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TTSForFree

Official registry Media and design

Generate AI voices, text-to-speech, subtitles, transcription, and video localization.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http ttsforfree 'https://api.ttsforfree.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "ttsforfree": {
            "type": "http",
            "url": "https://api.ttsforfree.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. TTSForFree MCP server
  2. Connect
  3. What you can ask
  4. Tools (21)
  5. Privacy and data
  6. Support
  7. Registry metadata

TTSForFree MCP server

Text-to-speech, multi-voice podcasts, subtitle voiceovers, transcription and video dubbing for Claude and any other MCP client. Thousands of AI voices in 100+ languages, returned as hosted MP3 URLs.

A free plan is included. Paid generation uses your TTSForFree credits.

Connect

Claude (claude.ai, Desktop, mobile)
  1. Settings → Connectors → Add custom connector
  2. URL: https://api.ttsforfree.com/mcp
  3. Click Connect, sign in to TTSForFree and allow access.
Claude Code
claude mcp add --transport http ttsforfree https://api.ttsforfree.com/mcp

Then run /mcp → ttsforfree → Authenticate. With an API key instead:

claude mcp add --transport http ttsforfree https://api.ttsforfree.com/mcp \
  --header "X-API-Key: YOUR_API_KEY"
Cursor, VS Code and other clients
{
  "mcpServers": {
    "ttsforfree": {
      "url": "https://api.ttsforfree.com/mcp"
    }
  }
}

Add "headers": { "X-API-Key": "YOUR_API_KEY" } if the client does not support OAuth. Get an API key at ttsforfree.com/en/profile.

Claude API (MCP connector)
curl https://api.anthropic.com/v1/messages \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "anthropic-beta: mcp-client-2025-11-20" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-opus-5-5",
    "max_tokens": 2048,
    "mcp_servers": [{
      "type": "url",
      "name": "ttsforfree",
      "url": "https://api.ttsforfree.com/mcp",
      "authorization_token": "YOUR_TTSFORFREE_API_KEY"
    }],
    "tools": [{ "type": "mcp_toolset", "mcp_server_name": "ttsforfree" }],
    "messages": [{ "role": "user", "content": "Read this in a warm British voice: Welcome to our channel!" }]
  }'

What you can ask

Ask ClaudeTools it uses
"Read this lesson in a calm British voice from my favorites."list_favorite_voices → text_to_speech
"Turn this article into a 2-host podcast, one MP3."multi_voice_to_speech → get_job_detail
"Translate this SRT to Spanish, keep the timestamps, voice it, give me the ffmpeg command."srt_to_speech → get_job_status
"Transcribe this video into an SRT file."create_upload_url → transcribe_media
"Dub this video into Vietnamese, Spanish and Japanese for YouTube. Cost first."create_upload_url → estimate_video_localization → localize_video → get_localization_status
"Make me a young male voice that reviews stories, southern Vietnamese accent."design_custom_voice

Video walkthroughs: ttsforfree.com/en/claude-tts-connector.

Tools (21)

ToolTypeWhat it does
list_languagesreadAll supported languages and their codes.
list_voicesreadSearch voices by language, gender, provider and keywords ("warm narrator").
get_voice_detailsreadPersona, use case, accent, styles, preview audio and credit cost of one voice.
list_favorite_voicesreadThe user's favorite voices, in saved order.
list_my_custom_voicesreadPersonal voices from Voice Design / Voice Clone and the remaining quota.
add_favorite_voicewriteSave a voice to favorites.
remove_favorite_voicewriteRemove a voice from favorites.
design_custom_voicewriteCreate a new personal voice from a text description.
get_account_statusreadPlan, remaining credits, per-request limits and API rate limits.
text_to_speechjobOne text + one voice → MP3 (narration, articles, lessons).
multi_voice_to_speechjobOrdered segments with different voices → one MP3 (podcast, dialogue).
srt_to_speechjobSRT/WebVTT or timed segments → timeline-aligned MP3 + ffmpeg merge commands.
get_job_statusreadPoll a job until SUCCESS and get the audio URL.
list_recent_jobsreadRecent jobs with audio URLs, to reuse instead of paying twice.
get_job_detailreadPer-segment audio of a multi-voice/SRT job (for Remotion and captions).
create_upload_urlwriteOne-time upload URL for a local video/audio file (PUT, up to 2 GB).
transcribe_mediajobVideo/audio → timestamped SRT (speech-to-text).
get_transcriptionreadStatus and SRT of a transcription.
estimate_video_localizationreadCredit estimate to dub a video into several languages.
localize_videojobDub one video into many languages: audio track + dubbed video per language.
get_localization_statusreadProgress and results (audio URL for YouTube, dubbed video, SRT) per language.

job tools are asynchronous: they return a job_id, and the client polls the matching status tool until SUCCESS.

Prompts: youtube_multi_language_audio, video_voiceover, podcast_episode, narrate_text.

Privacy and data

  • OAuth access is scoped to your TTSForFree account and can be revoked any time from your TTSForFree profile (Connected apps).
  • Text, subtitles and uploaded media are processed only to produce the audio, subtitles or video you asked for.
  • Privacy policy: ttsforfree.com/en/privacy-policy

Support

Open an issue in this repository or contact us via ttsforfree.com/en/contact.

Registry metadata

server.json is the entry published to the MCP Registry. To publish an update, bump version in server.json and push a tag vX.Y.Z (or run the Publish to MCP Registry workflow manually). The workflow signs in with GitHub OIDC, so no secret is needed.

Frequently asked questions

What is TTSForFree?

Generate AI voices, text-to-speech, subtitles, transcription, and video localization.

How do I install TTSForFree?

It runs as a remote server. In Claude Code: claude mcp add --transport http ttsforfree 'https://api.ttsforfree.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does TTSForFree need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is TTSForFree open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains TTSForFree?

It is published by CalmNguyen. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.