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

Adds real context beyond annotations: it returns all validation problems at once, produces a private page that expires after 7 days, requires no sign-in, and explicitly does not publish. That said, readOnlyHint=false is unexplained (a preview page is created), and nothing is said about regeneration or limits.

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?

Front-loads what the tool does and what to send, then closes with the key behavioral facts (all errors at once, 7-day expiry, publishes nothing). The field enumeration is dense but each item maps to a required input, so little is wasted.

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?

Covers the essential behavior for a 15-parameter, no-output-schema tool: no auth needed, batch validation feedback, preview expiry, and the no-publish guarantee. Missing only secondary details like regeneration behavior or size limits beyond those in the schema.

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 the baseline is 3, but the description goes further by enumerating the expected content set (headline, summary, body, key facts, quote with name and role, contact, company name/website, optional image) and flagging the image URL as conditional.

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 and resource (preview a press release on LivePublicator) and explicitly separates itself from write siblings with 'This tool publishes nothing,' which distinguishes it from create_release and publish_release without needing their schemas.

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?

Tells the agent to 'send the finished release' and notes the preview page has a publish button, which implies this is the pre-publish validation step. It stops short of naming an alternative or stating an explicit when-not condition.

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