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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds that the agents share the selected-Space access model as external agents, which is genuine behavioral context, but it says nothing further about scope of returned data or the rate card's freshness.

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?

Two compact sentences with the entity list front-loaded, so there is very little waste. Minor slack in the phrasing 'their benefit', which is vague relative to the rest.

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 an output schema present and full annotation coverage, the description only needs to orient the agent, which it does. It omits any mention of when to reach for this versus private_agent_budget, a small gap for a catalog-style tool.

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 are zero parameters and 100% schema coverage, so parameter semantics are fully handled by the empty schema. Baseline for a no-param tool is 4.

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?

The description names the four agent entities (Curator, Private Support, Private Research, Orchestrator) and states the contents are purpose plus current cost rate card, which is concrete and resource-specific. It does not explicitly differentiate from close siblings such as private_agent_budget or private_agent_setup_list, so it falls short of a 5.

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 description gives no explicit when-to-use or when-not-to-use guidance and names no alternatives, though 'Discover ... their purpose and current cost rate card' implies it is the reference step before invoking agent runs. Usage must be inferred from sibling context rather than stated.

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