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charltonmediagroup

LinkedIn Ads MCP Server

get_audience_size

Estimate the number of LinkedIn members matching specified targeting criteria to inform campaign planning.

Instructions

Estimate audience size for given targeting criteria.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
targetingCriteriaNoTargeting criteria object
Behavior2/5

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

No annotations are provided, and the description does not disclose behavioral traits such as whether the operation is read-only, requires authentication, or has rate limits. The term 'estimate' leaves ambiguity about the nature of the result.

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, clear sentence. It is concise, but could include a bit more detail without becoming verbose.

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 output schema and annotations, the description does not sufficiently explain the return value (e.g., the format of the estimate) or any constraints on the input criteria. The tool is underspecified for reliable agent invocation.

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?

The schema description for 'targetingCriteria' is 'Targeting criteria object', which matches the description. With 100% schema coverage, the description adds no new meaning beyond the schema, meeting the baseline.

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 (estimate) and resource (audience size) with specific input (targeting criteria). It distinguishes this tool from siblings like create_saved_audience or get_saved_audience, which manage audience definitions.

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 such as search_targeting_entities or get_saved_audience. The description does not specify prerequisites or scenarios where this tool is appropriate.

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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