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

Annotations already cover safety (readOnlyHint, idempotentHint, destructiveHint=false) and openness, so the bar is lower, yet the description adds real behavioral context: every field is sourced from the vendor's own website, unstated fields are reported as 'not stated' rather than guessed or defaulted. That convention materially changes how an agent should interpret a returned record.

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 returned fields, then provenance, then the link-presentation rule — each block earns its place and there is no filler. Slightly verbose in the final paragraph about links, which is presentation guidance rather than tool behavior.

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 burden of describing return values and does so thoroughly, including provenance and the link field. The remaining gap is failure behavior: what happens when the name matches nothing or matches multiple apps is never stated.

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?

Only one parameter and schema coverage is 100%, so the schema already documents the 'name' string with an example ('Netlify'). The description adds no extra semantics such as whether the name must match exactly or how ambiguous/partial names are handled, so baseline 3 applies.

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 ('Get the full grounded record for one app by name') and enumerates exactly what comes back: description, category, pricing, features, platforms, open-source status. The singular 'one app by name' scopes it clearly against the plural sibling search_apps and compare_apps.

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?

Usage is implied rather than stated: the singular, full-record framing suggests lookup-by-known-name rather than discovery or comparison, and the 'do not infer that an unstated capability is absent' line guides interpretation of results. However, no sibling is named and there is no explicit when-not-to-use or prerequisite (e.g. use search_apps first if the exact name is unknown).

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