JSON MCP Server
Servidor JSON MCP (@gongrzhe/server-json-mcp@1.0.3)
Implementación de un servidor del Protocolo de Contexto de Modelo (MCP) JSON para consultar y manipular datos JSON. Este servidor permite a los LLM interactuar con datos JSON mediante un conjunto de herramientas estandarizadas.
Instalación y uso
# Using npx with specific version (recommended)
npx @gongrzhe/server-json-mcp@1.0.3
# Install specific version globally
npm install -g @gongrzhe/server-json-mcp@1.0.3
# Run after global installation
server-json-mcpRelated MCP server: MCP Database Server
Componentes
Herramientas
consulta
Consultar datos JSON utilizando la sintaxis JSONPath con operaciones extendidas
Aporte:
url(cadena): URL de la fuente de datos JSONjsonPath(cadena): expresión JSONPath con operaciones opcionales
filtrar
Filtrar datos JSON mediante condiciones
Aporte:
url(cadena): URL de la fuente de datos JSONjsonPath(cadena): expresión base JSONPathcondition(cadena): condición de filtro
Operaciones apoyadas
Operaciones de matriz
Corte :
$[0:5],$[-3:],$[1:4]Ordenación :
$.sort(price),$.sort(-price)Distinto :
$.distinct()Transformaciones :
Mapa:
$.map(fieldName)Aplanar:
$.flatten()Unión:
$.union([1,2,3])Intersección:
$.intersection([1,2,3])
Operaciones con cadenas
Caso :
$.toLowerCase(),$.toUpperCase()Pruebas :
$.startsWith('test'),$.endsWith('test')Buscar :
$.contains('test'),$.matches('pattern')
Operaciones numéricas
Matemáticas :
$.math(+10),$.pow2()Redondeo :
$.round(),$.floor(),$.ceil()Funciones :
$.abs(),$.sqrt()
Operaciones de fecha
Formato :
$.format('YYYY-MM-DD')Comprobar :
$.isToday()Modificar :
$.add(1, 'days')
Operaciones de agregación
Grupo :
$.groupBy(category)Estadísticas :
$.sum(price),$.avg(price),$.min(price),$.max(price)
Configuración
Uso con Claude Desktop
Para utilizar este servidor con la aplicación Claude Desktop, agregue la siguiente configuración a su claude_desktop_config.json :
{
"json": {
"command": "npx",
"args": [
"@gongrzhe/server-json-mcp@1.0.3"
]
}
}Alternativamente, puede utilizar el comando node directamente si tiene el paquete instalado:
{
"json": {
"command": "node",
"args": [
"path/to/build/index.js"
]
}
}Desarrollo
Construyendo desde la fuente
Clonar el repositorio
Instalar dependencias:
npm installConstruir el proyecto:
npm run build
Notas
Todas las expresiones JSONPath comienzan con
$que representa el objeto raízLos índices de matriz se basan en cero
Los valores de cadena en las operaciones deben estar entre comillas
Las operaciones de fecha admiten unidades de "días", "meses" y "años".
Las operaciones numéricas admiten operadores aritméticos básicos (+, -, *, /)
Licencia
Instituto Tecnológico de Massachusetts (MIT)
Available Tools
2 toolsTool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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TDQS
Scored across 2 tools
The tools 'filter' and 'query' both operate on JSON data, which creates some overlap in purpose, as filtering can be seen as a subset of querying. However, the descriptions differentiate them: 'filter' uses conditions (likely simpler, boolean-based operations), while 'query' uses JSONPath syntax (a more expressive, path-based language). This distinction helps reduce confusion, but an agent might still struggle to choose between them for certain tasks.
Both tool names follow a consistent pattern: they are single, lowercase verbs ('filter' and 'query') that clearly indicate actions. There are no deviations in style (e.g., no mixing with snake_case or camelCase), making the naming predictable and easy to understand across the set.
With only 2 tools, this server feels thin for a JSON processing domain, which typically involves operations like parsing, transforming, validating, or merging JSON. The limited scope may force agents to work around gaps, as basic tasks like reading or writing JSON files are not covered, making it under-scoped for a general-purpose JSON server.
The tool set is severely incomplete for JSON processing. While 'filter' and 'query' handle retrieval and selection, there are no tools for creating, updating, validating, or manipulating JSON structures (e.g., add, remove, merge). This leaves significant gaps that will likely cause agent failures when trying to perform common JSON operations beyond simple queries.
Maintenance
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