Miguel ÁngelandClaude Opus 4.8
814c96cefa
The `media-use` SKILL.md `description:` was an unquoted YAML scalar containing a mid-value `: ` (`...the full cascade: project cache...`). YAML 1.2 reads that as a nested mapping and the parse fails with "Nested mappings are not allowed in compact mappings". `skills add` aborts the entire install when any one skill fails to parse, so this single file blocked installing all 19 skills for everyone following the README's `npx skills add heygen-com/hyperframes`. - Replace the offending `: ` with ` — ` (keeps the plain-scalar style used by the other 18 skills; the description already uses `—` as a separator). - Add a frontmatter guard to scripts/lint-skills.ts that flags unquoted top-level scalars containing `: ` — the exact ambiguity — so this can't regress. No new dependency. Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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name, description
| name | description |
|---|---|
| media-use | Agent Media OS — resolve any media need (BGM, SFX, image, icon) into a frozen local file + ledger record. One verb (`resolve`) handles the full cascade — project cache, global cache, HeyGen catalog search, freeze, register. Keeps search noise on disk, hands the agent a path. Use when a composition needs background music, sound effects, images, or icons. |
media-use
Resolve media needs into frozen local files. One verb, four types, zero context noise.
When to use
Call resolve whenever a composition needs media — background music, sound effects, images, or icons. media-use searches the HeyGen catalog, downloads the best match, freezes it locally, and registers it in a manifest. The agent gets back one line; all search noise stays on disk.
Resolve
node <SKILL_DIR>/scripts/resolve.mjs --type <type> --intent "<description>" --project <dir>
Returns one line: resolved <id> → <path> (<type>, <metadata>)
Types
| Type | What it finds | Provider |
|---|---|---|
bgm |
Background music | HeyGen audio catalog (10k+ tracks) |
sfx |
Sound effects | Bundled 19-file library + HeyGen catalog |
image |
Photos, backgrounds | HeyGen asset search (75k+ vectors) |
icon |
Icons, logos | HeyGen asset search (type=icon) |
Examples
# Background music
node <SKILL_DIR>/scripts/resolve.mjs --type bgm --intent "upbeat tech launch" --project .
# → resolved bgm_001 → .media/audio/bgm/bgm_001.mp3 (bgm, 25s)
# Sound effect
node <SKILL_DIR>/scripts/resolve.mjs --type sfx --intent "whoosh" --project .
# → resolved sfx_001 → .media/audio/sfx/sfx_001.mp3 (sfx, 0.57s)
# Image
node <SKILL_DIR>/scripts/resolve.mjs --type image --intent "gradient tech background" --project .
# → resolved image_001 → .media/images/image_001.jpg (image)
# Icon
node <SKILL_DIR>/scripts/resolve.mjs --type icon --intent "rocket" --project .
# → resolved icon_001 → .media/images/icon_001.png (icon, transparent)
Flags
| Flag | Description |
|---|---|
--type, -t |
Media type: bgm, sfx, image, icon |
--intent, -i |
What you need (natural language) |
--entity, -e |
Entity name for cache matching (optional) |
--project, -p |
Project directory (default: .) |
--adopt |
Bulk-import existing assets/ into manifest |
--json |
Output JSON instead of one-line result |
How it works
- Check project
.media/manifest.jsonlfor exact-prompt match - Scan existing
assets/directory for unregistered files matching the need - Check global cache
~/.media/for reusable asset - Search via provider (HeyGen audio catalog, HeyGen asset search)
- Freeze file to
.media/<type>/, register in manifest, regenerateindex.md
The agent gets back one line. Candidates, scores, provenance stay on disk.
Adopt existing projects
Most HyperFrames projects already have assets in assets/. media-use adopts them:
node <SKILL_DIR>/scripts/resolve.mjs --adopt --project .
# → adopted 9 assets from assets/
# bgm_001 → assets/bgm/mango-fizz.mp3 (bgm, 146.6s)
# image_001 → assets/images/avatar.jpg (image, 400×400)
ffprobe extracts real duration and dimensions. During resolve, unregistered files in assets/ matching the intent are adopted on the fly.
Reading the inventory
After resolve or adopt, read .media/index.md for the full inventory:
# .media · 4 assets
id type dur dims path description
bgm_001 bgm 25s — .media/audio/bgm/bgm_001.mp3 upbeat tech launch
sfx_001 sfx 0.6s — .media/audio/sfx/sfx_001.mp3 whoosh
image_001 image — 1920×1080 .media/images/image_001.jpg gradient tech background
icon_001 icon — 200×200 .media/images/icon_001.png rocket
Cross-project reuse
Assets are cached automatically on resolve. Subsequent resolves for the same prompt hit the global cache at ~/.media/ — no re-download, no provider call. Promote an asset explicitly with organize --promote <id> to make it reusable across all projects.
Files
.media/manifest.jsonl— machine SSOT, one JSON record per line.media/index.md— agent-readable table (id, type, dur, dims, path, description)~/.media/— global cross-project reuse cache (content-addressed, SHA-256)
CLI tools used
| Tool | Purpose | Required? |
|---|---|---|
ffprobe |
Probe duration, dimensions, codec on adopt | Yes |
heygen |
Audio catalog, asset search | For providers |
Install the heygen CLI (single static binary, no runtime) and authenticate:
curl -fsSL https://static.heygen.ai/cli/install.sh | bash # installs latest to ~/.local/bin
heygen update # if already installed: needs >= v0.1.6
export HEYGEN_API_KEY=<your-key> # or: heygen auth login --key <key>
Requires heygen >= v0.1.6 — the providers tag requests with the allowlisted --headers 'X-HeyGen-Client-Source: media-use' flag, added in v0.1.6. asset search is a pre-launch command hidden from heygen --help, but it runs. Without a heygen on PATH (or a valid key) the providers print a one-line diagnostic to stderr and resolve falls through to "no provider could resolve".