How do I install Voice?

Voice is a local plugin. Install it using npm package: @forgemeshlabs/voice-mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is Voice safe to use?

Yes. Voice passed MCP Marketplace's automated security scan with a score of 10/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with Voice?

Voice uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Voice MCP Server

by ForgeMesh

Developer ToolsLow Risk10.0Local

Free

Give Your Agent A Voice: x402 pay-per-call speech with 20 voices, 10 personas, 31 languages.

About

Give Your Agent A Voice: x402 pay-per-call speech with 20 voices, 10 personas, 31 languages.

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (2 strong, 2 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry. Trust signals: trusted author (57/59 approved).

5 files analyzed · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

env_vars

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-forgemeshlabs-voice-mcp": {
      "args": [
        "-y",
        "@forgemeshlabs/voice-mcp"
      ],
      "command": "npx"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

Voice MCP

Give Your Agent A Voice: x402 pay-per-call speech with 20 voices, 10 personas, 31 languages, granular speed and quality controls, OpenAI-shaped requests, and batch audio.

This MCP wraps https://voice.forgemesh.io, an x402 Voice API with standard voices, persona voices, OpenAI-shaped speech requests, 31 languages, speed controls, quality controls, and batch generation. Payments are made per call in USDC on Base.

Voice Coverage

10 standard voices: M1-M5, F1-F5
10 persona voices: Storyteller, Narrator, Announcer, Assistant, Urgent, Sage, Spark, Anchor, Velvet, Echo
31 languages: en, ko, ja, ar, bg, cs, da, de, el, es, et, fi, fr, hi, hr, hu, id, it, lt, lv, nl, pl, pt, ro, ru, sk, sl, sv, tr, uk, vi
Granular control: speed 0.7x-2.0x, quality steps 1-100, persona selection, OpenAI-shaped audio format requests, and batch generation for up to 20 texts
Voice samples are generated on demand by the paid speech tools and returned as audio_base64 WAV output

Voice Samples

Tools

Tool	Price	Purpose
`list_voice_catalog`	Free	Voices, personas, languages, pricing, buckets, and controls
`generate_standard_voice`	$0.001 / $0.003	Low-cost speech with 10 standard voices
`generate_controlled_voice`	$0.003 / $0.006	Speech with granular speed and quality controls
`generate_persona_voice`	$0.005 / $0.01	Storyteller, Velvet, Narrator, Announcer, Assistant, Urgent, and more
`generate_openai_compatible_voice`	$0.001 / $0.003	OpenAI-shaped `/v1/audio/speech` request
`generate_batch_voices`	$0.002 / $0.005	Up to 20 texts per call

Short prices apply to 1-500 characters. Long prices apply to 501-2000 characters.

The MCP validates voice names, language codes, audio formats, speed/quality ranges, batch item count, and character limits locally before making a paid x402 call.

Install

npm install -g @forgemeshlabs/voice-mcp

Docker

Build:

docker build -t voice-mcp .

Run over stdio:

docker run --rm -i \
  -e WALLET_PRIVATE_KEY=0x... \
  voice-mcp

CMD arguments:

["node", "index.js"]

MCP Config

{
  "mcpServers": {
    "voice": {
      "command": "voice-mcp",
      "env": {
        "WALLET_PRIVATE_KEY": "0x..."
      }
    }
  }
}

Requirements and safety

Use a dedicated, low-balance wallet; the server signs payments with WALLET_PRIVATE_KEY.
The server refuses to sign for any payee other than the ForgeMesh Voice wallet, any network other than Base mainnet, any asset other than USDC, or any amount over the built-in per-call cap ($0.01).
Optional env X402_MAX_PRICE_USD (per call) and X402_SESSION_BUDGET_USD (cumulative per process, default $10) can only LOWER the built-in caps.
The backend URL is fixed to https://voice.forgemesh.io; all requests are same-origin, time-limited (60s), size-capped (2 MB) and never follow redirects.

Notes

Paid tools require a Base wallet private key with USDC.
The server returns audio_base64 for audio tools so MCP clients can store, play, or forward the WAV bytes.
No API keys or subscriptions are required for the voice service itself.