Speech AI - Pronunciation, STT & TTS
io.github.fasuizu-br/speech-aiVersion 2.3.0Pronunciation scoring, speech-to-text, and text-to-speech for language learning
Status
Responds367 msAnswered our handshake without sign-in.- Last checked
- Nov 14, 2026, 14:54 UTC
- Latency
- 367 ms
- Remotes responding
- 1 of 1
- Sign-in
- No sign-in
- Hosting
- Hosted outside the EU (detected)
- Registry data as of
- Nov 14, 2026, 22:14 UTC
Data from the official MCP Registry, checked by run.zero. How we check
Connect
Streamable HTTP
https://apim-ai-apis.azure-api.net/mcp/pronunciation/mcpResponds367 msNo sign-in
Claude Code
claude mcp add --transport http speech-ai https://apim-ai-apis.azure-api.net/mcp/pronunciation/mcpClaude Desktop and claude.ai
Settings > Connectors > Add custom connector
Name: speech-ai
Remote MCP server URL: https://apim-ai-apis.azure-api.net/mcp/pronunciation/mcpCursor
{
"mcpServers": {
"speech-ai": {
"url": "https://apim-ai-apis.azure-api.net/mcp/pronunciation/mcp"
}
}
}VS Code
code --add-mcp '{"name":"speech-ai","type":"http","url":"https://apim-ai-apis.azure-api.net/mcp/pronunciation/mcp"}'Built your own server? run.zero hosts MCP servers on European infrastructure.
Tools
10 tools
Read-only | Idempotent | Open world | ||
|---|---|---|---|---|
assess_pronunciationAssess English pronunciation quality from audio.
Scores pronunciation at four levels: overall, sentence, word, and phoneme.
Each score is 0-100. Phonemes are returned in both IPA and ARPAbet notation.
Sub-300ms inference latency.
Args:
audio_base64: Base64-encoded audio data. Supports WAV, MP3, OGG, and WebM formats.
text: The reference English text that the speaker was expected to read aloud.
audio_format: Audio format hint — one of 'wav', 'mp3', 'ogg', 'webm'. Defaults to 'wav'.
Returns:
dict with keys:
- overallScore (int 0-100): Overall pronunciation quality
- sentenceScore (int 0-100): Sentence-level fluency and accuracy
- words (list): Per-word scores, each containing:
- word (str): The word
- score (int 0-100): Word pronunciation score
- phonemes (list): Per-phoneme scores with IPA/ARPAbet notation
- decodedTranscript (str): What the model heard (ASR transcript)
- transcript (str): Reference text
- confidence (float 0-1): Scoring confidence
- warnings (list[str]): Quality warnings if any
- audioQuality (dict): Audio metrics (SNR, peak/RMS dB, etc.) | No | Yes | Yes | Yes |
check_pronunciation_serviceCheck if the pronunciation assessment service is healthy and ready.
Returns:
dict with keys:
- status (str): 'healthy' or error state
- modelLoaded (bool): Whether the scoring model is loaded
- version (str): API version | No | Yes | Yes | Yes |
check_stt_serviceCheck if the speech-to-text service is healthy and ready.
Returns:
dict with keys:
- status (str): 'healthy' or error state
- modelLoaded (bool): Whether the STT model is loaded
- version (str): API version | No | Yes | Yes | Yes |
check_tts_serviceCheck if the text-to-speech service is healthy and ready.
Returns:
dict with keys:
- status (str): 'healthy' or error state
- modelLoaded (bool): Whether the TTS model is loaded
- version (str): API version | No | Yes | Yes | Yes |
check_whisper_serviceCheck if the Whisper STT Pro service is healthy and ready.
Returns:
dict with keys:
- status (str): 'healthy' or error state
- modelLoaded (bool): Whether the Whisper model is loaded
- diarizeLoaded (bool): Whether the diarization pipeline is loaded
- version (str): API version
- modelName (str): Whisper model name (e.g. 'large-v3-turbo') | No | Yes | Yes | Yes |
get_phoneme_inventoryGet the full phoneme inventory supported by the pronunciation scorer.
Returns a list of all English phonemes the engine can assess, including
ARPAbet symbol, IPA equivalent, example word, and phoneme category
(vowel, consonant, diphthong).
Returns:
list of dicts, each with keys:
- arpabet (str): ARPAbet symbol (e.g. 'AA', 'TH')
- ipa (str): IPA notation
- example (str): Example word containing the phoneme
- category (str): vowel, consonant, or diphthong | No | Yes | Yes | No |
list_tts_voicesList all available text-to-speech voices with metadata.
Returns:
dict with keys:
- voices (list): Available voices, each with id, name, gender, accent, grade
- defaultVoice (str): Default voice ID | No | Yes | Yes | Yes |
synthesize_speechGenerate natural speech audio from English text.
Produces high-quality speech with 12 English voices.
Returns base64-encoded WAV audio (16-bit PCM, 24kHz mono) along with metadata.
Available voices:
- af_heart (default), af_bella, af_nicole, af_sarah, af_sky (American female)
- am_adam, am_michael (American male)
- bf_emma, bf_isabella (British female)
- bm_george, bm_lewis, bm_daniel (British male)
Args:
text: English text to synthesize (1-5000 characters).
voice: Voice ID. See list above. Defaults to 'af_heart'.
speed: Speed multiplier from 0.5 to 2.0 (default: 1.0).
Returns:
dict with keys:
- audio_base64 (str): Base64-encoded WAV audio (16-bit PCM, 24kHz)
- duration_ms (str): Audio duration in milliseconds
- voice (str): Voice ID used
- text_length (str): Input text character count
- processing_ms (str): Synthesis time in milliseconds | No | Yes | Yes | Yes |
transcribe_audioTranscribe audio to text with word-level timestamps.
Converts spoken English audio into text with optional word-level timestamps
and per-word confidence scores.
Args:
audio_base64: Base64-encoded audio data (WAV, MP3, OGG, FLAC, WebM).
audio_format: Audio format hint. Auto-detected from magic bytes if omitted.
include_timestamps: Whether to include word-level timing (default: true).
Returns:
dict with keys:
- text (str): Full decoded transcript
- words (list): Per-word results with timestamps, each containing:
- word (str): The transcribed word
- start (float): Start time in seconds
- end (float): End time in seconds
- confidence (float 0-1): Word-level confidence
- audioDurationMs (int): Audio duration in milliseconds
- metadata (dict): Processing time, audio length, model version
- audioQuality (dict): Audio metrics (SNR, peak/RMS dB, etc.) | No | Yes | Yes | Yes |
transcribe_audio_proTranscribe audio with Whisper Large V3 Turbo — multilingual STT.
Supports 99 languages with automatic language detection, word-level
timestamps, per-word confidence scores, and optional speaker diarization
(identifies who spoke each word). Best-in-class WER (~2%).
Args:
audio_base64: Base64-encoded audio (WAV, MP3, OGG, FLAC, WebM).
language: Language code. Auto-detected if omitted. Supports 99 languages.
diarize: Enable speaker diarization (default: false). When true, each word
includes a speaker label (e.g. SPEAKER_00, SPEAKER_01).
Returns:
dict with keys:
- text (str): Full decoded transcript
- words (list): Per-word results with timestamps, each containing:
- word (str), start (float), end (float), confidence (float 0-1)
- speaker (str|null): Speaker label when diarize=true
- speakers (dict|null): Speaker info with count and labels
- audioDurationMs (int): Audio duration in milliseconds
- metadata (dict): Processing time, language, languageProbability
- audioQuality (dict): Audio metrics (SNR, peak/RMS dB, etc.) | No | Yes | Yes | Yes |
Details
- Registry status
- Active
- Published
- Mar 5, 2026
- Updated
- Mar 5, 2026
- Categories (suggested)
- Design and mediaSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
- GDPR
- Not declared