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jyarbro

eBay Seller MCP Server

by jyarbro

ebay_cancel_bundle

Cancel an active eBay bundle by providing its unique bundle ID. Use this to remove unwanted or erroneous bundles from your listing.

Instructions

Cancel a bundle by ID

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bundleIdYesThe bundle ID to cancel
Behavior2/5

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

Without annotations, the description carries the full burden of behavioral disclosure. It only says 'cancel', omitting side effects, reversibility, required permissions, or any impact on related entities.

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?

The description is a single, complete sentence of five words. It is extremely concise without sacrificing clarity, fitting the principle of front-loading essential 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?

Given the lack of annotations and output schema, the description is too sparse. It does not cover return values, error conditions, or the lifecycle of a bundle after cancellation, leaving gaps for an agent.

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% for the sole parameter bundleId, which already explains its meaning. The description adds no additional semantic value beyond the schema, meeting the baseline.

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 verb 'Cancel' and the resource 'bundle by ID', making the tool's purpose evident. Among siblings like ebay_create_bundle and ebay_get_bundle, it distinguishes itself as the cancellation action.

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 is provided on when to use this tool versus alternatives, nor are there prerequisites or exclusions mentioned. The agent receives no context about appropriate scenarios.

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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