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jyarbro

eBay Seller MCP Server

by jyarbro

ebay_get_offers

Retrieve all offers for your seller account, filtered by SKU or marketplace. Manage and analyze your eBay listings.

Instructions

Get all offers for the seller

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
skuNoFilter by SKU
limitNoNumber of offers to return
marketplaceIdNoFilter by marketplace ID
Behavior2/5

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

With no annotations, the description carries the burden of behavioral disclosure. It only states 'Get all offers for the seller' without mentioning pagination (despite the limit parameter), authentication requirements, or what exactly 'offers' entails. Minimal transparency.

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 a single sentence, which is concise, but it sacrifices important behavioral details. It is front-loaded but not sufficiently informative.

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?

Given the complexity of the eBay API (many sibling tools) and the lack of output schema, the description is too sparse. It omits pagination, authentication, and the meaning of 'offers', 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 coverage is 100% with descriptions for all three parameters. The description adds no extra meaning beyond what the schema already provides, so baseline 3 is appropriate.

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 action ('Get') and resource ('offers for the seller'), but does not differentiate from sibling tools like ebay_get_offer (singular) or ebay_get_offers_to_buyers, which could cause confusion.

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 over alternatives such as ebay_get_offer or ebay_get_offers_to_buyers. Missing context on filtering or prerequisites.

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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