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Brainiall Pronunciation
com.brainiall/pronunciation in the official MCP registry.
Endpoint https://api.brainiall.com/mcp/pronunciation/mcp.
The registry describes it as: Pronunciation assessment, phoneme scoring, speaker voice ID, audio transcription, speech synthesis.
We read its 14 tools on 2026-10-22. 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
assess_pronunciation check_pronunciation_service get_phoneme_inventory transcribe_audio check_stt_service voice_id_enroll voice_id_verify voice_id_identify voice_id_list_speakers synthesize_speech list_tts_voices check_tts_service transcribe_audio_pro check_whisper_service
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The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/com-brainiall-pronunciation)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.