How to adjust audio pitch with Claude MCP and Medux

Use Claude and Medux through MCP to raise or lower the pitch of an audio file without rebuilding the workflow manually. This guide keeps file roles and constraints in context, reviews the proposed call, and validates the returned result.

Claude preparing the Medux audio pitch workflow
Claude turns a plain-English request into an upload, two pitch-shift jobs, status checks, and downloadable outputs.

Claude-specific workflow

Run Adjust Audio Pitch as a Claude MCP workflow

Keep the goal, source assets, and constraints together in the conversation. Ask Claude to restate the source audio and the requested semitone or pitch change before proposing the Medux audio pitch tool. That context checkpoint makes the file roles and desired outcome easy to correct before any Medux call is approved.

Claude prompt pattern

Using the assets and requirements in this conversation, help me adjust audio pitch with Medux MCP.
Restate which input fulfills each role: the source audio and the requested semitone or pitch change.
Propose the the Medux audio pitch tool call and summarize its arguments before asking for approval.
When it finishes, return the pitch-adjusted audio file with a checklist confirming that the pitch changed by the requested amount and the audio remains complete.

Context checkpoint

Have Claude summarize the intended transformation, identify every source asset by role, and list the important constraints. Review that summary together with the proposed tool arguments; correct the conversation first if a file, order, time range, or setting is ambiguous.

Result verification

Keep the Medux task ID in the conversation while Claude checks progress. When processing ends, ask for the pitch-adjusted audio file plus a concise validation checklist confirming that the pitch changed by the requested amount and the audio remains complete.

Before you start

Connect Medux to Claude

Make sure the Medux MCP connector is enabled and available in the current Claude workspace.

Prepare the source audio

Place your file in a local project folder. The video uses sample-audio.m4a.

project/
└── sample-audio.m4a

The workflow

Describe the task
Create upload URL
Upload audio
Run two pitch shifts
Download results
01

Describe both pitch changes in one prompt

Ask Claude to use Medux and specify the exact change for each output. In the tutorial, the source file is shifted up by 100% and down by 50%.

Use Medux to modify the pitch of sample-audio.m4a.
Create two outputs:
- Increase pitch by 100% (2× frequency / +12 semitones)
- Decrease pitch by 50% (0.5× frequency / −12 semitones)
Upload the file with curl when needed.
Why semitones? A one-octave shift equals 12 semitones. Using +12 or −12 makes the requested change unambiguous.
02

Let Claude request an upload URL from Medux

Claude calls the Medux file tool through MCP and receives a temporary upload URL. If the remote storage endpoint cannot be reached from Claude’s sandbox, Claude can provide a local curl command instead.

Claude requesting a Medux upload URL
The workflow falls back to a local upload command when the sandbox cannot reach the storage endpoint.
03

Upload the audio with a width-safe command

Run the generated command from the folder containing the audio file. The command below is intentionally split across lines so it remains readable on desktop and mobile layouts.

curl -X PUT   "PASTE_THE_MEDUX_UPLOAD_URL_HERE"   -H "Content-Type: audio/mp4"   --data-binary "@sample-audio.m4a"   -w "\nHTTP status: %{http_code}\n"

A successful upload returns HTTP status 200. Temporary upload URLs usually expire, so run the command soon after Claude creates it.

Successful curl upload followed by pitch-shift tasks
After the upload succeeds, Claude starts both pitch-shift jobs through Medux.
04

Run both Medux pitch jobs

Claude submits two calls to the Medux pitch-shift tool: one with +12 semitones and one with −12 semitones. Both tasks can run in parallel.

Higher version

+12 semitones → 2× frequency → one octave higher.

Lower version

−12 semitones → 0.5× frequency → one octave lower.

05

Approve status checks and wait for completion

Claude polls each Medux task using its task ID. Approve the tool call when prompted, then let Claude continue until both outputs are ready.

Claude polling Medux task status
Claude checks the two task IDs instead of requiring manual monitoring.
06

Download and verify the generated files

When Medux returns the result URLs, save each output locally with a clear filename. Use -L so curl follows redirects.

curl -L "RESULT_URL_FOR_HIGHER_PITCH"   -o sample-audio-pitch-up-2x.mp3

curl -L "RESULT_URL_FOR_LOWER_PITCH"   -o sample-audio-pitch-down-0.5x.mp3
Downloading a completed Medux audio result
Recommended check: play both files and confirm that duration, loudness, and intelligibility remain suitable for your use case.

What this workflow removes

You do not need to open a separate media dashboard, write a custom API client, or manually manage two independent processing jobs. Claude coordinates the steps; Medux handles the audio transformation.

✓ One natural-language request
✓ Two outputs in parallel
✓ Local downloadable MP3 files

Reusable prompt

Replace the filename and semitone values to reuse the same workflow for other audio files.

Use Medux through MCP to adjust the pitch of [AUDIO_FILE].
Create these versions:
- [SEMITONES_UP] semitones higher
- [SEMITONES_DOWN] semitones lower
Upload the source with curl if the sandbox cannot access the upload endpoint.
Poll both tasks until completion, then provide commands to download the results.

Explore related workflows

Continue with a nearby Medux workflow or compare how the same task works across Claude MCP and Codex MCP.

Related Medux tutorials

How to Clone a Voice and Generate Speech with Codex MCP and MeduxHow to Add an Audio Track to Video with Claude MCP and MeduxHow to Create a Lip-Synced Avatar Video with Codex MCP and MeduxHow to Merge Video Clips with Claude MCP and Medux

Quick answer

How do I run Adjust Audio Pitch with Claude MCP?

Claude can use the Medux audio pitch tool through Medux MCP to raise or lower the pitch of an audio file without rebuilding the workflow manually. The workflow keeps input roles and constraints in context, reviews the proposed call, and checks the returned result.

What does this Medux tutorial cover?

Claude can use the Medux audio pitch tool through Medux MCP to raise or lower the pitch of an audio file without rebuilding the workflow manually. The workflow keeps input roles and constraints in context, reviews the proposed call, and checks the returned result.

Related topics: Adjust Audio Pitch · Adjust Audio Pitch with Claude MCP · Medux MCP tutorial

Build with the API

API reference for this workflow

Use the API reference to automate this workflow, or follow the matching guide in our official GitHub repository.