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TTSForFree
io.github.CalmNguyen/ttsforfree in the official MCP registry.
Endpoint https://api.ttsforfree.com/mcp. Source: github.com/CalmNguyen/ttsforfree-mcp.
The registry describes it as: Generate AI voices, text-to-speech, subtitles, transcription, and video localization.
We read its 21 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
list_languages list_voices get_voice_details list_my_custom_voices list_favorite_voices add_favorite_voice remove_favorite_voice design_custom_voice get_account_status text_to_speech multi_voice_to_speech srt_to_speech get_job_status list_recent_jobs get_job_detail create_upload_url transcribe_media get_transcription estimate_video_localization localize_video get_localization_status
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/io-github-calmnguyen-ttsforfree)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.
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