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jyarbro

eBay Seller MCP Server

by jyarbro

ebay_get_customer_service_metric

Retrieve customer service performance metrics for your eBay listings. Analyze evaluation data across specific marketplaces to measure seller service quality.

Instructions

Get customer service metrics

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
evaluationTypeYesEvaluation type
evaluationMarketplaceIdYesMarketplace ID for evaluation
customerServiceMetricTypeYesType of metric
Behavior2/5

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

No annotations are provided, so the description should disclose behavioral traits. It does not mention anything beyond the action. No information on permissions, data freshness, or any side effects.

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

Conciseness3/5

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

The description is very concise (one sentence). While brevity is good, it sacrifices informativeness. It could be expanded with key details without losing clarity.

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?

The tool has 3 required parameters, no output schema, and is one of many similar get tools. The description does not explain what the metrics represent, how they are grouped, or what response format to expect, leaving the agent underinformed.

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 description coverage is 100%, with short descriptions for each parameter. The tool description does not add any additional meaning beyond what the schema provides, so it meets the baseline for high coverage but adds no extra value.

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

Purpose3/5

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

The description states 'Get customer service metrics', which is clear but vague. It doesn't specify which metrics, and there are many sibling get tools (e.g., ebay_get_feedback_summary, ebay_get_seller_standards_profile) that could overlap. It's not a tautology but lacks specificity.

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?

No guidance on when to use this tool versus alternatives. No mention of prerequisites, context, or typical use cases. The agent has to infer from the name alone.

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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