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

With no annotations, the description carries full burden. It discloses the financial and temporal aspect (349 USDC, 30 days on Solana) and the prerequisite setup intent. However, it does not outline what 'activate' entails (e.g., does it return a key or modify state?), nor any side effects or authorization needs, leaving gaps in behavioral transparency.

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 concise sentences that convey purpose, cost, duration, and prerequisite. No redundant information; every phrase adds value.

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?

Given three required parameters, no output schema, and no annotations, the description is incomplete. It fails to explain what happens post-activation, how to handle the delivery_claim or setup_token, and lacks guidance on payment execution (e.g., wallet approval). Essential operational details are missing.

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%, yet the description does not explain any of the three parameters (setup_intent_id, setup_token, delivery_claim). It only hints at setup_intent_id via the prerequisite mention of 'Agent Bootstrap setup intent', but provides no detail on format or purpose of the other fields.

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?

Clearly states the verb 'activate' and the specific resource 'Hilt Pay API growth for 30 days' at a cost of 349 USDC on Solana. The description also mentions a prerequisite (Agent Bootstrap setup intent), which distinguishes it from other activation siblings like hilt_activate_scale.

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?

Provides clear context for when to use: to activate growth for a 30-day period at a specified cost. It explicitly mentions a prerequisite (free Agent Bootstrap setup intent), implying that users must complete that step first. However, it does not explicitly list when not to use or mention alternative tools beyond the prerequisite.

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