Compile timelines of TTS speech, music and SFX into ducked, loudness-mastered audio with subtitles
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io.github.user-github-me/soniccraft is an MCP server that compile timelines of TTS speech, music and SFX into ducked, loudness-mastered audio with subtitles. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 60/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients - only the file and path differ.
{
"mcpServers": {
"soniccraft": {
"args": [
"-y",
"soniccraft-mcp"
],
"command": "npx"
}
}
}Are you the author?
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Compile timelines of TTS speech, music and SFX into ducked, loudness-mastered audio with subtitles
This server supports HTTP transport. Be the first to test it - help the community know if it works.
Five weighted categories - click any category to see the underlying evidence.
No known CVEs.
Checked soniccraft-mcp against OSV.dev.
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A declarative, deterministic audio engine for AI agents. Describe a production as a YAML (or JSON) timeline: who says what, in which order, over which music, at what loudness. SonicCraft compiles it into TTS speech, music beds and sound effects, mixed with sidechain ducking, mastered to an EBU R128 loudness target, plus WebVTT/SRT subtitles that match the audio it actually rendered. It ships as a CLI, an MCP server and an Agent Skill.
Website · Quickstart · Use it from an AI agent · MCP server · Agent Skill
Give an agent (Claude Code, Codex, Cursor, Gemini CLI, ...) the link to this repository and ask for audio, for example "Use https://github.com/user-github-me/soniccraft to make a 30-second voiceover with background music for my product video." Everything it needs is below and in AGENTS.md.
Install the CLI (prebuilt and checksum-verified, no Rust needed). Homebrew, Scoop, Docker and Cargo work too: see Quickstart.
curl -fsSL https://raw.githubusercontent.com/user-github-me/soniccraft/main/install.sh | sh # macOS, Linux
irm https://raw.githubusercontent.com/user-github-me/soniccraft/main/install.ps1 | iex # Windows
Write a timeline. soniccraft init my-audio starts one that renders offline: macOS voices on a Mac,
elsewhere a mock test voice (not real speech). Real voices anywhere: Kokoro or Piper (free, local) or an
ElevenLabs, OpenAI or Cartesia key, see Providers. soniccraft init --list shows the
templates, soniccraft providers the voices usable here, and soniccraft schema the JSON Schema; the
Agent Skill explains the format.
Check it, see the cost, render it:
soniccraft validate my-audio/timeline.yaml # errors with a code, line, column and fix hint
soniccraft plan my-audio/timeline.yaml # free dry run: timing, ducking, characters to synthesize
soniccraft render my-audio/timeline.yaml --preview # mastered audio, subtitles, manifest, preview page
To keep SonicCraft in an agent for good, add the skill and the MCP server. Both use the CLI from step 1; with
Node.js 20 or newer the MCP server also runs with nothing installed: use npx -y soniccraft-mcp in place of
soniccraft mcp below.
| Agent | Skill | MCP server |
|---|---|---|
| Claude Code | claude plugin marketplace add user-github-me/soniccraft, then claude plugin install soniccraft@soniccraft | included in the plugin, or claude mcp add soniccraft -- soniccraft mcp |
| Codex | npx skills add user-github-me/soniccraft -g -a codex | codex mcp add soniccraft -- soniccraft mcp |
| Cursor | npx skills add user-github-me/soniccraft -g -a cursor | {"mcpServers": {"soniccraft": {"command": "soniccraft", "args": ["mcp"]}}} in .cursor/mcp.json |
| Gemini CLI and others | npx skills add user-github-me/soniccraft -g (choose the agent) | the same mcpServers entry (Gemini CLI: ~/.gemini/settings.json) |
The server is also in the [official MCP Registry](