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jyarbro

eBay Seller MCP Server

by jyarbro

ebay_update_email_campaign

Update an existing eBay email campaign by providing the campaign ID and new configuration details.

Instructions

Update an existing email campaign.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
emailCampaignYesUpdated email campaign configuration
emailCampaignIdYesEmail campaign ID
Behavior1/5

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

No annotations are provided, so the description bears full responsibility. It fails to disclose behavioral traits such as whether the update is partial or full, idempotency, required permissions, rate limits, or what fields are mutable. The description is too minimal.

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, front-loaded with no unnecessary words. However, it is overly brief and sacrifices informativeness for brevity. It does not earn its place by providing sufficient context.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool has a nested object parameter, no output schema, and no annotations. The description does not clarify the structure of the emailCampaign object, whether updates are partial, what the response looks like, or any error conditions. It is severely incomplete for a mutation tool.

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 both parameters. However, the description adds no extra insight beyond the schema. The emailCampaign object is unconstrained (additionalProperties: true) and the description merely repeats 'Updated email campaign configuration', offering no semantic richness.

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 (update), the resource (existing email campaign), and is distinct from sibling tools like create, delete, get. It is specific and unambiguous.

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. There is no mention of prerequisites, context, or exclusions. The description does not help the agent decide when to invoke this tool.

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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