# MsgPack (LsMsgPack)

Decode MsgPack using LsMsgPack schemas and type IDs, or read values from variables while debugging.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed · ★ 36
- Author: mlsomers
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/mlsomers/LsMsgPack/tree/HEAD/lsmsgpackmcpserver
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/mcp/msgpack-lsmsgpack

## What it does

This MCP server is for inspecting MsgPack during debugging. It decodes data with LsMsgPack schemas and type IDs, and can read values from variables. That gives you a way to examine a message or check a value in your application.

The LsMsgPack project also contains .NET serializers and MsgPack inspection tools, but this server’s description focuses on schema-aware decoding and variable reads. Don’t treat it as a serializer or a way to edit data. There’s no ready-to-run Claude Code install command here.

## Install

### Claude Code (native platform)

**Install**
- The MCP registry has no launch command for it: see the repository README

## When to use it
- decode a MsgPack payload with an LsMsgPack schema
- read a MsgPack value from a variable while debugging
- inspect data associated with a type ID

## Example prompts
- Decode this MsgPack payload using its LsMsgPack schema.
- Read the MsgPack value from this variable while debugging.
- Explain how the type IDs relate to this message’s data.

## Similar
- [Front-End Checklist](https://affpapa.org/en/nevibecode/mcp/front-end-checklist.md) — MCP server · ★ 74559
- [Keploy](https://affpapa.org/en/nevibecode/mcp/keploy.md) — MCP server · ★ 18727
- [SeleniumBase MCP](https://affpapa.org/en/nevibecode/mcp/seleniumbase-mcp.md) — MCP server · ★ 13169
- [mobile-mcp](https://affpapa.org/en/nevibecode/mcp/mobile-mcp.md) — MCP server · ★ 9946
- [e2e](https://affpapa.org/en/nevibecode/mcp/e2e.md) — MCP server · ★ 11912
- [mockserver](https://affpapa.org/en/nevibecode/mcp/mockserver.md) — MCP server · ★ 4996

---
NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md