profile or the matching vss-deploy-* skill.
• Error: HTTP 401/403 from NGC pulls. Cause: missing/expired NGC_CLI_API_KEY. Solution: docker login nvcr.io and re-export the key before retrying.
• Error: container OOM or model fails to load. Cause: insufficient GPU memory for the selected profile. Solution: switch to a smaller variant or free GPUs via docker compose down.

VSS Setup Video Analytics API — Standalone

Deploy just the vss-video-analytics-api container (the Node.js REST API from the upstream video-analytics-api repo), not as part of the full warehouse blueprint stack.

The full operational walkthrough — config-source options, data-log volume behavior, infrastructure dependencies, REST API endpoints, deploy + verify, troubleshooting — lives in references/deploy-video-analytics-api-service.md. The field-by-field JSON config reference lives in references/configuration.md. This SKILL.md only handles routing and prerequisites.

When to use

• "Deploy video analytics api" / "run video-analytics-api standalone"
• "I just want to run the REST API, not the full stack"
• "Use my own video-analytics-api config"
• "Point the API at a different Elasticsearch / Kafka"
• "Start the API without Kafka" / "run the API broker-less"
• "Check what REST endpoints are available"

Prerequisites

1. Repo checkout with $VSS_APPS_DIR pointing at <repo>/deploy/docker/. Required by the service compose's volume binds.

2. NGC credentials — $NGC_CLI_API_KEY set so docker can pull the image. See references/ngc-api-key-registry-login.md.

   Secure-handling note for NGC_CLI_API_KEY: this key is a long-lived credential that pulls all NVIDIA private images available to your NGC org. Never commit the key, never paste it into chat, never store it in /tmp. Read it interactively (read -rs NGC_CLI_API_KEY) or load it from your secret manager (Vault, AWS Secrets Manager, sealed-secrets) at deploy time. Write any derived .env files with umask 077 + chmod 600, add them to .gitignore, and rotate the key on a defined cadence and after every host decommission. If it has ever been exposed (host snapshot, shared screen, ticket attachment), rotate immediately.

3. Docker runtime — Docker Engine 28.3.3 with Docker Compose plugin v2.39.1+. Verify with docker --version and docker compose version.

4. Elasticsearch — must be reachable at the URL configured in elasticsearch.node. The server pings ES on startup; if unreachable, it exits (and restart: always brings it back). If you need to bring up ES too, use the infra compose: docker compose -f services/infra/compose.yml up -d elasticsearch.

5. Optional Kafka broker. The API can run without Kafka. If you want a quiet broker-less deployment, use the image-baked config or a custom config with kafka.brokers: []; the service-shipped compose config points at localhost:9092, so Kafka-dependent features (dynamic config, dynamic calibration, RTLS/AMR) will fail until a broker is reachable.

6. $VSS_DATA_DIR for the default compose. The base compose bind-mounts $VSS_DATA_DIR/data_log/vss_video_analytics_api for multipart upload handling and file-backed assets such as calibration images. Set the directory to a writable host path and pre-create it, or remove that mount if image uploads are not needed.

If any required prerequisite fails, surface the gap before going further.

Workflow

Hand the user references/deploy-video-analytics-api-service.md and walk them through its steps in order:

1. Choose a config — image-baked default, service-shipped, or custom.
2. Decide whether a data-log volume is needed for file uploads.
3. Confirm infrastructure dependencies — Elasticsearch (required), Kafka (optional).
4. Deploy + verify with docker compose up and health check.

The compose-file edits, config options, deploy + verify commands, REST API endpoint table, and troubleshooting table all live in that reference — don't duplicate them here.

Endpoint Reference

Use references/deploy-video-analytics-api-service.md for the REST endpoint table and runtime dependency notes.

Kafka-dependent features (runtime, requires broker)

Once the container is up and a Kafka broker is reachable, three additional capabilities are available:

Dynamic config

The API acts as the producer for dynamic config updates. When an operator POSTs to /config, the API publishes an upsert message to the mdx-notification topic with Kafka key behavior-analytics-config. The downstream behavior-analytics container consumes this and ACKs back. The API also handles the bootstrap flow — when behavior-analytics starts, it publishes a request-config message, and the API replies with upsert-all containing the latest verified config from Elasticsearch.

Consumer-side validation, ACK semantics, and the full wire contract are documented in the vss-setup-behavior-analytics dynamic-config reference.

Dynamic calibration

The API produces calibration update notifications on mdx-notification with Kafka key calibration. Supports upsert-all (full snapshot), upsert (per-sensor merge), and delete (per-sensor removal). The downstream behavior-analytics container consumes these and applies them to the live calibration.

Consumer-side validation and per-action policy are documented in the vss-setup-behavior-analytics dynamic-calibration reference.

RTLS / AMR

The API consumes real-time location (mdx-rtls) and AMR (mdx-amr) messages from Kafka and exposes them via REST endpoints.

Routing rules

• If the user wants "the full stack" (UI / agent / perception): hand off to vss-deploy-profile with profile warehouse (or alerts). Don't run this skill in parallel.
• If the user wants to deploy the analytics pipeline (behavior creation, incident detection): hand off to vss-setup-behavior-analytics.
• If the user wants to publish a runtime config / calibration update through the REST API: confirm Kafka is reachable, then use the /config or calibration endpoints and point them at the behavior-analytics dynamic-update references for the consumer wire contract.
• If the user wants to understand the dynamic config / dynamic calibration wire contract from the consumer (behavior-analytics) side: point them at the vss-setup-behavior-analytics dynamic-config and dynamic-calibration references.
• If the user wants to query or interact with the REST API endpoints: the deploy reference endpoint table covers what's available. For the full OpenAPI spec, see src/app/specification/openapi.json in the video-analytics-api repo.

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