/brag (latent-spaces/brag): a skill that makes a short launch video from your project

• Picks the Opus 5.5 slim path or the full workflow, and reads --voice

  On Claude Opus 5.5 it follows the bundled slim.md instead, unless you ask for --full or --voice. Narration is enabled only when --voice is in the command.

  Invocation dispatch

• Reads your code to answer a 9-question planning rubric

  Follows references/step-1-inspect.md. The reference says nothing read here should leak secrets, tokens or personal data into a public video.

  Read · Step 1: Inspect the project

• Writes brag-plan.md with scenes, text, timing and SFX cues

  Commits to a creative angle. Scene durations must sum to 15 to 25 seconds.

  Files · Step 2: Plan and storyboard

• Writes a composition brief and builds the video composition

  Loads the Hyperframes skills, writes the composition into <output-dir>/composition/ and gates on npx hyperframes check passing.

  Runs code · Step 3: Hand off to Hyperframes

• Renders brag.mp4, picks a poster frame, writes share-copy.txt

  Runs npx hyperframes check, snapshot, preview and render, uses ffmpeg to extract a poster frame and bake it in as frame 0.

  Runs code · Step 4: Validate, render, deliver

• Seven tones plus freeform direction

  default, polished, yc-parody, chaotic, deadpan, cinematic and app-store.

  Tone presets

• 5 music tracks and 262 sound effect files

  Tracks come with cue files for beat sync. Cue metadata is optional timing guidance.

  Read · Bundled music and sound effects

• Optional script that analyses any audio track for beat cues

  Run through uv with the librosa, numpy, scipy and soundfile packages from pyproject.toml. It writes cue JSON and Markdown files.

  Runs code · analyze_music_cues.py

• A lighter single-file workflow

  Takes a project folder or a website URL. For a URL it downloads media assets to a work folder and may load the page in a headless browser.

  Runs code · slim.md (/brag-slim)

Watch out for

• Your project can end up in a public video

  Claude reads your code and shows real UI and copy on screen. The skill says not to carry secrets, tokens, internal URLs or personal data into the video, but check the final render before you post it.

• Runs npx, ffmpeg and a Python script

  The workflow runs npx hyperframes check, snapshot, preview, render and tts, ffmpeg for the poster frame, and optionally uv run on analyze_music_cues.py, which uses librosa, numpy, scipy and soundfile from pyproject.toml. Approve commands you do not recognise.

• Companion skill media-use can sign in to HeyGen and spend credits

  /brag loads the Hyperframes media-use skill for audio. Its SKILL.md describes a HeyGen sign-in (`npx hyperframes auth login`), a catalog and generation that use HyperFrames credits, and a `heygen` CLI for some recipes. /brag itself bundles music and sound effects. Watch for sign-in or credit prompts during a run.

• Writes a new output folder

  Output goes to brag-output/ or a timestamped folder in your project. Add it to .gitignore if you do not want to commit the video.

• Slim mode downloads site assets

  slim.md can load a URL in a headless browser and download media into a work folder. It says never to run anything it downloads.

• Installs four skills from another repo

  The install box adds hyperframes, hyperframes-cli, hyperframes-registry and media-use from heygen-com/hyperframes. Each is a separate skill with its own commands (npx hyperframes ...).