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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so safety is covered; the description adds genuine context beyond that by disclosing the conditional result set depending on whether Dø Desktop is connected. It stops short of describing ordering, size, or whether names are unique across stock and third-party plugins.

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?

Three front-loaded sentences: purpose, result composition, then the actionable follow-up with an example payload. It is dense but every sentence carries information; the parenthetical 'stock + third-party' partly repeats the preceding clause.

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 and no parameters, the description correctly shouldered the job of explaining what comes back — and it does, at the level of catalog vs. installed set. It could say more about the shape of each entry (name, type, vendor), which matters since the agent must match names exactly.

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?

The tool takes zero parameters, so the schema carries no semantic burden and the baseline is 4. The description does add useful adjacent semantics by naming the exact add_device argument the returned names feed into, tying output to downstream input.

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 (list available insertable plugins) and immediately names the consuming operation, doseedo_edit_session's add_device. It also distinguishes the two sources returned (stock Logic catalog vs. plugins actually installed when Dø Desktop is connected), which is far more than a restatement of the title.

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 explicitly routes the agent forward: after listing, insert with add_device {channel_id, device: {name: "…"}}, including the exact payload shape. What is missing is differentiation from the sibling doseedo_instruments, which plausibly overlaps, and any statement of when this list is unnecessary.

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