Generate AI voices, text-to-speech, subtitles, transcription, and video localization.
Connect Remote server
claude mcp add --transport http ttsforfree https://api.ttsforfree.com/mcp
{
"mcpServers": {
"ttsforfree": {
"url": "https://api.ttsforfree.com/mcp"
}
}
}
{
"servers": {
"ttsforfree": {
"type": "http",
"url": "https://api.ttsforfree.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://api.ttsforfree.com/mcp
Tools 25 found in our last check
list_languagesList every language supported by TTSForFree text-to-speech. Returns language codes to pass to list_voices.
list_voicesSearch the AI voice catalog for one language. Each result has a `voice` token (v1:...) - pass it unchanged as `voice` to text_to_speech, multi_voice_to_speech or srt_to_speech. Results are sorted by popularity; `can_use=false` means the user's plan cannot use that voice. Prefer…
get_voice_detailsGet full metadata for one voice token: persona, use case, accent, pitch, styles, preview audio and credit cost.
list_my_custom_voicesList the user's personal voices created with Voice Design (from a text prompt) or Voice Clone (from an audio sample), plus the remaining custom-voice quota. Use `voice` from the result in any speech tool.
list_favorite_voicesList the voices the user marked as favorites, in their saved order. Check this first when the user did not name a voice.
add_favorite_voiceSave a voice to the user's favorites (only when the user asks).
remove_favorite_voiceRemove a voice from the user's favorites (only when the user asks).
design_custom_voiceCreate a new personal AI voice from a natural-language description (Gemini Voice Design). Uses one slot of the user's custom-voice quota - confirm with the user first. Good for a unique narrator or a character voice in a video/podcast. Returns the new `voice` token.
get_account_statusShow the user's plan tier, remaining characters/credits, max characters per request, max blocks per multi-voice/SRT job and API rate limits. Call before large jobs.
text_to_speechConvert one text into one MP3 with one voice. Use for narration, voiceover scripts, articles, lessons, announcements or any audio whose length can follow the speech. Consumes credits (characters x voice rate). Returns job_id, status and audio_url when ready.
multi_voice_to_speechRender ordered segments, each with its own voice, into ONE merged MP3. Use for podcasts, dialogues, interviews, audio dramas or explainer videos with several speakers when there are no fixed timestamps. Consumes credits.
srt_to_speechCreate ONE MP3 that follows a subtitle timeline: every cue starts at its timestamp and speech speed auto-fits the cue duration. Use for video voiceover, dubbing translated subtitles, YouTube localization, tutorials and any edit where audio must line up with existing video. Pass…
get_job_statusCheck a speech job created earlier. Returns status (PENDING | SUCCESS | ERROR) and audio_url once SUCCESS. Never guess or fetch an audio URL before SUCCESS.
list_recent_jobsList the user's most recent speech jobs with status and audio URLs, to reuse earlier audio instead of paying again.
get_job_detailGet a multi_voice_to_speech or srt_to_speech job with every segment: text, voice and its own audio_url, plus the merged audio. Use it to build captions or a Remotion/NLE timeline (one <Sequence> per segment; measure each file's duration in the renderer).
create_upload_urlGet a one-time URL to upload a local video or audio file (mp4, mov, webm, mkv, mp3, wav, m4a...) up to 2 GB. Upload with HTTP PUT of the raw bytes, e.g. `curl -T video.mp4 "<upload_url>"` (valid 15 minutes), then pass `public_url` to transcribe_media or localize_video. Only file…
transcribe_mediaSpeech-to-text for an uploaded video or audio file: returns timestamped SRT (the timeline to rewrite, translate or re-voice with srt_to_speech). Credits are charged per second of media, measured by the server. Use language = the spoken language code from list_languages.
get_transcriptionCheck a transcribe_media job and get its SRT once finished.
estimate_video_localizationEstimate the credits to dub one video into one or more languages (speech-to-text + translation + voice + video merge) before running localize_video. Pass video_url (duration is measured) or duration_seconds.
localize_videoFull automatic dubbing of an uploaded video: transcribe once, translate, voice every target language with its own voice and render a dubbed video per language. Each language returns an audio_url (voice track aligned to the original timeline - upload it to YouTube Studio as a mul…
get_localization_statusStatus of localize_video jobs: current step, and when Completed the dubbed audio_url, final_video_url and translated SRT for each language.
get_publishing_statusCheck where the user can publish a finished video: which platforms this site offers (YouTube, X), which of the user's accounts are connected, today's YouTube limit, the credit cost of an X post and the user's credits. Call this before offering to publish and before publish_video…
publish_videoPost a finished video to one of the user's connected accounts. Only call after the user explicitly agreed to publish and confirmed the title (YouTube) or post text (X): this posts publicly on their behalf. YouTube: posted right away, free, needs `title`; set `privacy` (default p…
list_published_postsThe user's recent YouTube / X posts made through TTSForFree, newest first: status (scheduled, uploading, posted, failed, cancelled), the live post_url once posted, the scheduled time and any error message. Use it after publish_video to report the live link.
cancel_scheduled_postCancel a post that is still scheduled (or failed) so it will not be published. A post that is already uploading or posted cannot be cancelled. No credits are charged for cancelled posts.
Details
| Endpoint | https://api.ttsforfree.com/mcp (Streamable HTTP) |
| First published | 22 Oct 2026 |
| Last updated | 22 Oct 2026 |
| Registry name | io.github.CalmNguyen/ttsforfree |
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