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

No annotations are supplied, so the description carries the full burden of behavioral disclosure, and it discloses nothing. It does not say whether this is a read-only lookup, what window or granularity of history is returned, whether pagination applies, whether the returned history is immutable, or what happens for an unknown agent_id.

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?

The text is short, but this is under-specification rather than conciseness — there is no waste simply because there is almost no content. The bracketed '[trust]' prefix is a namespace tag, not information an agent can act on.

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 parameterized retrieval tool with zero annotation coverage, no output schema, and no parameter documentation anywhere, the definition is wholly inadequate. An agent cannot determine what it will receive, over what period, or how to invoke it correctly.

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 0% for the single parameter agent_id, and the description adds no meaning at all — it never mentions the parameter, its expected format (UUID, DID, handle), or whether it identifies the agent whose history is fetched. With one undocumented parameter and no schema text, the description should have compensated and does not.

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 'Trust score history' merely restates the tool name in plainer words, giving no verb, no scope, and no resource qualifier beyond the obvious. It does not distinguish this from sibling tools such as trust_score, trust_decay, or agents_reputation, which an agent must choose between.

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?

No when-to-use guidance, no conditions, and no mention of alternatives is provided. An agent has no signal for choosing trust_history over trust_score, trust_decay, or reputation_record for a given query about an agent's trust.

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