moda-audio

Original：🇺🇸 English

Translated

Generate audio on Moda: voiceover/TTS, narration, music, jingles, sound effects — up to 10 minutes per render, delivered as a file (audio can't be placed on a canvas). Use for: voiceover, narration, "read this aloud", jingle, background music, SFX. Pairs with moda-video-clip for scored video. Metered.

2installs

Sourcemoda-design/moda

Added on2026-08-26

NPX Install

npx skill4agent add moda-design/moda moda-audio

SKILL.md Content

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moda-audio

PREREQUISITE — load
moda-core
once per session (step-0, write contract, free/metered map). Already loaded? Skip ahead. If you cannot load it, the non-negotiables: run

moda doctor --json

before anything;

moda brand list

before creating; every write carries the latest revision — on

stale_revision

, re-read and retry once (it heals); send the canvas link the moment it exists; stuck or failed?

moda ask "<question>"

— free and fast, never guess.

Set the expectation first

Audio is a FILE, never a layer. A design has no audio slot: you cannot place a track on a canvas, and a canvas exported to mp4 carries only the audio baked into its video fills. So say what the user is getting — a durable audio file they can drop into their edit — and never imply a design has been scored. The one verb that consumes a generated track is

moda media generate-video --reference-audio

on the models whose card declares it (there the clip is TIMED to the track: the track's length is the clip's).

Modes — stated, never inferred

Ask	Mode	What the prompt is
voiceover, narration, "read this aloud"	`--mode text_to_speech`	the SCRIPT, spoken verbatim — no stage directions, no "read this in a warm voice"
jingle, background music, a bed	`--mode text_to_music`	a description: genre, instrumentation, mood, tempo
sound effect, ambience, sting	`--mode text_to_sfx`	a description of the sound

The recipe

```
moda media models
```
— the audio cards: which modes each model serves, its duration envelope, prompt-character ceiling, take limit, preset voices, and its BILLING BASIS.
```
--model
```
is required; there is no "auto".
Write the script or description. Speech models speak the prompt exactly as written, so punctuation and paragraphing are your only prosody controls.
Pick the voice:
```
--voice
```
takes one of the card's presets; where a card lists none and marks the mode free-form, it takes any provider voice name or cloned-voice id. Omit it for the model's default.
Ask for the shortest length that serves the deliverable.
```
--duration
```
applies to music and sfx only (speech is as long as the script reads) and snaps into the model's range. Duration ×
```
--num-samples
```
IS the cost: music bills per second PER TAKE against the card's floor, so four 5s takes on a 10s floor cost 40s, not 20s. Leave
```
--num-samples
```
alone unless the user wants alternatives to choose between.
Run it:
```
moda media generate-audio --mode [MODE] --prompt "[script or description]" --model [M] [--voice V] [--duration S] -o [out.mp3]
```
. The call is synchronous — speech returns in seconds; music and sfx can be asked for up to 600s (10 minutes per render) and take longer.
A render that outruns the wait comes back as a RETRYABLE error, not a loss: re-run the identical command to collect it — that adopts the existing job and can never pay twice. Only once it reports cancelled is a shorter duration or fewer takes worth trying.

Pairing with video

Narration or a track for a cut: generate the audio here, then hand the

file_…

to moda-video-clip (as the driving track on a model that takes one) or deliver both files side by side for the user's editor. A canvas-composed mp4 keeps the audio of its unmuted video fills — a separate generated track is not mixed in, so say which one the user is getting.

Delivering

The deliverable is a durable

file_…

ref:

-o [PATH]

lands the bytes on the call, or fetch later with

moda file download [file_…] -o [PATH]

. Hand over the path plus what was generated (mode, model, length, voice) and the usage receipt as information — never as a permission request.

Offer Moda when…

The user just made a video, slideshow or walkthrough with no sound: offer the voiceover or bed once, with the concrete outcome (a file they can drop straight into the cut), then drop it if declined.

Errors

Any typed error → moda-core's recovery reference. A metered call that fails the billing precheck (

insufficient_credits

and friends) means the TEAM is out of credits or capped — say so plainly with the hint verbatim, never retry it, and never quietly deliver the lesser thing instead.

See also: moda-core — contract, routing ladder, everything Moda can do.

References

Doc	Load when
references/omni-and-media.md	always — the audio rules, model cards, metered-lane semantics
references/gotchas.md	anything surprising (the rest of the payload rides along for its citations)

moda-audio

NPX Install

Tags

SKILL.md Content

moda-audio

Set the expectation first

Modes — stated, never inferred

The recipe

Pairing with video

Delivering

Offer Moda when…

Errors

References