# NexusWindows for Antigravity (pypi · nexus-windows-antigravity)

Windows computer use in the background for Antigravity: UI Automation, Win32 messages, read back.

- Trust score: 75/100 (medium)
- Change this week: −3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- pypi · `nexus-windows-antigravity`: 75/100 (this document), [markdown](https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity.md), [page](https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity)

## Channel facts

- Registry: `pypi`
- Package: `nexus-windows-antigravity`
- Version: `3.6.0`
- Transport: `stdio`

## Trust breakdown

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. 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.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 1 of 33 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 71/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Cryptographically verified build provenance (signed, bound to pironjulien/NexusWindows-Antigravity).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 7 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 52/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1287 tokens (~257/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 43/100
  - Stability observed for 13 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% 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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the NexusWindows for Antigravity MCP server?

NexusWindows for Antigravity runs locally as a PyPI package, launched with uvx --python 3.14 nexus-windows-antigravity. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add pironjulien-nexus-windows-antigravity -- uvx --python 3.14 nexus-windows-antigravity
```

### Cursor

```json
{
  "mcpServers": {
    "pironjulien-nexus-windows-antigravity": {
      "command": "uvx",
      "args": [
        "--python",
        "3.14",
        "nexus-windows-antigravity"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pironjulien-nexus-windows-antigravity": {
      "command": "uvx",
      "args": [
        "--python",
        "3.14",
        "nexus-windows-antigravity"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pironjulien-nexus-windows-antigravity -- uvx --python 3.14 nexus-windows-antigravity
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pironjulien-nexus-windows-antigravity": {
      "type": "local",
      "command": [
        "uvx",
        "--python",
        "3.14",
        "nexus-windows-antigravity"
      ],
      "enabled": true
    }
  }
}
```

### Hermes

```yaml
mcp_servers:
  pironjulien-nexus-windows-antigravity:
    command: "uvx"
    args: ["--python", "3.14", "nexus-windows-antigravity"]
```

### Netclaw

```json
{
  "McpServers": {
    "pironjulien-nexus-windows-antigravity": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "--python",
        "3.14",
        "nexus-windows-antigravity"
      ]
    }
  }
}
```

### Other

```json
{
  "mcpServers": {
    "pironjulien-nexus-windows-antigravity": {
      "command": "uvx",
      "args": [
        "--python",
        "3.14",
        "nexus-windows-antigravity"
      ]
    }
  }
}
```

## 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 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 73, −6)

- [security regression] Source repository: pass → fail
- [functional regression] Security disclosure: pass → unverified

### 2026-10-31 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 78, +16)

- [security improvement] Malware scan: unverified → pass

### 2026-10-28 (score 62, 0)

- [security improvement] Malware scan: unverified → pass
- [functional] Package version: 3.4.3 → 3.6.0
- [functional] Package version: 3.4.3 → 3.5.0

### 2026-10-27 (score 62, +1)

- [functional] Package version: 3.2.8 → 3.4.3
- [functional] Package version: 3.2.8 → 3.4.2
- [functional] Package version: 3.2.8 → 3.4.1
- [functional] Package version: 3.2.8 → 3.3.1
- [functional] Package version: 3.2.8 → 3.3.0
- [functional] Package version: 3.2.8 → 3.2.10
- [functional] Package version: 3.2.8 → 3.2.9

### 2026-10-26 (score 61, 0)

- [functional] Package version: 3.1.7 → 3.2.8
- [functional] Package version: 3.1.7 → 3.2.7
- [functional] Package version: 3.1.7 → 3.2.6
- [functional] Package version: 3.1.7 → 3.2.5
- [functional] Package version: 3.1.7 → 3.2.3
- [functional] Package version: 3.1.7 → 3.2.2
- [functional] Package version: 3.1.7 → 3.2.1

## MCP tools (5)

### `windows` (~60 tokens)

List open windows: hwnd, title, process (the real application for UWP), position, foreground.
by_app=true: grouped by application.
Example: {"by_app": false}

Input parameters:

- `by_app` (boolean)
- `visible_only` (boolean)

### `look` (~231 tokens)

GOLDEN RULE: look → act in one batch, targets by label; never resend a batch without looking.
See a NAMED window (hwnd: number, title or process) WITHOUT bringing it to the front (covered ones too): one line
per element "[N] role "name" = "value" states @x,y"; image (WebP ≤ 2000 px) only if the tree is too thin, or with
capture_screenshot=true, annotate (numbers drawn) or zoom=box_2d (area enlarged); query filters; format="json":
compact JSON (box_2d 0-1000 per element). Same screen as the last image sent: not attached again. Unlocks a batch.
Example: {"hwnd": "Notepad", "query": "save"}

Input parameters:

- `annotate` (boolean)
- `capture_screenshot`
- `format` (string)
- `hwnd`
- `max_depth` (integer)
- `max_elements` (integer)
- `output_path`
- `query`
- `zoom`

### `act` (~365 tokens)

Act in ONE batch, in the background, on a NAMED window (hwnd), without reading the code: shared token, emergency stop and the user's pause are handled here.
Actions: click, double_click, right_click, type, set, clear, check, uncheck, select (option), expand, collapse, menu (path), key, scroll, drag, hover, wait (seconds, text), focus.
Target: target="Exact label", "#N", box_2d or x/y; ambiguous label refused. Steps ✓ = ~ ✗, status = the worst; follow `next`. Batch stopped on ~ or ✗, nothing more sent and no replay; look before resuming after an unknown outcome.
Outward actions (paying, sending, publishing, transferring, and the Enter key that would trigger them): `confirm: true` AND `accord: "<token>"` (on the step or as a parameter), returned by the first refusal that describes the exact action. Local destruction (permanent deletion, uninstalling, formatting, resetting): `confirm: true` alone. The user's explicit order = confirmation; your own initiative = ask first. Same batch without a look: refused.
foreground=True: real mouse/keyboard as a fallback only.
Example: {"hwnd": "Order", "steps": [{"action": "set", "target": "Name", "text": "Alice"}, {"action": "check", "target": "Accept"}, {"action": "click", "target": "Submit"}]}

Input parameters:

- `accord`
- `foreground` (boolean)
- `hwnd`
- `repeat` (boolean)
- `steps` (array, required)
- `then` (string)
- `time_budget` (number)

### `launch` (~168 tokens)

Open an application (name such as "notepad.exe", or path), a folder or a document, like a double-click; the
opening is read back. Settings page: app="ms-settings:display" (opened behind the user's window, read back).
Refused: web addresses http, https, ftp (web pages: nexus-browser). args: arguments of a .exe program (a file to
open…), never for a document, a folder or an address; also accepted after the program in `app`, a path with
spaces is never split. Chromium/Electron apps: files only, never a switch.
Example: {"app": "notepad.exe", "args": "C:\\Dev\\notes.txt"}

Input parameters:

- `app` (string, required)
- `args` (string)

### `window` (~88 tokens)

Manage a NAMED window (hwnd: number, title or process). action="close": close it cleanly (UI Automation, then
WM_CLOSE), the closing is read back; a "Save?" prompt, if any, is reported, never answered.
Example: {"action": "close", "hwnd": 123456}

Input parameters:

- `action` (string, required)
- `hwnd` (required)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity#diagnostics

## Score history

- 2026-11-05: 75
- 2026-11-04: 75
- 2026-11-03: 74
- 2026-11-02: 74
- 2026-11-01: 73
- 2026-10-31: 79
- 2026-10-30: 78
- 2026-10-29: 78
- 2026-10-28: 62
- 2026-10-27: 62
- 2026-10-26: 61
- 2026-10-25: 61
- 2026-10-24: 60
- 2026-10-23: 60

## Common questions

### What is the NexusWindows for Antigravity MCP server?

NexusWindows for Antigravity is an MCP server listed in the public MCP registry as io.github.pironjulien/nexus-windows-antigravity. Windows computer use in the background for Antigravity: UI Automation, Win32 messages, read back. This page covers its PyPI package (nexus-windows-antigravity).

### Is the NexusWindows for Antigravity MCP server safe to use?

NexusWindows for Antigravity scores 75 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. Its build provenance is signed and verified. 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 NexusWindows for Antigravity MCP server expose?

NexusWindows for Antigravity exposes 5 tools: windows, look, act, launch, window. Their descriptions and schemas cost roughly 912 tokens of context every time the server is loaded.

### Is the NexusWindows for Antigravity MCP server still maintained?

NexusWindows for Antigravity 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 NexusWindows for Antigravity MCP server under?

NexusWindows for Antigravity 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 NexusWindows for Antigravity MCP server?

VerifyMCP ran 15 checks on NexusWindows for Antigravity, covering Malware scan, Known CVEs, Install scripts, Dependency health and 11 more. One item could not be completed, a gap on our side rather than a finding about NexusWindows for Antigravity: Security disclosure. Endpoint Security and Transport & Reachability do not apply to a PyPI package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- PyPI project: https://pypi.org/project/nexus-windows-antigravity/
- Socket report: https://socket.dev/pypi/package/nexus-windows-antigravity
- Website: https://julienpiron.fr/nexuswindows/antigravity/
- Changelog RSS feed: https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity.xml
- Changelog JSON feed: https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity.json
- HTML version of this page: https://verifymcp.io/servers/pironjulien-nexus-windows-antigravity/nexus-windows-antigravity