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

With annotations present, the description still adds substantial value: a 2-attempt allowance, shared daily capacity, the rule that an admitted attempt is consumed even on failure, that retrying a successful call burns another attempt, mandatory human review, and the injection-safety note that source content is data. These details match the non-read-only, non-idempotent annotation profile and go well beyond it.

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?

Purpose is front-loaded in the opening sentence, and the following sentences each carry operational weight (prerequisite, consumption rule, review requirement, safety note). It is compact though slightly telegraphic, but no sentence is filler.

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?

An output schema exists, so return values need not be described, and annotations cover the safety/idempotency profile. The description adds the operational facts an agent needs (trial limits, prerequisite, review requirement), leaving only parameter-level guidance unaddressed, which is the notable gap.

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 9 parameters (6 required) with only 22% schema description coverage, yet the description says nothing about any of them beyond "your own supplied input." With the schema under-documented, the description is the place that should compensate for actor, decision_stage, dated_sources, and requested_output semantics, and it 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 first sentence names a specific verb ("Run") and resource ("agentic_interaction_trust") and scopes it with the distinguishing constraints ("your own supplied input without payment or an HTTP adapter"), which separates it from the paid/HTTP path. It clearly reads as the free-trial variant of the sibling tool. It does not explicitly contrast against the plain agentic_interaction_trust sibling, so it falls just 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?

It gives an explicit prerequisite ("Check free_trial_status first") and frames the tool against the HTTP trial and shared capacity allowance, which tells the agent when this path is appropriate. What it lacks is an explicit "use this instead when..." rule versus the non-trial sibling, so usage is strong but not fully prescriptive.

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