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

Annotations already cover the safety profile (readOnly, non-destructive, not open-world), so the bar is lower. The description adds genuinely useful behavior beyond that: the structure of both sections, that roadmap items lack dates and 'may change', and the status values (planned or in_review) – important volatility context for how much to trust roadmap output.

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-loaded with the tool's purpose, then the two result sections, then usage. Every sentence is informative, aside from the slight redundancy of repeating the limit definition already given in the schema.

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?

There is no output schema, so the description carries the burden of explaining return values – and it does, detailing both shipped (date, headline, release notes) and roadmap (title, bullets, status) shapes. Nothing an agent needs to interpret or call this tool 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?

There is only one parameter and schema description coverage is 100%, so the baseline is 3. The description restates 'limit: how many shipped versions (1-20, default 5)' essentially verbatim from the schema, adding no meaning beyond it.

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 resource (what Povver has shipped and what is planned) and anchors it to a concrete source (same text as povver.ai/updates). It also breaks the return into two clearly named sections, shipped and roadmap, so an agent knows exactly what this covers. None of the siblings (workouts, plans, memory) overlap with app release/roadmap data.

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 explicit trigger phrases ('what's new', 'is X out yet', 'is X planned') plus a negative directive ('do not guess'), which is strong routing guidance. It does not name an alternative sibling to use instead, but no sibling plausibly competes for these queries, so the gap is minor.

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