YarnGPT MCP by Nova (CIVAI)
co.civai.nova/mcp-bgpt-yarngptnova.civai.costreamable-httpv1.0.0Scanned
Turn text into speech with Nigerian and African-accented voices.
2 tools: 1 change things and 1 only read.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
1 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →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.
2 tools
Changes things 1Claude Code: ask
text_to_speechConvert text to speech with YarnGPT.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 text to speech with YarnGPT. Pass text (required, max 2000 characters) and voice (required). response_format defaults to mp3 (mp3, wav, opus, or flac). Use list_voices to discover voices. API key comes from global_variables.
Only reads 1Show 1 read-only tool
list_voicesList all available YarnGPT voices with names and descriptions.No findings
Why it is in this group
- The name "list_voices" says "list": a word for reading.
Description, as the server wrote it List all available YarnGPT voices with names and descriptions. Use before text_to_speech when the user asks which voices exist or which voice to pick. Voices: Idera, Emma, Zainab, Osagie, Wura, Jude, Chinenye, Tayo, Regina, Femi, Adaora, Umar, Mary, Nonso, Remi, Adam.
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 untrusted-input or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- 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.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http bgpt-yarngpt https://nova.civai.co/mcp/agents/mcp-bgpt-yarngptclaude mcp add --transport http bgpt-yarngpt https://nova.civai.co/mcp/agents/mcp-bgpt-yarngptRun 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.
{
"permissions": {
"allow": [
"mcp__bgpt-yarngpt__list_voices"
],
"ask": [
"mcp__bgpt-yarngpt__text_to_speech"
],
"deny": []
}
}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 bgpt-yarngpt. Review it before you use it.
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/co.civai.nova/mcp-bgpt-yarngpt/verify?hash=5bbf478e9d764226edb550f483674470b913effc2f66f1212b2d61315325d725" | jq -e '.changed == false'Pinned hash 5bbf478e9d76, from Nov 2, 2026, 09:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/co.civai.nova/mcp-bgpt-yarngpt/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/co.civai.nova/mcp-bgpt-yarngpt)Source: MCP Registry. Synced Nov 2, 2026, 09:17 UTC.