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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false and destructiveHint=false, so the safety profile is fully covered structurally. The description adds only the id-format/provenance context and nothing about failure modes (e.g. unknown id) or return shape.

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?

A single front-loaded sentence with the core action first and the id-format qualifier second; no filler. It is dense but earns its clauses.

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 single-parameter, closed-world read tool with no output schema, the description gives enough to invoke correctly (what it returns, which id forms are valid, where ids come from). Minor gap: no statement about behavior on an invalid or missing id.

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 description coverage is 100% and the schema's own id description already states 'number (catalogue) or m4l_… (author-submitted)', so the description largely repeats it. It adds slight detail by citing maxforlive.com vs. max4.live authorship, but no new semantics.

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 full details for one device') with a singular scope that separates it from the sibling search_devices and list_filters. It also disambiguates the two id forms, though it never names the siblings explicitly.

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?

Points the agent to the source of the id ('from search_devices'), which implies the correct call sequence, but gives no explicit when-not guidance or conditions for choosing it over search_devices.

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