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Descripción del creador (original en inglés)
Decodes MsgPack (LsMsgPack schemas, type ids) as text and reads it from variables while debugging.
Estos tres nunca se combinan en una sola puntuación: las opiniones, las mediciones y la popularidad son cosas distintas.
Todavía no escribimos un resumen sencillo para este. Abajo están los datos que leímos del registro.
Elige la app de IA que usas y copia la configuración.
¿Qué app usas?
Elige tu app arriba. La recordamos, así que la próxima vez el botón dirá “Instalar en …”.
Abre Claude Desktop → Settings → Developer → Edit Config y pega esto en claude_desktop_config.json
{
"mcpServers": {
"lsmsgpack": {
"command": "dnx",
"args": [
"LsMsgPack.Mcp",
"--yes"
]
}
}
}Ejecuta esto en tu terminal
claude mcp add lsmsgpack -- dnx LsMsgPack.Mcp --yesPégalo en .cursor/mcp.json de tu proyecto, o en ~/.cursor/mcp.json
{
"mcpServers": {
"lsmsgpack": {
"command": "dnx",
"args": [
"LsMsgPack.Mcp",
"--yes"
]
}
}
}Tu navegador te pide permiso para abrir la app; luego la app muestra la configuración y te pide confirmar. Los valores de las claves quedan vacíos para que los completes tú.
Pégalo en .vscode/mcp.json de tu proyecto
{
"servers": {
"lsmsgpack": {
"type": "stdio",
"command": "dnx",
"args": [
"LsMsgPack.Mcp",
"--yes"
]
}
}
}Tu navegador te pide permiso para abrir la app; luego la app muestra la configuración y te pide confirmar. Los valores de las claves quedan vacíos para que los completes tú.
Este se ejecuta en tu computadora, y ChatGPT solo puede conectarse a servidores en internet. Elige otra app.
Tu elección se guarda en una cookie en este dispositivo; no necesitas cuenta.
Esta configuración se genera a partir de la ficha del creador en el registro. Si el README dice otra cosa, sigue el README.
Se ejecuta en tu computadora; la lista de herramientas aparece en tu app de IA después de instalarlo.
Revisamos información que cualquiera puede ver; no hemos leído el código. Las revisiones que no aplican no se cuentan. · Revisado el 6 nov 2026
El nombre en el registro se verificó con la cuenta de GitHub mlsomers, dueña del repo
Todavía no hemos leído este repo en GitHub
Todavía no hemos leído este repo en GitHub
Este se ejecuta en tu computadora; no hay endpoint en internet
Se ejecuta en tu computadora y usa ajustes locales en su lugar
Se ejecuta en tu computadora; solo podemos leer listas de herramientas de endpoints en internet
Comparado con todos los servidores activos de esta categoría en el registro. Las estrellas solo cuentan cuando quien lo publica es dueño del repo.
Superó 1 de 1 revisiones básicas aplicables. No hemos leído el código. Antes de agregar una clave o un token, revisa qué acceso pide el servidor y usa una clave que tenga solo los permisos que necesitas.
El registro no indica ninguna clave obligatoria, aunque algunos servidores te piden iniciar sesión la primera vez que los usas.
Se ejecuta en tu computadora. Tu app de IA lo inicia cuando hace falta, y los datos no pasan por los servidores del creador (a menos que el propio servidor llame a un servicio en línea).
El repo de GitHub cambió por última vez –, y la última versión (2026.11.6.1) llegó al registro hoy.
Las apps compatibles con MCP, como Claude Desktop, Claude Code, Cursor y VS Code. También necesitas .NET en tu computadora.
En la misma categoría: GitHub, Desktop Commander, Cloudflare MCP
Servidores de la misma categoría hechos por otros creadores, ordenados por estrellas.
Cómo leer una tarjeta:★ Estrellas de GitHubiTres pilares: reseñas · revisiones · usoiActualizado = fecha en que se publicó la última versión en el registroi
Connect AI assistants to GitHub - manage repos, issues, PRs, and workflows through natural language.
MCP server for terminal commands, file operations, and process management
Cloudflare MCP servers
Copiado tal cual del repo del creador. PopNx MCP no lo ha revisado ni lo respalda. Se quitaron HTML, imágenes y scripts. Los enlaces llevan fuera de este sitio.
MsgPack for AI agents. An MCP server and a command line tool that decode MsgPack data into text an AI (or a person in a terminal) can read, and that read the bytes of a variable of a program paused in the debugger of VS Code or Visual Studio.
Language models read text, not bytes. Hex or base64 costs several tokens per byte, and decoding it by hand is slow and error-prone. Some data can't be decoded from the bytes at all: LsMsgPack's indexed schema writes property names as indexes, and a schema reference holds only the 16-byte id of the schema. This tool decodes the data with the LsMsgPack library itself (the code of MsgPack Explorer) and writes it as JSON with comments:
MsgPack "doc1" 247 bytes from payload (byte[], Launch Api).
Structure: indexed schema (inline, 3 types) followed by the body No errors, 0 warnings or comments. Schema (inline): type ids and property ids in the body are indexes into these lists. #0 Invoice: Id, Customer, Billing, Lines, Date, Reference, Tags #1 Address: Street, Number, City #2 Line: Product, Quantity, Price
Objects (JSON with // comments: a type name comes from a type id, a name with ~ is inferred from the schema; dictionary keys that are not strings are not quoted): { // Invoice~ "Id": 1234, "Customer": "Alice", "Billing": { "Street": "Main street", "Number": 12, "City": "Amsterdam" }, // Address~ "Lines": [ // 2 items { "Product": "Apples", "Quantity": 3, "Price": 1.25 }, // Line~, Price: decimal { "Product": "Pears", "Quantity": 2, "Price": 0.99 } // Line~, Price: decimal ], "Date": "2026-10-05T12:30:00Z", // timestamp "Reference": "5bad8f0fcbd99f46a16570867728950e", // bin, 16 bytes, as Guid 0f8fad5b-d9cb-469f-a165-70867728950e "Tags": ["fruit", "fresh"] // 2 items }
It reads any MsgPack, not only data written by LsMsgPack. Errors come with their offset, and the values read after an error are marked.
Requires the .NET runtime 8 or later.
dotnet tool install -g LsMsgPack.Mcp # the command is lsmsgpack-mcp
From source: dotnet publish LsMsgPackMcpServer -c Release -o , then run dotnet /LsMsgPackMcp.dll in place of lsmsgpack-mcp.
| Client | How |
|---|---|
| VS Code (Copilot agent mode) | Nothing to do with the MsgPack Explorer extension: it registers the server "MsgPack (LsMsgPack)". |
| Claude Code | claude mcp add lsmsgpack -- lsmsgpack-mcp |
| Visual Studio 2022 (17.14+) | %USERPROFILE%\.mcp.json (or .mcp.json next to the solution): { "servers": { "lsmsgpack": { "type": "stdio", "command": "lsmsgpack-mcp" } } } |
| Claude Desktop, Cursor, Windsurf... | { "mcpServers": { "lsmsgpack": { "command": "lsmsgpack-mcp" } } } |
In VS Code, MsgPack: Copy MCP Server Configuration... copies these: for the tool when it is installed, otherwise for the server that comes with the extension (its path has the extension's version in it, so copy it again after an update).
| Tool | What it does |
|---|---|
msgpack_debug_status | The IDEs with the MsgPack extension, their debug sessions, and where the program is paused. |
msgpack_debug_locals | The variables of the paused stack frame with their types. The ones that can hold bytes are marked. |
msgpack_debug_read | Reads the bytes of an expression in the paused program and decodes them. Reads byte[], streams (seekable ones go back to their position), Memory , List , HttpContent and base64 or hex strings. In VS Code also JavaScript Uint8Array/Buffer and Python bytes. schemaStore reads the schema from the program's SchemaStore when the payload refers to one. saveTo also writes the bytes to a file. |
msgpack_decode | Decodes data (hex, base64 or byte values), a file, or a doc decoded before. schemas takes a SchemaStore.Export (or one schema) for schema references. |
msgpack_read_as_class | Reads the data into a class of a compiled .NET assembly (assembly: the .dll of the build output, type: the class) and reports what doesn't match: properties the class doesn't have (with "did you mean"), values that don't convert, classes without a schema entry, type ids that aren't found, with the paths of the objects (reporting differences). Also shows the object that was read. The assembly is loaded in a separate process: it runs the class's constructors and setters. |
msgpack_explain_offset | What the byte at an offset is: the items holding it, the object member, the header and content bytes, and the bytes around it. |
msgpack_search | The items holding a text or a value, with offsets and object paths. |
Every decoded payload gets a document id (doc1, doc2...) for follow-up calls. The output can be narrowed and switched with these options:
view: objects (default), items (the MsgPack encodings with offsets) or both.path (e.g. Lines[2]), from/to (a byte range), maxNodes, maxString.offsets adds the offset of every value. issues takes errors, all or none.endian and continueOnError (on by default).The MsgPack extensions of VS Code (MsgPack Explorer) and Visual Studio (MsgPack Debugger Extension) listen on 127.0.0.1. They write a lock file with their port and a random token to ~/.lsmsgpack/ide (%USERPROFILE%\.lsmsgpack\ide). The MCP server uses the IDE that started it, otherwise the one whose workspace holds its working directory (ide picks one when several run).
buffer, this._payload, response.Content, items[2].Data), no method calls. The IDE setting can allow any expression: lsmsgpack.mcp.allowAnyExpression in VS Code (user settings only), Tools > Options > MsgPack Explorer in Visual Studio.lsmsgpack.mcp.enabled in VS Code, and the same options page in Visual Studio.lsmsgpack-mcp decode payload.msgpack # the objects
lsmsgpack-mcp decode payload.msgpack --view items # the items with offsets and encodings lsmsgpack-mcp decode --data "82 a4 4e 61 6d 65 ..." # bytes as text lsmsgpack-mcp explain payload.msgpack 0x7b # what the byte at 0x7b is lsmsgpack-mcp search payload.msgpack Amsterdam lsmsgpack-mcp read-as payload.msgpack --assembly bin/Debug/net8.0/MyApp.dll --type Order # what doesn't match the class lsmsgpack-mcp debug status | debug locals | debug read
lsmsgpack-mcp --help lists the options. Without arguments it runs the MCP server on stdin/stdout.
More: docs/Mcp.md.