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

The annotations already declare readOnlyHint and openWorldHint, so safety and network scope are covered, and with an output schema present the enumerated return fields are largely redundant. The description adds modest value by scoping article types ('Health A-Z or drug') but says nothing about auth, rate limits, or failure modes for a missing/invalid URL.

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?

Two compact clauses, front-loaded with the core action before the sourcing instruction. The enumeration of return fields is slightly wasted given a dedicated output schema, but the whole thing is still tight and easy to scan.

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 single-parameter read tool with annotations covering safety and a full output schema covering returns, the definition supplies purpose, scope, and URL sourcing adequately. No significant agent-facing gap remains.

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% on the single url parameter, and the schema description already states the URL source path, so the description's 'Use URLs from healthgrades_health_articles' mostly reinforces existing information. Baseline 3 is appropriate when the schema carries the 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?

States a specific verb ('Get') and resource ('Healthgrades Health A-Z or drug article') and names the scoping key ('by URL'), which cleanly separates it from healthgrades_health_articles, the sibling that lists URLs. An agent can tell what it returns without opening the schema.

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 instruction 'Use URLs from healthgrades_health_articles' explicitly routes the agent to the feeder sibling tool, which is the key prerequisite. It stops short of stating when-not-to-use it (e.g. for non-Healthgrades health content like goodrx_health_article), so it is clear context rather than full alternatives coverage.

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