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aws-powertools

Powertools MCP Search Server

Servidor de búsqueda MCP de Powertools

Un servidor de Protocolo de contexto de modelo (MCP) que proporciona funcionalidad de búsqueda para la documentación de AWS Lambda Powertools en múltiples tiempos de ejecución.

Guía de inicio rápido de Claude Desktop

Siga las instrucciones de instalación. Consulte la Guía de inicio rápido del Protocolo de Contexto de Modelo para usuarios de Claude Desktop . Deberá agregar una sección al archivo de configuración de MCP como se indica a continuación:

{
  "mcpServers": {
    "powertools": {
      "command": "npx",
      "args": [
        "-y",
        "@serverless-dna/powertools-mcp"
      ]
    }
  }
}

Related MCP server: MCP-Ragdocs

Descripción general

Este proyecto implementa un servidor MCP que permite a los Modelos de Lenguaje Grandes (LLM) buscar en la documentación de AWS Lambda Powertools. Utiliza lunr.js para lograr una búsqueda local eficiente y proporciona resultados que se pueden resumir y presentar a los usuarios.

Características

  • Servidor compatible con MCP para integración con LLM

  • Búsqueda local utilizando índices de lunr.js

  • Soporte para múltiples tiempos de ejecución:

    • Pitón

    • Mecanografiado

    • Java

    • .NETO

  • Búsqueda de documentación específica de la versión (predeterminada a la más reciente)

Instalación

# Install dependencies
pnpm install

# Build the project
pnpm build

Uso

El servidor se puede ejecutar como un servidor MCP que se comunica a través de stdio:

npx -y @serverless-dna/powertools-mcp

Herramienta de búsqueda

El servidor proporciona una herramienta search_docs con los siguientes parámetros:

  • search : La cadena de consulta de búsqueda

  • runtime : El tiempo de ejecución de Powertools para buscar (Python, TypeScript, Java, DotNet)

  • version : cadena de versión opcional (predeterminada en 'última')

Desarrollo

Estructura del proyecto

  • src/ : Código fuente

    • index.ts : Implementación del servidor principal

    • searchIndex.ts : Gestión de índices de búsqueda

  • indexes/ : Índices de búsqueda de lunr.js preconstruidos para cada entorno de ejecución

  • dist/ : Salida compilada

Edificio

pnpm build

Pruebas

pnpm test

Configuración de MCP de Claude Desktop

Durante el desarrollo, puede ejecutar el servidor MCP con Claude Desktop utilizando la siguiente configuración.

La siguiente configuración se ejecuta en el escritorio de Windows Claude mientras se desarrolla con el Subsistema de Windows para Linux (WSL). En entornos Mac o Linux, la ejecución es similar.

La salida es un archivo incluido que permite que Node instalado en Windows ejecute el servidor MCP ya que todas las dependencias están incluidas.

{
  "mcpServers": {
    "powertools": {
	"command": "node",
	"args": [
	  "\\\\wsl$\\Ubuntu\\home\\walmsles\\dev\\serverless-dna\\powertools-mcp\\dist\\bundle.js"
	]
    }
  }
}

Cómo funciona

  1. El servidor carga índices lunr.js prediseñados para cada entorno de ejecución compatible

  2. Cuando se recibe una solicitud de búsqueda, se realiza lo siguiente:

    • Carga el índice apropiado según el tiempo de ejecución y la versión (actualmente fijada a la más reciente)

    • Realiza la búsqueda utilizando lunr.js

    • Devuelve los resultados de la búsqueda como JSON

  3. El LLM puede luego utilizar estos resultados para encontrar páginas de documentación relevantes.

Licencia

Instituto Tecnológico de Massachusetts (MIT)

Available Tools

2 tools
fetch_doc_pageA

Fetches the content of a Powertools documentation page and returns it as markdown. This allows you to read the full documentation for a specific feature or function. You MUST use the url returned form the search_docs tool since this will be the page to load.The URL must be from the docs.powertools.aws.dev domain. Use this after finding relevant pages with search_docs to get detailed information.

ParametersJSON Schema
NameRequiredDescriptionDefault
urlYes

TDQS

A4.4/5.0
Behavior3/5

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

With no annotations provided, the description carries full burden. It discloses that it fetches and returns content as markdown, but lacks details on error handling, rate limits, authentication needs, or response format beyond markdown. It adds some context about domain restriction and dependency on search_docs, but behavioral traits are incomplete.

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 front-loaded with the core purpose, followed by usage rules. Each sentence adds value: first defines the action, second explains the output format and use case, third specifies the input source and domain restriction, fourth provides the workflow context. No wasted words.

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

Completeness4/5

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

Given 1 parameter with 0% schema coverage and no output schema, the description does well by explaining parameter semantics and usage context. It covers the tool's role in the workflow with search_docs. However, without annotations or output schema, it lacks details on errors, performance, or exact return structure, leaving some gaps.

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

Parameters4/5

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

Schema description coverage is 0%, so the description must compensate. It explains that the 'url' parameter must be from the docs.powertools.aws.dev domain and obtained from the search_docs tool, adding crucial semantic context beyond the schema's basic URI type. However, it doesn't detail URL format or validation rules.

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

Purpose5/5

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

The description clearly states the verb ('fetches') and resource ('content of a Powertools documentation page'), specifying it returns markdown. It distinguishes from its sibling 'search_docs' by explaining that this tool is for detailed content retrieval after search results are obtained.

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

Usage Guidelines5/5

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

It provides explicit guidance on when to use this tool ('after finding relevant pages with search_docs') and when not to use it (the URL must be from docs.powertools.aws.dev domain, not arbitrary URLs). It names the alternative tool ('search_docs') and specifies the prerequisite input source.

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

search_docsB

Perform a search of the Powertools for AWS Lambda documentation index to find web page references online. Great for finding more details on Powertools features and functions using text search. Try searching for features like 'Logger', 'Tracer', 'Metrics', 'Idempotency', 'batchProcessor', etc. Powertools is available for the following runtimes: python, typescript, java, dotnet. If a specific version is not mentioned the search service will use the latest documentation.

ParametersJSON Schema
NameRequiredDescriptionDefault
runtimeYes
searchYes
versionNo

TDQS

B3.2/5.0
Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions that the search service defaults to the latest documentation if no version is specified, which adds useful context. However, it doesn't cover other behavioral aspects like rate limits, authentication needs, or what the output looks like (e.g., search results format).

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

Conciseness4/5

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

The description is front-loaded with the core purpose and efficiently provides examples and runtime details in subsequent sentences. It avoids unnecessary fluff, though the last sentence about version defaults could be integrated more seamlessly. Overall, it's well-structured and concise.

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

Completeness3/5

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

Given the tool's moderate complexity (3 parameters, no output schema, no annotations), the description covers the basic purpose and some parameter context but lacks details on output format, error handling, or advanced usage scenarios. It's adequate for a simple search tool but has clear gaps in completeness.

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

Parameters2/5

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

The schema description coverage is 0%, so the description must compensate. It explains the 'runtime' parameter by listing supported runtimes (python, typescript, java, dotnet) and the 'version' parameter by noting it defaults to latest if unspecified. However, it doesn't clarify the 'search' parameter beyond examples, leaving its semantics partially undefined.

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 clearly states the tool's purpose: 'Perform a search of the Powertools for AWS Lambda documentation index to find web page references online.' It specifies the resource (Powertools documentation) and action (search), though it doesn't explicitly differentiate from the sibling 'fetch_doc_page' tool. The description provides helpful examples of search terms, which enhances clarity.

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

Usage Guidelines3/5

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

The description implies usage by suggesting search terms ('Logger', 'Tracer', etc.) and mentioning runtime support, but it doesn't explicitly state when to use this tool versus 'fetch_doc_page' or provide any exclusion criteria. It offers some contextual guidance but lacks clear alternatives or prerequisites.

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.

  1. 2 tool updatesv1.0.0
    • First observedfetch_doc_page
    • First observedsearch_docs

TDQS

A3.8/5.0

Scored across 2 tools

Disambiguation5/5

The two tools have clearly distinct purposes: search_docs finds relevant documentation pages, while fetch_doc_page retrieves the content of a specific page. There is no overlap in functionality, and the descriptions explicitly state the workflow relationship between them.

Naming Consistency5/5

Both tools follow a consistent verb_noun pattern (search_docs, fetch_doc_page) with clear, descriptive names that match their functions. The naming is uniform and predictable throughout the set.

Tool Count3/5

With only 2 tools, the server feels thin for a documentation search domain. While the tools cover the core search-and-retrieve workflow, additional utilities like listing available versions or filtering by runtime could enhance completeness. The count is borderline but functional.

Completeness4/5

The toolset covers the essential documentation search workflow: finding pages and fetching content. However, there are minor gaps, such as no direct way to list documentation sections or filter searches by runtime/version without relying on search queries. Agents can work around these with the provided tools.

Maintenance

ActivityNo data
ResponsivenessUnresponsive

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