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NicolasAEV

MCP Mercado Público

by NicolasAEV

Listar Organismos Compradores

listar_compradores

Retrieve all public buyers (organisms) registered in Mercado Público, including name and numeric code for use in tender and purchase order searches.

Instructions

Retorna la lista completa de organismos públicos (compradores) registrados en Mercado Público. Incluye nombre y código numérico de cada organismo. El código (CodigoOrganismo) puede usarse en buscar_licitaciones y buscar_ordenes_de_compra. Para buscar por nombre de municipio o institución usa la herramienta buscar_organismo.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
ticketNoTu ticket de acceso a la API de Mercado Público. Puedes obtenerlo en https://api.mercadopublico.cl/modules/IniciarSesion.aspx. Si el servidor fue configurado con la variable de entorno MERCADO_PUBLICO_TICKET, este parámetro es opcional.
Behavior4/5

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

No annotations provided, but the description discloses the optional ticket parameter and that the ticket can be obtained from a specific URL. It implies a read-only operation and doesn't mention destructive behavior, which is appropriate for a listing tool.

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?

Two sentences: first states purpose, second provides usage guidance and sibling reference. No wasted words, front-loaded.

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

Completeness5/5

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

For a simple tool with one optional parameter and no output schema, the description fully explains what it returns and how to use the code. It also references a sibling tool for different use cases.

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?

Schema coverage is 100% with a detailed description for the ticket parameter. The tool description adds no additional meaning beyond the schema, so baseline score of 3 is appropriate.

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 it returns the complete list of public agencies (compradores) with name and numeric code. It distinguishes from sibling buscar_organismo which is for searching by name.

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?

Explicitly says when to use (for full list) and when not (use buscar_organismo for name search). Also explains how the code can be used in other tools.

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

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