# FreeTTS (remote · mcp.freetts.org)

Text to speech in 149 languages: MP3 links from any assistant. Free without an account.

- Trust score: 87/100 (high trust)
- Change this week: +1
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `mcp.freetts.org`: 87/100 (this document), [markdown](https://verifymcp.io/servers/org-freetts-mcp/mcp.md), [page](https://verifymcp.io/servers/org-freetts-mcp/mcp)
- npm · `@freetts/mcp`: 77/100, [markdown](https://verifymcp.io/servers/org-freetts-mcp/freetts-mcp.md), [page](https://verifymcp.io/servers/org-freetts-mcp/freetts-mcp)

## Channel facts

- Endpoint: `https://mcp.freetts.org/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.5`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 85/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1678 tokens (~119/item across 14 items; 7 tools + 7 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **Tool Coverage**: 99/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 97% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### How do I install the FreeTTS MCP server?

FreeTTS is a hosted endpoint at https://mcp.freetts.org/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http org-freetts-mcp 'https://mcp.freetts.org/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "org-freetts-mcp": {
      "url": "https://mcp.freetts.org/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "org-freetts-mcp": {
      "type": "http",
      "url": "https://mcp.freetts.org/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.org-freetts-mcp]
url = "https://mcp.freetts.org/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "org-freetts-mcp": {
      "type": "remote",
      "url": "https://mcp.freetts.org/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add org-freetts-mcp --url 'https://mcp.freetts.org/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  org-freetts-mcp:
    url: "https://mcp.freetts.org/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "org-freetts-mcp": {
      "Transport": "http",
      "Url": "https://mcp.freetts.org/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add org-freetts-mcp -t streamable-http -u 'https://mcp.freetts.org/mcp'
```

### Other

```json
{
  "mcpServers": {
    "org-freetts-mcp": {
      "type": "http",
      "url": "https://mcp.freetts.org/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-31 (score 87, 0)

- [security] Resource “player” now points somewhere else: ui://freetts/player-v2.html → ui://freetts/player-v4.html
- [functional] New resource “player-old-2”
- [functional] New resource “player-old-1”
- [functional] Server version: 1.1.0 → 1.1.5
- [cosmetic] “text_to_speech” added an optional parameter “rerender_of”
- [cosmetic] “text_to_speech” reworded the description of “text”
- [cosmetic] “text_to_speech” made “text” optional

### 2026-10-30 (score 87, +1)

- [security] Stability: 0.97 → pass
- [functional] First check of Capabilities: pass
- [functional] New resource “player”
- [functional] Server version: 1.0.9 → 1.1.0

### 2026-10-28 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-17 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (7)

### `list_voices` (~176 tokens)

List FreeTTS voices

List FreeTTS voices for a language or a search word, with the voice id to pass to text_to_speech. Says which voices are free and which need a FreeTTS PRO key (HD and Signature). Use it when the user names a language, accent or gender, or asks what voices exist.

Input parameters:

- `free_only` (boolean): Only voices that work without a FreeTTS key.
- `gender` (string): Filter by gender.
- `language` (string): Language or locale, like 'German', 'de-DE', 'Spanish (Mexico)' or 'en'. Empty lists every language.
- `limit` (integer): How many to return. Default 15.
- `search` (string): A word to match in the voice name or personality, like 'Andrew', 'calm' or 'news'.

### `suggest_voice` (~107 tokens)

Suggest a FreeTTS voice

Suggest three FreeTTS voices for a language and a use (audiobook, tutorial, ad, news, children's story, meditation, podcast), with a short reason each. Use it when the user has not named a voice.

Input parameters:

- `gender` (string)
- `language` (string, required): Language or locale, like 'English (US)', 'de-DE' or 'Portuguese (Brazil)'.
- `use` (string): What the audio is for, in a few words.

### `text_to_speech` (~350 tokens)

Text to speech (FreeTTS)

Convert text to spoken audio with a FreeTTS voice and return a download link to the MP3 (or WAV with a FreeTTS PRO key). Use it when the user wants text read aloud, narrated, or saved as an audio file. Without a FreeTTS key: standard voices, up to 2,000 characters a call, a short spoken "FreeTTS" tag at the end, file kept one hour. With a key: the account's plan (PRO: HD and Signature voices, no tag, 10,000 characters a call, files kept 30 days).

Input parameters:

- `format` (string): mp3 (default) or wav (FreeTTS PRO).
- `include_audio` (boolean): Also return the audio bytes in the result (large). Default false; the link is enough for most clients.
- `language` (string): Language of the text when no voice is given, like 'German' or 'pt-BR'.
- `rerender_of` (string): Read the same words as an earlier result again, in another voice or speed: the audio link (or id) that result returned, from the last 24 hours. The text is then not needed.
- `speed` (integer): Percent slower (negative) or faster (positive). Default 0.
- `text` (string): The text to read. Plain text; SSML is not needed. Required unless rerender_of is given.
- `voice` (string): A FreeTTS voice id from list_voices, like en-US-JennyNeural (a short name like 'Jenny' also works). If empty, a good standard voice for the language is chosen.

### `check_usage` (~56 tokens)

Check FreeTTS usage and plan

Show the FreeTTS plan behind this connection and what is left: characters today or this month, requests a minute, HD voices, watermark. Use it when the user asks about limits, their plan, or why a request was refused.

### `dialogue_to_speech` (~180 tokens)

Dialogue to speech (two or more voices)

Turn a script with several speakers into one audio file, a different FreeTTS voice per speaker, with a pause between lines. Write each line as 'Name: text'. Use it for two-host shows, interviews, scenes, language lessons with two speakers. Needs a connected FreeTTS PRO account.

Input parameters:

- `language` (string): Language of the lines when no voices are given.
- `pause_ms` (integer): Silence between lines in milliseconds. Default 600.
- `script` (string, required): Lines like 'Abd: Tonight we cook shakshuka.' one per line. Names before the colon.
- `voices` (object): Speaker name to FreeTTS voice id, like {"Abd": "en-US-AndrewNeural", "Guest": "en-US-EmmaNeural"}. Unnamed speakers get a voice each.

### `script_to_tracks` (~370 tokens)

Script to timed tracks (Script mode)

Record a script with exact timing, the way FreeTTS Script mode does: (pause 2) is exactly 2 seconds of silence, (beep), (ding) and (click) play a sound, 'CUE:' lines are read in a second voice, 'TRACK: name' starts a new audio file, 'NAME: line' makes a scene with a voice per character. Returns one file with everything plus one file per track. Use it for ear prompter tracks, voiceovers timed to footage, rehearsal tracks, workout or recipe step audio. Needs a connected FreeTTS PRO account.

Input parameters:

- `count_in` (string): Spoken count-in before each track, one number a second. Default none.
- `cue_voice` (string): Voice for CUE: lines and [bracketed] words. Default Aria.
- `line_voice` (string): Voice for the main lines: a steady voice name or id (Guy, Andrew, Ava, Aria, Jenny, Brian, Emma, Sonia, Ryan, Libby, Natasha, William, Clara, Liam...). Default Guy.
- `my_part` (string): In a scene, the character you play: their lines become timed gaps for you to say them.
- `paragraph_pause_ms` (integer): Silence after each paragraph. Default 1000.
- `script` (string, required): The script text. See freetts.org/text-to-speech-for-actors for the syntax.
- `sentence_pause_ms` (integer): Silence after each sentence. Default 500.
- `speed` (integer): Percent slower or faster for the main lines. Default 0.
- `track_end` (string): After the last line of each track: nothing, a long beep, or the word End. Default none.

### `transcribe_audio` (~108 tokens)

Transcribe audio (speech to text)

Turn a recording into text with FreeTTS speech to text. Give a public https URL to an audio file (mp3, wav, m4a, ogg, webm). Needs a connected FreeTTS PRO account.

Input parameters:

- `audio_url` (string, required): Public https URL of the audio file.
- `language` (string): Language of the recording, like 'en-US', 'de-DE', 'Arabic' or 'es', or 'auto' to detect it (default).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/org-freetts-mcp/mcp#diagnostics

## Score history

- 2026-11-05: 87
- 2026-11-04: 87
- 2026-11-03: 87
- 2026-11-02: 87
- 2026-11-01: 87
- 2026-10-31: 87
- 2026-10-30: 87
- 2026-10-29: 86
- 2026-10-28: 86
- 2026-10-27: 85
- 2026-10-26: 85
- 2026-10-25: 84
- 2026-10-24: 84
- 2026-10-23: 83
- 2026-10-22: 83
- 2026-10-21: 82
- 2026-10-20: 82
- 2026-10-19: 81
- 2026-10-18: 81
- 2026-10-17: 81
- 2026-10-16: 80
- 2026-10-15: 80
- 2026-10-14: 79
- 2026-10-13: 79
- 2026-10-12: 78
- 2026-10-11: 78
- 2026-10-10: 77
- 2026-10-08: 76
- 2026-10-05: 75
- 2026-10-04: 74

## Common questions

### What is the FreeTTS MCP server?

FreeTTS is an MCP server listed in the public MCP registry as org.freetts/mcp. Text to speech in 149 languages: MP3 links from any assistant. Free without an account. This page covers its hosted endpoint (https://mcp.freetts.org/mcp).

### Is the FreeTTS MCP server safe to use?

FreeTTS scores 87 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the FreeTTS MCP server expose?

FreeTTS exposes 7 tools: list_voices, suggest_voice, text_to_speech, check_usage, dialogue_to_speech, and 2 more. Their descriptions and schemas cost roughly 1,347 tokens of context every time the server is loaded.

### Does the FreeTTS MCP server require authentication?

No. We connected to FreeTTS without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the FreeTTS MCP server still maintained?

FreeTTS is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What did VerifyMCP test on the FreeTTS MCP server?

VerifyMCP ran 14 checks on FreeTTS, covering TLS certificate, Authorization, HTTPS, HSTS header and 10 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://mcp.freetts.org/mcp
- Repository: https://github.com/freetts/mcp
- Website: https://freetts.org/developers/mcp
- Changelog RSS feed: https://verifymcp.io/servers/org-freetts-mcp/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/org-freetts-mcp/mcp/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/org-freetts-mcp/mcp.json
- HTML version of this page: https://verifymcp.io/servers/org-freetts-mcp/mcp