# Nova Inbox Agent by Nova (CIVAI) (remote · nova.civai.co)

Read and send mail from your Nova Inbox (@nova.civai.co) for OTPs, directory signups, and inbound m…

- Trust score: 76/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-25

## Components

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

## Channel facts

- Endpoint: `https://nova.civai.co/mcp/agents/nova-inbox-agent`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## 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 2026-09-25.

- **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**: 80/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 526 tokens (~75/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 13/100
  - Stability observed for 4 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**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "nova_inbox__compose_message" implies "send" and declares no destructiveHint at all, which the MCP spec reads as destructive by default.
  - An AI judge read all 7 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 Nova Inbox Agent by Nova (CIVAI) MCP server?

Nova Inbox Agent by Nova (CIVAI) is a hosted endpoint at https://nova.civai.co/mcp/agents/nova-inbox-agent, 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-nova-inbox-agent 'https://nova.civai.co/mcp/agents/nova-inbox-agent'
```

### Cursor

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

### VS Code

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

### Codex

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

### opencode

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

### OpenClaw

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

### Hermes

```yaml
mcp_servers:
  co-civai-nova-nova-inbox-agent:
    url: "https://nova.civai.co/mcp/agents/nova-inbox-agent"
```

### Netclaw

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

### Vellum

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

### Other

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

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.

### 2026-09-25 (score 76, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-22 (score 75, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-21 (score 74)

First indexed and scored.

## MCP tools (7)

### `nova_inbox__list_messages` (~81 tokens)

List messages in the signed-in user's Nova Inbox (@nova.civai.co).

Input parameters:

- `limit` (integer): Max messages to return (1–50). Default 10.
- `query` (string): Optional filter on subject or from address (case-insensitive substring).
- `unread_only` (boolean): If true, only unread inbound messages.

### `nova_inbox__read_message` (~62 tokens)

Read full body of one Nova Inbox message by id or list index (includes attachment metadata).

Input parameters:

- `index` (integer): 0-based index from the latest list_messages result.
- `message_id` (string): Nova Inbox message id from list_messages.

### `nova_inbox__list_thread` (~69 tokens)

List all messages in an email thread (inbound + outbound), oldest first.

Input parameters:

- `message_id` (string): Any message id in the thread (from list_messages or read_message).
- `thread_key` (string): Thread key from list_messages/read_message (alternative to message_id).

### `nova_inbox__get_attachment` (~72 tokens)

Download one email attachment as base64 (by drive_id or index on the message).

Input parameters:

- `drive_id` (string): Drive id from message attachments metadata.
- `index` (integer): 0-based attachment index on the message.
- `message_id` (string, required): Message id that owns the attachment.

### `nova_inbox__get_inbox_address` (~33 tokens)

Return the user's Nova Inbox email address (e.g. user@nova.civai.co).

### `nova_inbox__compose_message` (~171 tokens)

Send outbound email from the user's @nova.civai.co address (deterministic; no LLM draft).

Input parameters:

- `attachment_drive_ids` (array): Workspace Drive file ids to attach (max 5, 2 MB each).
- `attachments` (array): Inline attachments for MCP hosts without Drive (max 5, 2 MB each).
- `html` (string): Optional HTML body (sanitized subset). Used when present.
- `reply_to_id` (string): Nova Inbox storage id of the message being replied to (threads the send).
- `subject` (string): Email subject. Required for new mail; optional when reply_to_id is set.
- `text` (string): Plain-text body. Required if html is omitted.
- `to` (string, required): Recipient email address.

### `nova_inbox__converse` (~38 tokens)

Reply conversationally when the request is ambiguous or needs clarification.

Input parameters:

- `reply_hint` (string): Optional hint for the conversational reply.

## Diagnostics

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

## Score history

- 2026-09-25: 76
- 2026-09-24: 76
- 2026-09-23: 75
- 2026-09-22: 75
- 2026-09-21: 74

## Common questions

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

Nova Inbox Agent by Nova (CIVAI) is an MCP server listed in the public MCP registry as co.civai.nova/nova-inbox-agent. Read and send mail from your Nova Inbox (@nova.civai.co) for OTPs, directory signups, and inbound m… This page covers its hosted endpoint (https://nova.civai.co/mcp/agents/nova-inbox-agent).

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

Nova Inbox Agent 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 Nova Inbox Agent by Nova (CIVAI) MCP server expose?

Nova Inbox Agent by Nova (CIVAI) exposes 7 tools: nova_inbox__list_messages, nova_inbox__read_message, nova_inbox__list_thread, nova_inbox__get_attachment, nova_inbox__get_inbox_address, and 2 more. Their descriptions and schemas cost roughly 526 tokens of context every time the server is loaded.

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

Yes. Nova Inbox Agent 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 Nova Inbox Agent by Nova (CIVAI) MCP server still maintained?

Nova Inbox Agent by Nova (CIVAI) is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://nova.civai.co/mcp/agents/nova-inbox-agent
- Website: https://nova.civai.co/agent/nova-inbox-agent
- Changelog RSS feed: https://verifymcp.io/servers/co-civai-nova-nova-inbox-agent/mcp-agents-nova-inbox-agent.xml
- Changelog JSON feed: https://verifymcp.io/servers/co-civai-nova-nova-inbox-agent/mcp-agents-nova-inbox-agent.json
- HTML version of this page: https://verifymcp.io/servers/co-civai-nova-nova-inbox-agent/mcp-agents-nova-inbox-agent