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

Annotations indicate readOnlyHint=true and openWorldHint=true, which the description's 'Get' aligns with. The description adds transparency about the data scope (total raised/spent, PAC, industry breakdown) beyond what annotations provide.

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

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

A single, well-structured sentence that front- loads the verb and resource. Every word adds value with no redundant or extraneous content.

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

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

Without an output schema, the description adequately hints at the return format by listing included data types. The tool has only 2 parameters and is straightforward, so this level of detail is sufficient.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so both parameters (bioguideId, cycle) are fully described in the schema. The description does not add extra meaning beyond the schema's parameter descriptions, meeting the baseline for a 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool retrieves FEC campaign finance data for a legislator, specifying included data like total raised/spent, PAC contributions, and industry breakdown. This distinguishes it from sibling tools that analyze influence or other topics.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for fetching raw campaign finance data but provides no explicit when-to-use or alternatives guidance. Given many analysis siblings, a note about when to prefer this over analyze_* tools would strengthen it.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.