FreeTTS
NPM · @FREETTS/MCP · 2 COMPONENTS
Text to speech in 149 languages: MP3 links from any assistant. Free without an account.
Available components
Last scanned (16 hours ago)
Scores higher than 55% of npm servers
Category Design and Media
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security81
- No malware found by supply-chain analysis.Pass
- CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available. View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 30 of 93 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 35 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability83
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1535 tokens (~139/item across 11 items; 7 tools + 4 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management77
- Stability observed for 23 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage99
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 97% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Checks we ran (16)
- Malware scan
- Known CVEs
- Install scripts
- Dependency health
- Source repository
- Provenance
- License
- Maintenance
- Security disclosure
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
Does not apply to this package (2)
- Endpoint SecurityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
- Transport & ReachabilityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
The score does not measure everything. What the score does not measure →
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 −3
- Stability: pass → 0.77 functional
- 30 Oct 26 0
- Stability: 0.97 → pass security
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 24 Oct 26 −5
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: pass → fail ▼ security
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 26 +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.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/@freetts/mcp@1.0.5
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 1 finding
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-mrhx-c7xc-m3w5 | CVE-2023-54404 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 93 packages
| Packages resolved | 93 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_usage Check FreeTTS usage and plan ~56
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
dialogue_to_speech Dialogue to speech (two or more voices) ~180
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.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of the lines when no voices are given. |
| pause_ms | integer | – | Silence between lines in milliseconds. Default 600. |
| script | string | yes | 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. |
No output schema declared.
No examples provided.
list_voices List FreeTTS voices ~176
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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'. |
No output schema declared.
No examples provided.
script_to_tracks Script to timed tracks (Script mode) ~370
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | 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. |
No output schema declared.
No examples provided.
suggest_voice Suggest a FreeTTS voice ~107
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.
| Name | Type | Req | Description |
|---|---|---|---|
| gender | string | – | – |
| language | string | yes | Language or locale, like 'English (US)', 'de-DE' or 'Portuguese (Brazil)'. |
| use | string | – | What the audio is for, in a few words. |
No output schema declared.
No examples provided.
text_to_speech Text to speech (FreeTTS) ~293
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).
| Name | Type | Req | Description |
|---|---|---|---|
| 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'. |
| speed | integer | – | Percent slower (negative) or faster (positive). Default 0. |
| text | string | yes | The text to read. Plain text; SSML is not needed. |
| 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. |
No output schema declared.
No examples provided.
transcribe_audio Transcribe audio (speech to text) ~108
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.
| Name | Type | Req | Description |
|---|---|---|---|
| audio_url | string | yes | 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). |
No output schema declared.
No examples provided.
How do I install the FreeTTS MCP server?
FreeTTS runs locally as an npm package, launched with npx -y @freetts/mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @freetts/mcp
claude mcp add org-freetts-mcp -- npx -y @freetts/mcp
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 npm package (@freetts/mcp).
Is the FreeTTS MCP server safe to use?
FreeTTS scores 77 out of 100 on VerifyMCP. We recorded 1 known advisory against it as of 5 November 2026. It declares no install or post-install scripts. 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 1,290 tokens of context every time the server is loaded.
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 licence is the FreeTTS MCP server under?
FreeTTS declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.
What did VerifyMCP test on the FreeTTS MCP server?
VerifyMCP ran 16 checks on FreeTTS, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.