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

Annotations already declare readOnlyHint and idempotentHint, so safety is covered. The description adds valuable behavioral context beyond annotations: it clarifies the tool returns documentation ('Returns detailed documentation...') and discloses that it does not consume monthly search quota. This is useful cost/behavioral information not present in the annotations.

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?

Three concise sentences, each with a distinct purpose: stating the tool's function, providing usage order, and disclosing cost/scope. No filler or redundant repetition of schema/annotations. The description is front-loaded with the core purpose and stays tight.

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?

For a simple tool with one optional parameter, strong annotations, and no output schema, the description covers all necessary aspects: what it does, when to call it, what it returns, and its cost profile. The absence of output schema is acceptable because documentation output is inherently freeform and the description already states it returns 'detailed documentation.'

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% with a clear description of the 'topic' parameter and its enum values. The description incidentally mentions content areas ('search tools, filters, and token optimization strategies') that map to topics, but it does not add meaningful syntax or usage details beyond the schema. Baseline 3 is appropriate since the schema handles parameter documentation.

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 begins with 'Get comprehensive usage guide for FundingLandscape tools,' clearly stating the action (get guide) and resource (FundingLandscape tools). It also distinguishes itself from sibling search tools by explicitly positioning it as a first-call meta tool: 'Call this FIRST.'

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 explicitly states when to use the tool: 'Call this FIRST to understand optimal workflows, parameter usage, and best practices.' It also provides a cost-related guideline: 'Does not count toward your monthly searches,' which helps the agent decide to use it freely. Though no alternatives are named, the tool's unique role as a guide makes the advice clear.

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