Skip to main content
Glama
fedeclavero

Mercado Libre MCP

by fedeclavero

meli_picture_errors

Read-only

Fetch processing errors for a Mercado Libre product image by picture ID to diagnose upload or moderation failures and resolve listing issues.

Instructions

Consulta errores de procesamiento de una imagen.

Input Schema

NameRequiredDescriptionDefault
picture_idYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.7/5.0
Behavior2/5

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

Annotations already declare readOnlyHint, openWorldHint and destructiveHint, so the safety profile is covered. The description itself only restates the tool name's meaning and adds nothing about what the error payload contains, whether errors persist after re-upload, or any rate/availability constraints.

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?

A single front-loaded sentence with no padding. It is appropriately terse, though brevity here comes at the cost of substance rather than from efficient packing of information.

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?

With no output schema, no parameter documentation, and no behavioral detail, an agent lacks what it needs to know how to obtain a valid picture_id and what the error response looks like. The description is too thin for a diagnostic tool.

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?

Schema description coverage is 0% and the single required parameter picture_id is undocumented in both schema and description — no format, source (e.g., from meli_set_item_pictures response), or validity constraints are given.

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 gives a specific verb and resource ("Consulta errores de procesamiento de una imagen"), making clear this retrieves processing-error information for a picture. It is distinct from the picture-centric siblings like meli_set_item_pictures, though it doesn't explicitly name that distinction.

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?

There is no guidance on when to call this versus meli_set_item_pictures or the image-related guide tools, and no mention of prerequisites such as needing a previously uploaded picture. The agent must infer the usage context entirely.

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