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jyarbro

eBay Seller MCP Server

by jyarbro

ebay_get_automotive_parts_compatibility_policies

Retrieve automotive parts compatibility policies for a given marketplace to ensure compliant vehicle fitment listings.

Instructions

Get automotive parts compatibility policies for a marketplace

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filterNoFilter criteria
marketplaceIdYesMarketplace ID
Behavior2/5

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

No annotations provided, and the description does not disclose behavioral traits such as read-only nature, required permissions, rate limits, or side effects. For a simple getter, basic transparency is missing.

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?

Single sentence of 7 words, front-loaded with key information. No superfluous text, every word earns its place.

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?

Tool has no output schema and no annotations. The description is minimal; it does not explain what the policies contain, why they are needed, or format of response. Adequate for a simple getter but lacks completeness.

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?

Input schema has 2 parameters with full description coverage (100%). The schema describes 'marketplaceId' as an enum and 'filter' as a string. The description adds no extra meaning beyond the schema, so baseline score of 3 applies.

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 action (Get), the resource (automotive parts compatibility policies), and the scope (for a marketplace). It uses specific verb and resource, distinguishing it from other 'get_*' sibling tools like 'get_category_policies' or 'get_listing_type_policies'.

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 prerequisites, and no when-not-to-use advice. The description implies that it is for retrieving policies, but does not explain context or exclusions.

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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