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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered; the description adds two pieces of genuine behavioral context beyond that: responses are attributed 'with sources', and results are filtered by 'the key's role', which tells the agent answers may be incomplete due to permissions. It stops short of describing handling of unanswerable questions or any latency/rate behavior.

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?

One sentence, front-loaded with the core action, and the parenthetical '(calls, notes, docs)' and the trailing permission qualifier both earn their space. Dense but not bloated.

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 one-parameter read-only tool with annotations covering the safety profile and no output schema, the description supplies scope, source attribution, and the role-based access constraint. Nothing essential to correct invocation is missing, though a pointer to the closest sibling would complete it.

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 a single parameter with 100% schema description coverage, so the schema already documents it and a 3 baseline applies. The description adds only indirect meaning about the question (it should be answerable from workspace knowledge and is constrained by key role), not anything about form or phrasing.

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: answer a question from the workspace's own knowledge, and enumerates the source types (calls, notes, docs). This implicitly scopes it away from external-research siblings like research_company and find_companies, but it never names or contrasts with the near-identical ask_herman, so an agent must infer the split.

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?

The scope phrase 'from the workspace's own knowledge' implies when to reach for it (internal facts rather than web lookups), which is useful selection signal. However, there is no explicit when-to-use/when-not guidance and no mention of ask_herman, the most obvious alternative in the sibling list, leaving that choice to inference.

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