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

Annotations already cover the read-only, open-world, non-destructive profile, and the description adds real behavior: gates marks boards closed to the founder's account with closed: true and an explicit 'never fill it' instruction, hnUser returns a likely-open signal with a launch_prep fallback, and readiness.blockers/freeTool describe upstream prerequisites.

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?

The output is front-loaded and every clause carries information, but it is one sprawling run-on sentence dense with enumerated fields (gates, open, productHunt, extras, readiness) that is hard to parse on first read. Tighter structure would improve it without losing content.

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?

With no output schema, the description carries the full burden and does so: it enumerates the returned fields, their meaning, the closed-step marker, and the readiness prerequisites. An agent has what it needs to interpret the response without a 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 baseline is 3, but the description goes further: it explains that hnUser yields a judgment about whether Show HN is open to that account and is read from launch_prep when omitted, and that `all` is only for founder-requested boards.

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?

Opens with a specific resource and scope: the launch boards that fit this product, minus already-recorded steps. It also implicitly separates itself from launch_prep by explaining that a username stored there is read without needing hnUser. There is no crisp single verb, but an agent can tell what it returns.

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?

It gives concrete guidance for the `all` parameter (only when the founder asks for a board by name) and when notOffered applies, but never states when to call this versus launch_prep, listing_targets, or today. Usage is implied by the return contents rather than stated.

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