Media

MIDI 1.0 / MIDI 2.0 UMP Universal MIDI Packet, Channel Voice 2.0, SysEx 7/8-bit Wire-Protocol Decoder & Byte Counter

Decode a MIDI 1.0 bytestream (status bytes, running status, System Common / Real Time, System Exclusive) or a MIDI 2.0 Universal MIDI Packet stream — message types 0x0 Utility, 0x1 System, 0x2 MIDI 1.0 Channel Voice, 0x3 SysEx 7-bit, 0x4 MIDI 2.0 Channel Voice with 16-bit velocity and the 7.9 pitch attribute, 0x5 SysEx 8-bit / Mixed Data, 0xD Flex Data, 0xF UMP Stream — with per-packet field tables, byte/word/packet counts, reserved-field validation, SysEx continuation state machines, and MIDI 1.0 ⇄ UMP translation.

html· HTML resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'http://127.0.0.1:3003/en/api/tools/midi-1-0-midi-2-0-ump-universal-midi-packet-cib-channel-voice-2-0-sysex-7-bit-8-bit-byte-counter' \
  -H 'Content-Type: application/json' \
  -d '{"hexInput":"40 90 3C 01 D2 00 0B 00 41 C1 01 00 0A 00 00 00 20 B0 07 64 30 04 7E 7F 09 01 00 00 10 F8 00 00 00 10 12 34 50 03 03 90 FF 00 00 00 00 00 00 00 00 00 00 00","protocol":"ump","translateToOther":false,"groupNumber":0}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST http://127.0.0.1:3003/en/api/tools/midi-1-0-midi-2-0-ump-universal-midi-packet-cib-channel-voice-2-0-sysex-7-bit-8-bit-byte-counter

Parameters

Name	Type	Required	Description
hexInput	textarea	Yes	—
protocol	select	No	—
translateToOther	checkbox	No	—
groupNumber	number	No	—

Response format

HTML result

JSON

{
  "result": "<div>Processed HTML content</div>",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-midi-1-0-midi-2-0-ump-universal-midi-packet-cib-channel-voice-2-0-sysex-7-bit-8-bit-byte-counter": {
      "name": "midi-1-0-midi-2-0-ump-universal-midi-packet-cib-channel-voice-2-0-sysex-7-bit-8-bit-byte-counter",
      "description": "Decode a MIDI 1.0 bytestream (status bytes, running status, System Common / Real Time, System Exclusive) or a MIDI 2.0 Universal MIDI Packet stream — message types 0x0 Utility, 0x1 System, 0x2 MIDI 1.0 Channel Voice, 0x3 SysEx 7-bit, 0x4 MIDI 2.0 Channel Voice with 16-bit velocity and the 7.9 pitch attribute, 0x5 SysEx 8-bit / Mixed Data, 0xD Flex Data, 0xF UMP Stream — with per-packet field tables, byte/word/packet counts, reserved-field validation, SysEx continuation state machines, and MIDI 1.0 ⇄ UMP translation.",
      "baseUrl": "http://127.0.0.1:3003/mcp/sse?toolId=midi-1-0-midi-2-0-ump-universal-midi-packet-cib-channel-voice-2-0-sysex-7-bit-8-bit-byte-counter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "midi-1-0-midi-2-0-ump-universal-midi-packet-cib-channel-voice-2-0-sysex-7-bit-8-bit-byte-counter",
    "arguments": {
  "hexInput": "40 90 3C 01 D2 00 0B 00 41 C1 01 00 0A 00 00 00 20 B0 07 64 30 04 7E 7F 09 01 00 00 10 F8 00 00 00 10 12 34 50 03 03 90 FF 00 00 00 00 00 00 00 00 00 00 00",
  "protocol": "ump",
  "translateToOther": false,
  "groupNumber": 0
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]