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TTSForFree

io.github.CalmNguyen/ttsforfreeCalmNguyenstreamable-httpv1.0.0Scanned

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

21 tools: 1 can delete or cancel things, 9 change things and 11 only read.

Tools: 1 delete, 0 irreversible, 9 write, 11 read.
  • Reads private data · 0
  • Reads text others write · 2
  • Can send data out · 0
  • No findings

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10 of these tools change something. Run those as governed actions.

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

21 tools

Deletes or cancels 1Claude Code: deny
  • remove_favorite_voiceRemove a voice from the user's favorites (only when the user asks).No findings

    Why it is in this group

    • The name "remove_favorite_voice" says "remove": a word for removing or ending something.
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Remove a voice from the user's favorites (only when the user asks).

    Annotations the server declares

    • title: Remove favorite voice
    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: true
    • openWorldHint: false
Changes things 9Claude Code: ask
  • add_favorite_voiceSave a voice to the user's favorites (only when the user asks).No findings

    Why it is in this group

    • The name "add_favorite_voice" says "add": a word for a change.
    Description, as the server wrote it
    Save a voice to the user's favorites (only when the user asks).

    Annotations the server declares

    • title: Add favorite voice
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • 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.No findings

    Why it is in this group

    • The name "create_upload_url" says "create": a word for a change.
    Description, as the server wrote it
    Get 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 files uploaded here (or on ttsforfree.com) are accepted; YouTube and other external links are never downloaded. If you cannot run commands, ask the user to upload the file on https://ttsforfree.com/en/video-localization/ and paste the file link.

    Annotations the server declares

    • title: Upload a video/audio file
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • design_custom_voiceCreate a new personal AI voice from a natural-language description (Gemini Voice Design).No findings

    Why it is in this group

    • The description's first verb is "create": a word for a change.
    Description, as the server wrote it
    Create 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.

    Annotations the server declares

    • title: Design a custom voice
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • 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.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Estimate 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.

    Annotations the server declares

    • title: Estimate video dubbing cost
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • 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.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Full 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 multi-language audio track) and a final_video_url. Takes several minutes: returns job_guids immediately; poll get_localization_status. Confirm the cost with estimate_video_localization for long videos.

    Annotations the server declares

    • title: Dub a video into other languages
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • multi_voice_to_speechRender ordered segments, each with its own voice, into ONE merged MP3.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Render 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.

    Annotations the server declares

    • title: Multi-voice audio (podcast / dialogue)
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • srt_to_speechCreate ONE MP3 that follows a subtitle timeline: every cue starts at its timestamp and speech speed auto-fits the cue duration.No findings

    Why it is in this group

    • The description's first verb is "create": a word for a change.
    Description, as the server wrote it
    Create 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 either raw `srt` (SRT or WebVTT text) or `segments` with start_ms/end_ms. For several speakers set `speaker_voices` and prefix cue text with '[Name]' or 'Name:'. The resulting MP3 starts at 00:00 of the video, so it can be muxed directly with ffmpeg (commands are returned). Consumes credits.

    Annotations the server declares

    • title: Subtitles to speech (video voiceover / dubbing)
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • text_to_speechConvert one text into one MP3 with one voice.No findings

    Why it is in this group

    • The description's first verb is "convert": a word for a change.
    Description, as the server wrote it
    Convert 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.

    Annotations the server declares

    • title: Text to speech
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • 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).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Speech-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.

    Annotations the server declares

    • title: Transcribe video/audio to SRT
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
Only reads 11Show 11 read-only tools
  • 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.No findings

    Why it is in this group

    • The name "get_account_status" says "get": a word for reading.
    Description, as the server wrote it
    Show 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.

    Annotations the server declares

    • title: Account status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • 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.Reads text others writeNo findings

    Why it is in this group

    • The name "get_job_detail" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "get" and "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Get 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).

    Annotations the server declares

    • title: Job segments (for Remotion / editors)
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_job_statusCheck a speech job created earlier.No findings

    Why it is in this group

    • The name "get_job_status" says "get": a word for reading.
    Description, as the server wrote it
    Check a speech job created earlier. Returns status (PENDING | SUCCESS | ERROR) and audio_url once SUCCESS. Never guess or fetch an audio URL before SUCCESS.

    Annotations the server declares

    • title: Job status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • 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.Reads text others writeNo findings

    Why it is in this group

    • The name "get_localization_status" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "status" and "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Status of localize_video jobs: current step, and when Completed the dubbed audio_url, final_video_url and translated SRT for each language.

    Annotations the server declares

    • title: Video dubbing status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_transcriptionCheck a transcribe_media job and get its SRT once finished.No findings

    Why it is in this group

    • The name "get_transcription" says "get": a word for reading.
    Description, as the server wrote it
    Check a transcribe_media job and get its SRT once finished.

    Annotations the server declares

    • title: Transcription status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_voice_detailsGet full metadata for one voice token: persona, use case, accent, pitch, styles, preview audio and credit cost.No findings

    Why it is in this group

    • The name "get_voice_details" says "get": a word for reading.
    Description, as the server wrote it
    Get full metadata for one voice token: persona, use case, accent, pitch, styles, preview audio and credit cost.

    Annotations the server declares

    • title: Voice details
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_favorite_voicesList the voices the user marked as favorites, in their saved order.No findings

    Why it is in this group

    • The name "list_favorite_voices" says "list": a word for reading.
    Description, as the server wrote it
    List the voices the user marked as favorites, in their saved order. Check this first when the user did not name a voice.

    Annotations the server declares

    • title: My favorite voices
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_languagesList every language supported by TTSForFree text-to-speech.No findings

    Why it is in this group

    • The name "list_languages" says "list": a word for reading.
    Description, as the server wrote it
    List every language supported by TTSForFree text-to-speech. Returns language codes to pass to list_voices.

    Annotations the server declares

    • title: List languages
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • 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.No findings

    Why it is in this group

    • The name "list_my_custom_voices" says "list": a word for reading.
    Description, as the server wrote it
    List 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.

    Annotations the server declares

    • title: My custom voices
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_recent_jobsList the user's most recent speech jobs with status and audio URLs, to reuse earlier audio instead of paying again.No findings

    Why it is in this group

    • The name "list_recent_jobs" says "list": a word for reading.
    Description, as the server wrote it
    List the user's most recent speech jobs with status and audio URLs, to reuse earlier audio instead of paying again.

    Annotations the server declares

    • title: Recent jobs
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_voicesSearch the AI voice catalog for one language.No findings

    Why it is in this group

    • The name "list_voices" says "list": a word for reading.
    Description, as the server wrote it
    Search 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 the user's favorite or custom voices when they exist.

    Annotations the server declares

    • title: Find voices
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write2
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

No check matched anything in these tool definitions. That is not a safety guarantee.

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http ttsforfree https://api.ttsforfree.com/mcp
claude mcp add --transport http ttsforfree https://api.ttsforfree.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__ttsforfree__list_languages",
      "mcp__ttsforfree__list_voices",
      "mcp__ttsforfree__get_voice_details",
      "mcp__ttsforfree__list_my_custom_voices",
      "mcp__ttsforfree__list_favorite_voices",
      "mcp__ttsforfree__get_account_status",
      "mcp__ttsforfree__get_job_status",
      "mcp__ttsforfree__list_recent_jobs",
      "mcp__ttsforfree__get_job_detail",
      "mcp__ttsforfree__get_transcription",
      "mcp__ttsforfree__get_localization_status"
    ],
    "ask": [
      "mcp__ttsforfree__add_favorite_voice",
      "mcp__ttsforfree__design_custom_voice",
      "mcp__ttsforfree__text_to_speech",
      "mcp__ttsforfree__multi_voice_to_speech",
      "mcp__ttsforfree__srt_to_speech",
      "mcp__ttsforfree__create_upload_url",
      "mcp__ttsforfree__transcribe_media",
      "mcp__ttsforfree__estimate_video_localization",
      "mcp__ttsforfree__localize_video"
    ],
    "deny": [
      "mcp__ttsforfree__remove_favorite_voice"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as ttsforfree. Review it before you use it.

Capability tags behind 2 rules
  • mcp__ttsforfree__get_job_detail untrusted-input
  • mcp__ttsforfree__get_localization_status untrusted-input

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.CalmNguyen/ttsforfree/verify?hash=a2ec938d0fca4cfd95e8d4fbd43ee1bbc121c87683cc20839dd436ed84e420e2" | jq -e '.changed == false'

Pinned hash a2ec938d0fca, from Oct 22, 2026, 17:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.CalmNguyen/ttsforfree/changes.xml

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Source: MCP Registry · repository. Synced Oct 22, 2026, 18:17 UTC.