How do I run Tune AI Voice Parameters with Codex MCP?

Codex can use medux_edit_voice_parameters through Medux MCP to update the tuning parameters of an existing reusable voice asset. The workflow identifies the exact inputs, reviews the tool arguments, monitors processing, and verifies the returned result.

Codex MCP tutorial · clone

How to tune AI voice parameters with Codex MCP and Medux

Q: Which MCP tool does this tutorial use?

This workflow uses medux_edit_voice_parameters . Review its arguments before approval and consult the API reference for the current contract.

Use Codex and Medux through MCP to update the tuning parameters of an existing reusable voice asset. This guide covers input preparation, the approval gate, task monitoring, and a concrete output check.

POST/api/app/v1/clone/voice/{voice_asset_id}/parameters

Update tuning parameters for an existing reusable voice asset.

Open the Edit Voice Parameters API reference →

Codex-specific workflow

Run Tune AI Voice Parameters as a Codex MCP task

Use the active workspace as the source of truth. Ask Codex to identify the voice asset ID and the exact parameter values to change, select medux_edit_voice_parameters, and keep the Medux task ID and returned output with the rest of the project. Naming the input roles and the expected result prevents an agent from guessing which file should be used where.

Codex prompt pattern

In this workspace, use medux_edit_voice_parameters through Medux MCP to tune AI voice parameters.
First inspect and identify the voice asset ID and the exact parameter values to change.
Show me the exact tool arguments before execution.
After the task completes, return the updated voice configuration and verify that only the requested voice parameters changed and the correct asset ID was updated.

Approval gate

Before approving the call, compare the selected tool, file or asset IDs, ordering, timing, and output settings with the request. If a local filename was mapped to an uploaded Medux file ID, keep that mapping visible so it can be audited later.

Result verification

Let Codex monitor an asynchronous task until it reaches a terminal state, then save or report the updated voice configuration. The final check is explicit: confirm that only the requested voice parameters changed and the correct asset ID was updated.

What this tutorial does

Medux operation

Update tuning parameters for an existing reusable voice asset.

Agent workflow

Codex selects medux_edit_voice_parameters, presents the arguments for review, calls Medux, and reports the response.

Before you start

Authentication

Authentication is required via Authorization header.

Preconditions

Requires an existing voice asset id.
Provide at least one change such as speed, tone, emotion, or title.

Prompt Codex

Start with a clear instruction that names the Medux operation and the intended inputs.

Use Medux to run Edit Voice Parameters. Review the required inputs, call medux_edit_voice_parameters, wait for the result if a task is returned, and report the output clearly.

Request fields to review

Confirm these values before approving the MCP tool call. The linked API page remains the source of truth for current limits and response semantics.

Field	Type	Requirement	Purpose
`voice_asset_id`	string	Required	Provide the value described in the API reference.
`emotion`	int32	Optional	Provide the value described in the API reference.
`speed`	int32	Optional	Provide the value described in the API reference.
`title`	string	Optional	Provide the value described in the API reference.
`tone`	int32	Optional	Provide the value described in the API reference.

Step-by-step workflow

Connect Medux MCP to Codex

Add the Medux remote MCP endpoint to Codex, provide an authorized credential, and confirm that the medux_edit_voice_parameters tool is available.

Prepare the required inputs

Prepare the source files, asset IDs, text, or settings required by the operation. Upload local media first when the tool requests file IDs.

Ask Codex to run Edit Voice Parameters

Use one direct instruction with the intended values. Codex should select the Medux tool and show the proposed arguments before execution.

Review and approve the tool call

Check that the tool is medux_edit_voice_parameters and that each file ID, task ID, option, and output setting matches your request before approving it.

Check the Medux response

If Medux returns an asynchronous task, let the agent monitor it until completion; otherwise review the immediate response and save any result identifiers or output URLs.

Workflow recap

User goal
  ↓
Codex selects medux_edit_voice_parameters
  ↓
Review inputs and approve the tool call
  ↓
Medux runs Edit Voice Parameters
  ↓
Codex reports the response and output

Frequently asked questions

Can Codex use the Medux Edit Voice Parameters API through MCP?

Codex can call the medux_edit_voice_parameters Medux MCP tool to update tuning parameters for an existing reusable voice asset. This guide covers the required inputs, approval flow, result handling, and the matching API reference.

Which MCP tool does this tutorial use?

This workflow uses medux_edit_voice_parameters. Review its arguments before approval and consult the API reference for the current contract.