MPPtempoquality 0.55

Transform audio using Stability AI's generative models via pay-per-call MPP endpoint.

Price
per_call
Protocol
mpp
Verified
no
Endpoint
https://stability-ai.mpp.paywithlocus.com/stability-ai/audio-to-audio

What it does

This endpoint provides access to Stability AI's Audio to Audio capability through the Locus MPP (Micropayment Protocol) gateway. It accepts an input audio file and a text prompt describing the desired transformation, then returns a modified audio output generated by Stable Audio 2 or 2.5 models.

The service supports configurable transformation strength (0–1), inference steps, output format (mp3/wav), and reproducible results via seed parameter. Pricing is approximately $0.23 per call at 50 steps using stable-audio-2, settled in pathUSD on Tempo L2. The endpoint uses the MPP charge intent, meaning each call is a one-shot payment.

This is one endpoint within a broader Stability AI suite available through Locus MPP that includes image generation (Ultra, Core, SD3), image editing (erase, inpaint, outpaint, search-and-replace), upscaling, 3D model generation, and other audio operations. The endpoint requires a POST request with JSON body containing at minimum the audio file and prompt fields.

Capabilities

audio-to-audioaudio-transformationgenerative-audiostable-audio-2stable-audio-2.5prompt-guided-audiopay-per-callmpp-tempo-settlement

Use cases

  • —Transforming existing audio clips into new styles or genres based on text prompts
  • —Remixing music or sound effects with AI-guided modifications
  • —Creating variations of audio samples for sound design
  • —Automated audio post-processing with natural language control
  • —Generating transformed audio assets for games or media production

Fit

Best for

  • —AI agents needing programmatic audio transformation without API key management
  • —Pay-per-use audio generation without subscription commitments
  • —Developers integrating audio style transfer into automated pipelines

Not for

  • —Real-time audio streaming or live audio processing
  • —Text-to-speech or voice synthesis tasks
  • —Free or high-volume batch processing where per-call costs add up

Quick start

curl -X POST https://stability-ai.mpp.paywithlocus.com/stability-ai/audio-to-audio \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer <MPP_TOKEN>" \
  -d '{
    "audio": "<base64-encoded-audio>",
    "prompt": "Transform into ambient electronic soundscape",
    "strength": 0.7,
    "steps": 50,
    "output_format": "mp3"
  }'

Example

Request

{
  "seed": 42,
  "audio": "<base64-encoded-audio-file>",
  "model": "stable-audio-2",
  "steps": 50,
  "prompt": "Transform into ambient electronic soundscape",
  "strength": 0.7,
  "output_format": "mp3"
}

Endpoint

URLhttps://stability-ai.mpp.paywithlocus.com/stability-ai/audio-to-audio
Transporthttp
Protocolmpp
CurrencypathUSD

Quality

0.55/ 1.00

The OpenAPI schema is well-defined with clear request parameters and pricing info. However, the specific endpoint did not return a 402 challenge on HEAD/GET (returned 404 instead, likely because it only accepts POST), no response schema is documented, and crawled pages returned no useful documentation. Pricing is stated in the OpenAPI description field but the amount field is null, requiring reliance on the text description.

Warnings

  • —Endpoint returned 404 on HEAD/GET probes — likely POST-only; liveness not fully confirmed via MPP challenge
  • —No response schema documented — output format/structure is unknown
  • —Price amount field is null; $0.23 figure comes from OpenAPI description text only
  • —Root domain returns 404 with redirect to skill.md/llms.txt docs

Citations

Provenance

Indexed frommpp_dev
Enriched2026-04-19 17:38:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-21

Agent access

JSONhttps://clawmart.sh/api/listings/hBfd6L
Transform audio using Stability AI's generative models via pay-per-call MPP endpoint. — Clawmart · Clawmart