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

With no annotations, the description must fully disclose behavior. It mentions output includes firstSeenAt and ledgerVerified but lacks details on rate limits, pagination, error states, or authorization requirements. The brief description offers only basic 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?

The description is a single sentence, which is concise but omits crucial details. It could be slightly expanded to cover parameters without becoming verbose. The structure is acceptable but not optimal given the missing information.

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 4 parameters, no output schema, and no annotations, the description is incomplete. It does not explain the purpose of all parameters, the full output structure, or usage contexts. The agent lacks sufficient information to invoke the tool 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 coverage is 0%, meaning no parameter descriptions exist in the schema. The description only hints at the 'since' parameter ('since the given ISO8601 timestamp') and completely ignores 'field', 'limit', and 'funder'. This fails to provide essential semantic meaning for the agent.

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 clearly states it returns recent events across all grant calls filtered by timestamp. It mentions specific event types (appearance, deadline-move, close, close-early). However, it does not differentiate from sibling tools like grant_watch_timeline or grant_watch_search, which may have overlapping functionality.

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 guidance is provided on when to use this tool versus alternatives such as grant_watch_search or grant_watch_timeline. There is no mention of prerequisites, context, or exclusions, leaving the agent without direction for tool selection.

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