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juan-sibbo

GAM Seller MCP Node

by juan-sibbo

discover_products

Discover coarse product families available to a specific buyer in Google Ad Manager.

Instructions

Discover coarse product families available to this buyer.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tokenNoDomain-2 inter-service JWT (RS256)
buyer_idYesBuyer identifier (opaque, B2B)
client_request_idNoClient-supplied idempotency key for replay detection
Behavior1/5

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

No annotations are provided, and the description does not disclose any behavioral traits such as read-only nature, authentication requirements, side effects, or rate limits.

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

Conciseness4/5

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

The description is a single concise sentence, front-loading the core purpose. However, it may be too brief given the lack of annotations and output schema.

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?

With no output schema, the description should explain return values or output format, but it does not. It also fails to provide context on how results are structured or paginated.

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%, so the schema already documents all parameters. The description adds minimal value, only hinting at buyer_id's role but no extra context beyond the schema.

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 tool discovers coarse product families for a buyer, using a specific verb and resource. It distinguishes from siblings like well_known_capabilities and get_forecast, though 'coarse' is somewhat vague.

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 or avoid this tool, nor differentiation from siblings beyond the name. The description doesn't mention prerequisites or contexts.

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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