# YarnGPT MCP by Nova (CIVAI) (remote · nova.civai.co)

Turn text into speech with Nigerian and African-accented voices.

- Trust score: 76/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `nova.civai.co`: 76/100 (this document), [markdown](https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt.md), [page](https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt)

## Channel facts

- Endpoint: `https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt`
- Transports: `streamable-http`
- Auth: `required (not validated)`
- Version: `1.0.0`

## 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**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, but the challenge carries no valid RFC 9728 metadata, so a client cannot discover where to get a token.
  - 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**: 76/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 333 tokens (~111/item across 3 items; 2 tools + 1 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% 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 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 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.

## Install

### How do I install the YarnGPT MCP by Nova (CIVAI) server?

YarnGPT MCP by Nova (CIVAI) is a hosted endpoint at https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt, 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 co-civai-nova-mcp-bgpt-yarngpt 'https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt'
```

### Cursor

```json
{
  "mcpServers": {
    "co-civai-nova-mcp-bgpt-yarngpt": {
      "url": "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "co-civai-nova-mcp-bgpt-yarngpt": {
      "type": "http",
      "url": "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt"
    }
  }
}
```

### Codex

```toml
[mcp_servers.co-civai-nova-mcp-bgpt-yarngpt]
url = "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "co-civai-nova-mcp-bgpt-yarngpt": {
      "type": "remote",
      "url": "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add co-civai-nova-mcp-bgpt-yarngpt --url 'https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  co-civai-nova-mcp-bgpt-yarngpt:
    url: "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt"
```

### Netclaw

```json
{
  "McpServers": {
    "co-civai-nova-mcp-bgpt-yarngpt": {
      "Transport": "http",
      "Url": "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt"
    }
  }
}
```

### Vellum

```bash
assistant mcp add co-civai-nova-mcp-bgpt-yarngpt -t streamable-http -u 'https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt'
```

### Other

```json
{
  "mcpServers": {
    "co-civai-nova-mcp-bgpt-yarngpt": {
      "type": "http",
      "url": "https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt"
    }
  }
}
```

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.

### 2026-11-04 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 75, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-02 (score 75)

First indexed and scored.

## MCP tools (2)

### `text_to_speech` (~192 tokens)

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.

Input parameters:

- `notification_message` (string): Short user-facing sentence for this action if the follow-up reply fails. Plain text only; do not mention template syntax or variable names.
- `text` (string, required): The text to convert to speech. Max 2000 characters.
- `voice` (string, required): Voice character to use. One of: Idera, Emma, Zainab, Osagie, Wura, Jude, Chinenye, Tayo, Regina, Femi, Adaora, Umar, Mary, Nonso, Remi, Adam. Default Idera if unsure; call list_voices for description…

### `list_voices` (~120 tokens)

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.

Input parameters:

- `notification_message` (string): Short user-facing sentence for this action if the follow-up reply fails. Plain text only; do not mention template syntax or variable names.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt#diagnostics

## Score history

- 2026-11-05: 76
- 2026-11-04: 76
- 2026-11-03: 75
- 2026-11-02: 75

## Common questions

### What is the YarnGPT MCP by Nova (CIVAI) server?

YarnGPT MCP by Nova (CIVAI) is listed in the public MCP registry as co.civai.nova/mcp-bgpt-yarngpt. Turn text into speech with Nigerian and African-accented voices. This page covers its hosted endpoint (https://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt).

### Is the YarnGPT MCP by Nova (CIVAI) server safe to use?

YarnGPT MCP by Nova (CIVAI) scores 76 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 YarnGPT MCP by Nova (CIVAI) server expose?

YarnGPT MCP by Nova (CIVAI) exposes 2 tools: text_to_speech, list_voices. Their descriptions and schemas cost roughly 312 tokens of context every time the server is loaded.

### Does the YarnGPT MCP by Nova (CIVAI) server require authentication?

Yes. YarnGPT MCP by Nova (CIVAI) asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the YarnGPT MCP by Nova (CIVAI) server still maintained?

YarnGPT MCP by Nova (CIVAI) 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 YarnGPT MCP by Nova (CIVAI) server?

VerifyMCP ran 13 checks on YarnGPT MCP by Nova (CIVAI), covering TLS certificate, Authorization, HTTPS, HSTS header and 9 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://nova.civai.co/mcp/agents/mcp-bgpt-yarngpt
- Website: https://nova.civai.co/agent/mcp-bgpt-yarngpt
- Changelog RSS feed: https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt.xml
- Changelog JSON feed: https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt.json
- HTML version of this page: https://verifymcp.io/servers/co-civai-nova-mcp-bgpt-yarngpt/mcp-agents-mcp-bgpt-yarngpt