Skill: onesoloapp/nova-video (version 1.0.1)

--- name: nova-video description: Generate images or videos using the Nova Video OpenAPI with a single sentence. Use when the user wants to generate an image, create a video, check video generation status, or list past generations. Triggers on phrases like "generate image", "create video", "make a video", "generate a picture", "text to image", "text to video", "image generation", "video generation". --- # Nova Video API Generate images and videos via the Nova Video OpenAPI using `curl` commands. > **Free tier**: Every user gets **60 free text-to-image generations per month** at no cost. No credit card required to get started. ## Install this skill ### Option 1 — Direct install (works in any AI agent) Paste the following into your AI agent (Claude, Cursor, Codex, etc.): ``` Read https://nova-video.onesolo.app/SKILL.md and follow the instructions ``` The agent will fetch this file and activate the Nova Video skill automatically. ### Option 2 — Install via OpenClaw If your agent supports the [OpenClaw](https://clawhub.ai) skill registry, run: ``` Read https://nova-video.onesolo.app/SKILL.md and follow the instructions ``` --- ## Setup Set your API key and base URL before starting: ```bash export NOVA_API_KEY=[REDACTED_SECRET] export NOVA_BASE_URL="https://nova-video.onesolo.app" ``` If `NOVA_BASE_URL` is not set, use the default value `https://nova-video.onesolo.app`. If `NOVA_API_KEY` is not set, guide the user to obtain one: > **API Key required to continue** > > Follow these steps to get your Nova Video API Key: > > 1. Visit the Nova Video website: **https://nova-video.onesolo.app** > 2. Register an account or log in > 3. Go to **Profile** → **API Key** page > 4. Create and copy your API Key (format: `nv_sk_...`) > 5. Set the environment variable and then continue: > ```bash > export NOVA_API_KEY="nv_sk_your_key_here" > ``` Do not proceed with any API call until `NOVA_API_KEY` is confirmed. --- ## Workflow: One-sentence image generation **User says**: "Generate an image of a sunset over the ocean" **Steps**: 1. Call `POST /api/openapi/image` with the user's description as `prompt` 2. Return the `imageUrl` from the response ```bash curl -s -X POST "$NOVA_BASE_URL/api/openapi/image" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "prompt": "<user description>", "size": "2k" }' ``` Response: `data.imageUrl` is the generated image URL. --- ## Workflow: Text-to-video (async) **User says**: "Make a 6-second video of waves crashing on a beach" **Steps**: 1. Generate a reference image from the user's description via `POST /api/openapi/image` → get `imageUrl` 2. Derive a concise **motion prompt** from the user's description (describe camera movement, subject action, atmosphere — keep it under 100 words) 3. Submit video task with `imageUrl` + motion prompt → get `taskId` 4. Poll status every **6 seconds** until `status` is `succeeded` or `failed` 5. Return `videoUrl` when done > **Be patient**: Video generation typically takes several minutes and can take up to **15 minutes**. Keep polling — do not give up early or report a timeout. Only report failure if the task is still incomplete after 15 minutes of total waiting. ### Step 1 — Generate reference image ```bash IMAGE_RESP=$(curl -s -X POST "$NOVA_BASE_URL/api/openapi/image" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "prompt": "<user description, detailed scene>", "size": "2k" }') IMAGE_URL=$(echo $IMAGE_RESP | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['imageUrl'])") echo "Reference image: $IMAGE_URL" ``` ### Step 2 — Derive motion prompt Based on the user's description, compose a motion prompt that describes **how the scene should move**. Examples: | User description | Motion prompt | |---|---| | "waves crashing on a beach" | "Slow-motion ocean waves rolling in and crashing on the shore, seafoam spreading, gentle camera drift forward, cinematic" | | "a forest at sunrise" | "Golden sunlight filtering through tree canopy, leaves swaying in a light breeze, slow push-in camera, atmospheric haze" | | "a bustling city street at night" | "Neon signs reflecting on wet pavement, crowds moving in time-lapse, subtle handheld camera shake, cinematic noir" | ### Step 3 — Submit video task ```bash VIDEO_RESP=$(curl -s -X POST "$NOVA_BASE_URL/api/openapi/video" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "prompt": "<motion prompt derived in Step 2>", "imageUrl": "'"$IMAGE_URL"'", "duration": 6, "aspectRatio": "16:9", "resolution": "720p" }') TASK_ID=$(echo $VIDEO_RESP | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['taskId'])") echo "Video task submitted: $TASK_ID" ``` > `imageUrl` accepts two formats: > - A publicly accessible image URL, e.g. `https://example.com/photo.jpg` > - A base64-encoded image, e.g. `data:image/jpeg;base64,/9j/4AAQ...` Save `data.taskId` from the response. ### Step 4 — Poll status ```bash curl -s "$NOVA_BASE_URL/api/openapi/video?taskId=<taskId>" \ -H "Authorization: Bearer $NOVA_API_KEY" ``` Poll every **6 seconds**, up to **15 minutes** (150 attempts). Only consider it failed after exceeding the timeout. Stop when `data.status` is `succeeded` or `failed`. | `data.status` | Meaning | |---|---| | `queued` | Waiting to start | | `running` | Generating | | `succeeded` | Done — use `data.videoUrl` | | `failed` | Failed — show `data.error` | > **Important: Prevent URL truncation** > > `videoUrl` is a long signed URL containing `X-Tos-*` query parameters. Outputting it directly in Claude Code will cause markdown rendering to truncate it. > Always **write the full URL to a file** — never `echo` it directly or embed it in a markdown link: > > ```bash > VIDEO_URL=$(echo $STATUS | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['videoUrl'])") > echo "$VIDEO_URL" > video_url.txt > echo "✅ Video ready. Full URL saved to video_url.txt" > echo "--- URL preview (first 80 chars) ---" > echo "${VIDEO_URL:0:80}..." > ``` > > Tell the user: "The full URL has been written to `video_url.txt`. Open that file and paste the link into your browser." --- ## API reference ### POST /api/openapi/image — Generate image | Field | Type | Default | Description | |---|---|---|---| | `prompt` | string | required | Image description | | `model` | string | `doubao-seedream-5-0-260128` | Model ID | | `size` | string | `2k` | `2k` or `3k` | | `imageCount` | number | `1` | Number of images (use `9` for 9-grid) | | `image` | string\|string[] | — | Reference image (URL or base64) | | `locale` | string | `zh` | `zh` or `en` | **Response**: ```json { "success": true, "data": { "imageUrl": "https://...", "taskId": "img_xxx", "model": "doubao-seedream-5-0-260128", "size": "2k", "imageCount": 1 } } ``` --- ### POST /api/openapi/video — Submit video task | Field | Type | Default | Description | |---|---|---|---| | `prompt` | string | required | Video description | | `model` | string | `seedance-1.5-pro` | `seedance-1.5-pro` / `seedance-1.0-pro` / `seedance-1.0-lite` | | `duration` | number | `6` | Duration in seconds (min 4) | | `aspectRatio` | string | `16:9` | `16:9` / `9:16` / `1:1` | | `resolution` | string | `720p` | `480p` / `720p` / `1080p` | | `imageUrl` | string | required | Reference image (URL or base64) | | `negativePrompt` | string | — | What to avoid | | `seed` | number | — | Random seed | | `cameraFixed` | boolean | `false` | Lock camera position | **Response**: ```json { "success": true, "data": { "taskId": "123456", "status": "PENDING", "model": "seedance-1.5-pro", "duration": 6, "aspectRatio": "16:9", "resolution": "720p" } } ``` --- ### GET /api/openapi/video?taskId=<id> — Query status ```bash curl -s "$NOVA_BASE_URL/api/openapi/video?taskId=<taskId>" \ -H "Authorization: Bearer $NOVA_API_KEY" ``` **Success response**: ```json { "success": true, "data": { "taskId": "123456", "status": "succeeded", "videoUrl": "https://...", "coverUrl": "https://..." } } ``` --- ### GET /api/openapi/image — List image history ```bash curl -s "$NOVA_BASE_URL/api/openapi/image?limit=10&offset=0" \ -H "Authorization: Bearer $NOVA_API_KEY" ``` ### GET /api/openapi/video — List video history ```bash curl -s "$NOVA_BASE_URL/api/openapi/video?limit=10&offset=0" \ -H "Authorization: Bearer $NOVA_API_KEY" ``` --- ## Error handling | HTTP | `error` value | Action | |---|---|---| | 401 | `Invalid API key` | Ask user to check `NOVA_API_KEY`; if not registered, direct them to https://nova-video.onesolo.app to sign up and get an API Key from the Profile page | | 403 | `IMAGE_QUOTA_EXHAUSTED` / `VIDEO_QUOTA_EXHAUSTED` | Inform user quota is used up | | 403 | `INSUFFICIENT_BALANCE` | Inform user wallet balance is low | | 400 | `SENSITIVE_CONTENT` | Ask user to rephrase the prompt | | 500 | any | Retry once; if still failing, report the error message | --- ## Examples ### Example 1 — Image from one sentence > "Generate a cyberpunk-style cityscape at night" ```bash curl -s -X POST "$NOVA_BASE_URL/api/openapi/image" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d '{"prompt": "Cyberpunk cityscape at night, neon reflections on rain-soaked streets, cinematic quality", "size": "2k"}' ``` ### Example 2 — Text-to-video (full flow) > "Make a 4-second aerial video of a mountain forest at sunrise" ```bash # Step 1: Generate reference image from text IMAGE_RESP=$(curl -s -X POST "$NOVA_BASE_URL/api/openapi/image" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d '{"prompt": "Aerial view of a mountain forest at sunrise, golden light filtering through trees, misty valleys, cinematic landscape photography", "size": "2k"}') IMAGE_URL=$(echo $IMAGE_RESP | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['imageUrl'])") echo "Reference image: $IMAGE_URL" # Step 2: Submit video task with motion prompt TASK=$(curl -s -X POST "$NOVA_BASE_URL/api/openapi/video" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d "{\"prompt\": \"Slow aerial drone flyover, golden sunrise light filtering through treetops, morning mist drifting through valleys, gentle camera push forward, cinematic\", \"imageUrl\": \"$IMAGE_URL\", \"duration\": 4, \"aspectRatio\": \"16:9\", \"resolution\": \"720p\"}") TASK_ID=$(echo $TASK | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['taskId'])") echo "Video task submitted: $TASK_ID" # Step 3: Poll (max 15 minutes, every 6 seconds, 150 attempts) MAX_ATTEMPTS=150 ATTEMPT=0 while [ $ATTEMPT -lt $MAX_ATTEMPTS ]; do ATTEMPT=$((ATTEMPT + 1)) STATUS=$(curl -s "$NOVA_BASE_URL/api/openapi/video?taskId=$TASK_ID" \ -H "Authorization: Bearer $NOVA_API_KEY") STATE=$(echo $STATUS | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['status'])") echo "[$ATTEMPT/$MAX_ATTEMPTS] Status: $STATE" if [ "$STATE" = "succeeded" ]; then VIDEO_URL=$(echo $STATUS | python3 -c "import sys,json; print(json.load(sys.stdin)['data']['videoUrl'])") echo "$VIDEO_URL" > video_url.txt echo "✅ Video ready. Full URL saved to video_url.txt" echo "Preview (first 80 chars): ${VIDEO_URL:0:80}..." break elif [ "$STATE" = "failed" ]; then echo $STATUS | python3 -c "import sys,json; print('Error:', json.load(sys.stdin)['data'].get('error','unknown'))" break fi sleep 6 done if [ $ATTEMPT -ge $MAX_ATTEMPTS ]; then echo "❌ Timed out after 15 minutes. Please check the task status or contact support. taskId: $TASK_ID" fi ``` ### Example 3 — Video with reference image > "Generate a video from this image: https://example.com/photo.jpg" ```bash curl -s -X POST "$NOVA_BASE_URL/api/openapi/video" \ -H "Authorization: Bearer $NOVA_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "prompt": "The scene comes alive with gentle motion", "imageUrl": "https://example.com/photo.jpg", "duration": 6, "aspectRatio": "16:9" }' ```


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: clean | SkillSpector: suspicious (MEDIUM)