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mcp-server-code-runner

by formulahendry
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Servidor MCP de Code Runner

Descargas de NPM insignia de herrería Docker Pulls

Servidor MCP para ejecutar fragmentos de código y mostrar el resultado.

Admite la ejecución de múltiples lenguajes de programación: JavaScript, PHP, Python, Perl, Perl 6, Ruby, Go, Lua, Groovy, PowerShell, BAT/CMD, BASH/SH, F# Script, C# Script, VBScript, TypeScript, CoffeeScript, Scala, Swift, Julia, Crystal, OCaml Script, R, AppleScript, Elixir, Clojure, Racket, Scheme, AutoHotkey, AutoIt, Kotlin Script, Dart, Haskell, Ni, Lisp, Kit, V, SCSS, Sass . La lista completa se puede consultar aquí en constants.ts .

Configuración

npx para VS Code

Instale el servidor Code Runner MCP en VS Code usando los siguientes botones:

Instalar en VS Code Instalar en VS Code Insiders

Alternativamente, puede agregar la configuración en settings.json :

{
  "mcp": {
    "inputs": [],
    "servers": {
      "mcp-server-code-runner": {
        "command": "npx",
        "args": [
          "-y",
          "mcp-server-code-runner@latest"
        ],
      }
    }
  }
}

npx para Claude Desktop

Configuración en claude_desktop_config.json :

{
  "mcpServers": {
    "mcp-server-code-runner": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-code-runner@latest"
      ],
    }
  }
}

Estibador

Utilice VS Code como ejemplo. Instale el servidor MCP de Code Runner en VS Code usando los siguientes botones:

Instalar en VS Code Instalar en VS Code Insiders

Alternativamente, puede agregar la configuración en settings.json :

{
  "mcp": {
    "inputs": [],
    "servers": {
      "mcp-server-code-runner": {
        "command": "docker",
        "args": [
          "run",
          "--rm",
          "-i",
          "formulahendry/mcp-server-code-runner"
        ]
      }
    }
  }
}

Problema con npx en Windows

En Windows, es posible que los servidores MCP no puedan conectarse con npx .

Puedes probar las dos soluciones alternativas siguientes:

usar bunx

  1. Instalar Bun .

  2. En la configuración, cambie npx por bunx .

usar cmd

A continuación se muestra la configuración de VS Code en settings.json :

{
  "mcp": {
    "inputs": [],
    "servers": {
      "mcp-server-code-runner": {
        "command": "cmd",
        "args": [
          "/c",
          "npx",
          "-y",
          "mcp-server-code-runner@latest"
        ],
      }
    }
  }
}

Related MCP server: MCP Expr Lang

Ejecutar contransporte HTTP Streamable

npm install -g mcp-server-code-runner@latest
mcp-server-code-runner --transport http

Uso

Antes de utilizar Code Runner MCP Server, asegúrese de que el intérprete o compilador del lenguaje de programación que desea ejecutar esté configurado en la variable de entorno PATH .

Pruebe las siguientes indicaciones en la aplicación que ha configurado Code Runner MCP Server:

  • Run the JavaScript Code: console.log(5+6)

  • Where is temporary folder in my OS? Use run-code tool

  • How many CPUs do I have in my machine? Use run-code tool

Construye tu propio servidor MCP

¿Quieres crear tu propio servidor MCP? ¡Prueba el Generador Yeoman para Servidor MCP y crea tu proyecto!

Available Tools

1 tool
run-codeC

Run code snippet and return the result.

ParametersJSON Schema
NameRequiredDescriptionDefault
codeYesCode Snippet
languageIdYesLanguage ID

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions running code and returning results but lacks critical details like execution environment, security implications, timeout limits, error handling, or resource constraints, which are essential for safe and effective use.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that front-loads the core purpose without unnecessary words. It is appropriately sized for the tool's function, making it highly concise and well-structured.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of code execution (which involves security, performance, and error handling), the description is insufficient. With no annotations, no output schema, and minimal behavioral details, it fails to provide complete context for safe and informed use, especially for a tool that could have significant side effects.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description does not add meaning beyond the input schema, which has 100% coverage with clear descriptions for both parameters (code and languageId). Since the schema fully documents the parameters, the baseline score of 3 is appropriate, as the description provides no additional semantic context.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Run code snippet and return the result' clearly states the action (run) and resource (code snippet) with a specific outcome (return result). It distinguishes the tool's function effectively, though it lacks sibling differentiation since no sibling tools exist, making a 5 unnecessary.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool, such as for testing, debugging, or specific contexts, and offers no alternatives or exclusions. It only states what the tool does without usage context, leaving the agent to infer applicability.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. 1 tool update
    • First observedrun-code
Install Server
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TDQS

B3.1/5.0
Disambiguation5/5

With only one tool, there is no possibility of ambiguity or overlap between tools. The tool 'run-code' has a clearly distinct and singular purpose.

Naming Consistency5/5

The single tool name 'run-code' follows a clear verb_noun pattern. Since there is only one tool, consistency is inherently perfect with no deviations.

Tool Count2/5

A single tool for a code runner server feels thin and limited in scope. It suggests the server may not fully cover the domain, as typical code execution might benefit from additional tools like listing environments or managing sessions.

Completeness2/5

The tool surface is severely incomplete for a code runner domain. It only provides execution without supporting operations like listing available languages, checking code syntax, or managing execution environments, which are common in such contexts.

Maintenance

ActivityInactive
ResponsivenessUnresponsive

Resources

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