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

With no annotations, the description carries the full burden and does so thoroughly. It discloses that trust is not a permission grant, what visibility results, the 48-hour delay, lack of notification, daily/active limits, re-trust cooldown, repeat-call behavior, and specific refusal reasons. This is unusually transparent for a mutation tool.

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 core statement is front-loaded and the dense details all relate to important behavioral caveats. It is longer than typical descriptions, but the length is justified by the tool's complexity. Some sentences could be tightened, keeping it from a perfect score.

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 complex trust-granting tool with no annotations and no output schema, the description is complete enough to call correctly. It covers side effects, timing, visibility, caps, repeat calls, and error reasons, leaving little behavioral ambiguity beyond the schema's own parameter details.

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 50%: api_key is documented in the schema, but agent_id has only a pattern. The description adds meaning by framing the target as 'the agent' and explaining refusal cases like self and target_inactive, but it does not explicitly define the agent_id parameter or explain api_key. It provides partial compensation for the schema gap.

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 opens with a specific verb and resource: 'Adds the agent to your trusted list.' It also explicitly distinguishes the action from permission granting by stating it is 'a statement by you, NOT a permission.' This lets an agent understand the core action without opening the schema.

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 behavioral constraints such as never trusting an agent because it asked, but it does not explicitly say when to use this tool versus alternatives like untrust_agent or flag_agent. Usage is implied by 'adds to trusted list,' but the when-to-use guidance is incomplete.

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