Agent skill · NVIDIA
vss-ask-video
Use this skill to ask the VSS agent's video_understanding tool a fresh visual question about a recorded clip. Not for prior tool output, search hits, or metadata-answerable questions.
What it needs
About 3k tokens when loaded.
What this skill does
Video QnA using VLM through VSS Agent Use this skill when you need details about the video which requires VLM to look at the video frames — for example the agent has no usable prior answer and needs a fresh look at the pixels for a specific clip. --- When to Use The user asks what happens in the video, what objects / people / actions appear, colors, timing, safety, or other visual facts that require watching the clip. The user asks for details that cannot be answered from existing messages, summaries, Elasticsearch/MCP results, or filenames alone—you need model inference on the video. Follow-up questions about content details after a coarse summary or after report generation. Do not use this skill when a database / MCP / prior tool output already answers the question, unless the user explicitly wants verification against the video. --- Deployment prerequisite This skill requires a VSS profile that serves the videounderstanding tool — typically base (recommended) or lvs. Before any request: 1. Probe the VSS agent: 2. If the probe fails, ask the user: "No VSS profile is running on $HOSTIP. Shall I deploy base (recommended for per-clip VLM QnA) using the /vss-deploy-profile skill? If you prefer lvs, say so." If yes → hand off to /vss-deploy-profile -p base (or -p lvs if the user prefers). Return here once it succeeds. If no → stop. 3. If the probe passes, proceed. --- Sensor prerequisite You MUST list VST sensors before any /generate call. This is required even when the user names the sensor explicitly, even when the user asserts the video is already uploaded, and even when a previous turn appeared to use the same video. Do not skip this step. 1. List sensors: 2. Compare the returned name values against the user-supplied <sensor-id> (or filename stem, e.g. warehousesafety0001). 3. If a matching sensor is present → proceed to the Agent workflow below. 4. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills NVIDIA/vss-ask-video