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

Annotations declare destructiveHint=true and idempotentHint=true; the description substantiates both by explaining that re-publishing the same name replaces the page while the link keeps working. It also discloses the 2 MB page ceiling and the no-templating/no-styling guarantee, which annotations cannot convey. Auth model is covered only as 'public, no login' on the viewer side, so not quite exhaustive.

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 the core value (free, hosted, public, ready for a client) before the image-handling caveats. It is on the long side and closes with a slightly redundant restatement ('Use the client's name in the name so they can read it out') that repeats the slug-reuse point already made.

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 no-output-schema publishing tool, the description covers the essentials: where the page lives, that it is public, the size ceiling, overwrite/idempotency behavior, and the image-embedding policy. Nothing an agent needs in order to call it correctly is missing.

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 and the schema already documents all four parameters. The description nonetheless adds real meaning: image URLs must come from get_asset with as: "url", the slug should be reused to update a previously sent report, and using the client's name in the slug makes it human-readable.

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 (hosts/publishes), the resource (the HTML you wrote), and the concrete outcome (a public page at postclick.ppc.io/r/<name>, no login). An agent can distinguish this from sibling page tools like build_page, export_page, or share_page without opening any 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?

Gives a clear context for use (a finished report ready to send to a client) and an explicit when-not for the image-inlining technique, with the condition that selects it (a destination that blocks external images). It does not route the agent between sibling tools such as share_page or export_page, so it stops short of full alternative guidance.

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