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Skillssmalltv-mcp-tools

smalltv-mcp-tools

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Updated 10-16 06:45

About this skill

SmallTV MCP Tools

When the SmallTV Local MCP server is connected, prefer its tools over raw HTTP (curl, Python requests). The MCP tools handle connectivity, parameter encoding, multipart uploads, and safety blocking internally.

MCP Server Identity

  • Server name: smalltv-local-mcp
  • Required config: SMALLTV_IP — the device's LAN IP address
  • Transport: local (mcp-bash over stdio)

If the MCP tools are not available (server not connected), fall back to the raw HTTP patterns in the geekmagic-smalltv-ultra skill.

Tool Overview

Tool Purpose Safety
smalltv-get-device-info Verify connectivity and model via /v.json Read-only
smalltv-read Query status, config, file listings (GET only) Read-only
smalltv-write Change settings, display, system commands Write — some endpoints destructive
smalltv-upload-file Upload JPG/GIF from local filesystem Write (idempotent)
smalltv-upload-firmware Flash .bin firmware via /update Destructive — requires confirm=true

Tool Selection Rules

  1. Always call smalltv-get-device-info first — once per session, before any other tool. Confirms the device is reachable and is a SmallTV-Ultra (not a Pro or other model).
  2. Use smalltv-read for any status check or data retrieval: /v.json, /space.json, /city.json, /album.json, /filelist?dir=..., /wifi.json?q=1, /config.json. Write endpoints (/set, /wifisave, /delete) are blocked by this tool.
  3. Use smalltv-write to change settings or control the display. Common pattern: path: "/set?param=value". Returns "OK" on success.
  4. Use smalltv-upload-file for image/GIF uploads. Pass file_path (absolute local path) and dir ("/image/" for album, "/gif" for weather GIFs). Do not attempt file uploads through smalltv-write — its string body cannot carry binary data.
  5. Use smalltv-upload-firmware only when the user explicitly requests firmware flashing. Always set confirm: true only after explicit user approval.

Common Workflows

Check device status

smalltv-get-device-info  →  confirm model + firmware version
smalltv-read path="/space.json"  →  storage total/free
smalltv-read path="/filelist?dir=/image/"  →  uploaded images

Change a setting

smalltv-get-device-info  →  verify device
smalltv-write path="/set?brt=60"  →  set brightness to 60

Upload and display a custom image

smalltv-get-device-info  →  verify device
smalltv-read path="/space.json"  →  check free storage
smalltv-upload-file file_path="/tmp/dashboard.jpg" dir="/image/"
smalltv-write path="/set?img=/image/dashboard.jpg"
smalltv-write path="/set?theme=3"  →  switch to Photo Album theme

This is the key programmability pattern on stock firmware — render content as a 240x240 image locally, upload it, then display it. Animated GIFs work the same way.

Upload a weather screen GIF

smalltv-upload-file file_path="/tmp/icon.gif" dir="/gif"
smalltv-write path="/set?gif=/gif/icon.gif"

Weather GIFs must be exactly 80x80px.

Display a specific theme

smalltv-write path="/set?theme=3"
# Theme
1 Weather Clock Today
2 Weather Forecast
3 Photo Album
4 Time Style 1
5 Time Style 2
6 Time Style 3
7 Simple Weather Clock

Safety Rules

Destructive endpoints — require explicit user confirmation

Path Effect
/wifisave (empty) Wipes WiFi credentials — forces AP mode
/set?reset=1 Factory reset
/set?reboot=1 Immediate reboot
/set?clear=image Deletes ALL uploaded images
/set?clear=gif Deletes ALL uploaded GIFs
/delete?file={path} Permanent file deletion

Never pass these paths to smalltv-write without the user explicitly requesting the action.

Firmware flashing

smalltv-upload-firmware requires confirm: true. Bad firmware can brick the device. Before flashing:

  1. Verify model is SmallTV-Ultra via smalltv-get-device-info
  2. Record current firmware version
  3. Confirm the user has a stock .bin for rollback
  4. Obtain explicit user approval

Not supported by stock firmware

  • No text display endpoint. No /set?txt=, /set?text=, /set?message=. Do not probe for text endpoints — they do not exist.
  • To display custom text: render it as a 240x240 JPEG (e.g. Python+Pillow), upload with smalltv-upload-file, then display with smalltv-write.
  • No video, no audio, no touchscreen, no WebSocket/MQTT push.

Device IP Handling

All tools accept an optional device_ip parameter. Pass it if known to avoid relying on the server's SMALLTV_IP environment variable. Load the IP from .claude/geekmagic-smalltv-ultra.local.md when available (managed by the geekmagic-smalltv-ultra skill).

Reference

For detailed device documentation beyond MCP tool usage:

  • Complete HTTP API, settings, JSON endpoints: see the geekmagic-smalltv-ultra skill and its references/device-reference.md
  • Alternative firmware (bvweerd, ESPHome, Tasmota): see references/alternative-firmware-guide.md
  • Custom firmware development: see references/custom-firmware-guide.md
  • MCP server resources (attachable to context): smalltv-api-reference, smalltv-safety-guide