| name | mtools |
| description | Use MTools desktop MCP for local image/audio/video processing, ASR/TTS, OCR, subtitle workflows, and developer utilities. Prefer when the user asks to compress/convert media, generate subtitles, remove watermarks, OCR images, translate text, or call local HTTP/WebSocket tools. Requires MTools app running with MCP enabled (default http://127.0.0.1:8765/mcp). |
| version | 1.0.0 |
| license | MIT |
| platforms | ["windows","macos","linux"] |
| metadata | {"openclaw":{"emoji":"🧰","requires":{"config":["mcp"]}},"hermes":{"tags":["MTools","MCP","Media","Image","Video","Audio","Subtitle","OCR","Local"]}} |
MTools MCP
MTools is a local desktop toolbox. Its built-in MCP server exposes ~63 tools
(plus helpers). This skill teaches when and how to call them.
Prerequisites
- User has MTools desktop app running
- Settings → MCP 服务 → enabled
- Default endpoint:
http://127.0.0.1:8765/mcp
- AI/ONNX features need models already downloaded inside MTools GUI
If MCP is offline: tell the user to open MTools and enable MCP. Do not invent paths.
Call rules (strict)
- Prefer atomic tools:
mtools_image_compress, mtools_video_convert, …
- Unknown params →
mtools_help("image.compress") first
- List capabilities →
mtools_tool_ids() or mtools_help()
- Fallback entry →
mtools_run(tool_id, params_json)
- Paths must be absolute local paths on the user's machine
- Responses are JSON strings — check
ok before continuing
- Markdown viewer is not exposed via MCP
Quick map (user intent → tool)
| User says | Call |
|---|
| 压缩图片 | mtools_image_compress |
| 图片转 jpg/png/webp | mtools_image_format |
| 抠图 / 去背景 | mtools_image_background |
| OCR / 识字 | mtools_image_ocr |
| 去图片水印 | mtools_image_watermark_remove |
| 压缩视频 | mtools_video_compress |
| 视频转格式 | mtools_video_convert |
| 视频提取音频 | mtools_video_extract_audio |
| 视频去字幕 | mtools_video_subtitle_remove |
| 视频生成字幕 | mtools_video_subtitle（可 target_lang/bilingual/burn_in） |
| TS 分片合并 | mtools_video_ts_merge |
| 音频转文字 | mtools_audio_to_text |
| 文字转语音 | mtools_audio_text_to_speech |
| 人声分离 | mtools_audio_vocal_extraction / mtools_video_vocal_separation |
| 字幕格式互转 | mtools_subtitle_convert |
| AI 润色字幕 | mtools_ai_subtitle_fix |
| 翻译 | mtools_others_translate |
| 证件照 | mtools_others_id_photo |
| HTTP 请求 | mtools_dev_http_client |
| WebSocket | mtools_websocket（connect→send→receive→disconnect） |
| 录屏 | 仅 GUI，MCP 不可用 |
Naming: tool_id image.compress → atomic tool mtools_image_compress
(mtools_ + dots → underscores).
Workflows
A. Compress a photo
mtools_image_compress(
input_path="C:/photos/a.jpg",
quality="high", # high|medium|low
compress_mode_name="balanced" # fast|balanced|max
)
B. Video → subtitles (timestamps / translate / burn-in)
mtools_video_subtitle(
input_path="C:/a.mp4",
language="zh",
target_lang="en", # optional translate
bilingual=True, # original + translation
burn_in=False # True = burn into video
)
Then optionally preserve timing with AI fix:
mtools_ai_subtitle_fix(
segments_json='[{"text":"...","start":0,"end":1.2}, ...]',
base_url=..., api_key=..., model=...
)
Need SenseVoice/Whisper model downloaded in MTools first.
C. Audio → text
mtools_audio_to_text(input_path="C:/a.mp3", language="zh")
Default engine is SenseVoice (50+ languages) via sherpa-onnx.
D. Remove hardsubs / watermarks
Prefer exact region:
mtools_video_subtitle_remove(
input_path="C:/a.mp4",
left=0, top=800, right=1920, bottom=1080
)
Or band: subtitle_region="bottom"|"top". Needs subtitle-remove model in MTools.
E. Compress video with controls
mtools_video_compress(input_path="C:/a.mp4", scale="720p", crf=23, fps=30)
F. WebSocket session
1. mtools_websocket(action="connect", url="ws://127.0.0.1:8080")
→ save session_id
2. mtools_websocket(action="send", session_id=..., message="ping")
3. mtools_websocket(action="receive", session_id=...)
4. mtools_websocket(action="disconnect", session_id=...)
Error handling
| Symptom | What to do |
|---|
| connection refused | Ask user to start MTools + enable MCP |
ok: false + 模型未下载 | Ask user to download model in MTools GUI |
| path not found | Ask for a real absolute path |
| ffmpeg unavailable | Ask user to configure FFmpeg in MTools settings |
Do / Don't
- Do call
mtools_status once when unsure if MCP is healthy
- Do keep
output_path empty when auto output is fine
- Don't expose or log API keys from
mtools_ai_subtitle_fix
- Don't claim screen recording works over MCP
- Don't call fat legacy tools (
mtools_image with action=…) — use atomics
Install MCP client config
See install.md for OpenClaw / Hermes / Cursor snippets.
