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

Only mentions cost ($0.01). No disclosures about rate limits, data freshness, or authentication requirements. The required api_key parameter is not mentioned in description.

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?

Extremely concise (two sentences). First sentence covers purpose, second adds cost. Could be restructured to front-load key information.

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?

Given no output schema or annotations, description should explain output format and scope. Only mentions 'across major chains' without listing chains or response details.

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 has one parameter (api_key) with 0% description coverage. Description adds no information about the parameter format, source, or role.

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?

Description clearly states the tool provides network health and status across major chains, distinguishing it from sibling tools focused on specific coins or prices. However, 'major chains' is vague.

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?

No guidance on when to use this tool vs alternatives like get_gas or get_summary. Does not specify supported chains or prerequisites.

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