Video To Sound

What it does

When your agent uses it

• Tasks that involve Music and audio generation

Example prompts

• “/video-to-sound”

Requirements

• Python 3
• Node.js
• A credential in SONILO_API_KEY
• Compatibility (from SKILL.md): Requires Sonilo through either transport — the MCP server connected, or the `sonilo` CLI installed and signed in — plus credentials: a `sonilo login` sign-in, the hosted OAuth plugin, or SONILO_API_KEY. See the setup-api-key skill.
• Pre-approved tools (allowed-tools): Bash, Read, Write, mcp__sonilo__*

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

1. 1Sonilo MCP tools visible in this session (video_to_sound and friends) — use them. This is the preferred path: it needs no shell, and it is…
2. 2No usable Sonilo MCP tools, but sonilo account exits 0 — use the CLI commands below. Same API, same account, same credential file. Probe…
3. 3Neither — stop and run the setup-api-key skill. Do not call api.sonilo.com with curl to work around it; both transports handle uploads…

What it can do on your machine

Read from SKILL.md and the folder at commit 1ce1bd8. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash
  • Read
  • Write
  • mcp__sonilo__*

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • pip
  • npm
  • curl

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • api.sonilo.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • SONILO_API_KEY

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Requires Sonilo through either transport — the MCP server connected, or the `sonilo` CLI installed and signed in — plus credentials: a `sonilo login` sign-in, the hosted OAuth plugin, or SONILO_API_KEY. See the setup-api-key skill.

  From compatibility in the SKILL.md frontmatter.

Context cost

Video To Sound loads about 2.6k tokens when it runs. Until then it costs about 84 tokens; SKILL.md has 1,096 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~84

When it runs · the whole SKILL.md, loaded when a task matches

~2.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Bash, Read, Write, mcp__sonilo__*

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from sonilo-ai/skills at commit 1ce1bd8, republished under its MIT licence (© sonilo-ai). 1,096 words, ~2,628 tokens.

name

video-to-sound

description

Generate music AND sound effects for a video in a single balanced, single-charge call using Sonilo. Use instead of calling the music and sound-effects skills separately for the same video — the two layers are mixed and ducked against each other by the backend. Returns a mixed audio track, or a new video with it muxed in.

allowed-tools

Bash, Read, Write, mcp__sonilo__*

compatibility

Requires Sonilo through either transport — the MCP server connected, or the `sonilo` CLI installed and signed in — plus credentials: a `sonilo login` sign-in, the hosted OAuth plugin, or SONILO_API_KEY. See the setup-api-key skill.

license

MIT

video_to_sound(
    video_path="~/Desktop/trailer.mp4",
    music_prompt="Cinematic, building tension",
    sfx_prompt="Footsteps, wind, distant thunder"
)

video_to_video_sound(
    video_path="~/Desktop/trailer.mp4",
    music_prompt="Cinematic, building tension"
)

from sonilo import Sonilo

client = Sonilo()  # reads SONILO_API_KEY

mix = client.video_to_sound.generate(
    video="trailer.mp4",
    music_prompt="Cinematic, building tension",
    sfx_prompt="Footsteps, wind, distant thunder",
)
mix.save("soundtrack.wav")

video = client.video_to_video_sound.generate(video="trailer.mp4", music_prompt="Cinematic, building tension")
video.save("scored.mp4")

import { SoniloClient, download } from "sonilo";
import { writeFile } from "node:fs/promises";

const client = new SoniloClient(); // reads SONILO_API_KEY

const mix = await client.videoToSound.generate({
  video: "./trailer.mp4",
  musicPrompt: "Cinematic, building tension",
  sfxPrompt: "Footsteps, wind, distant thunder",
});
await writeFile("soundtrack.wav", await download(mix.output_url));

const video = await client.videoToVideoSound.generate({
  video: "./trailer.mp4",
  musicPrompt: "Cinematic, building tension",
});
await writeFile("scored.mp4", await download(video.output_url));

sonilo video-to-sound --video trailer.mp4 \
  --music-prompt "Cinematic, building tension" --sfx-prompt "Footsteps, wind, distant thunder" \
  --output soundtrack.wav

sonilo video-to-video-sound --video trailer.mp4 --music-prompt "Cinematic, building tension"

curl -X POST "https://api.sonilo.com/v1/video-to-sound" \
  -H "Authorization: Bearer $SONILO_API_KEY" \
  -F "video=@trailer.mp4" \
  -F "music_prompt=Cinematic, building tension" \
  -F "sfx_prompt=Footsteps, wind, distant thunder"
# -> {"task_id": "..."}  poll GET /v1/tasks/{task_id}

© sonilo-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in video-to-sound of sonilo-ai/skills.

Open the folder on GitHubat commit 1ce1bd8