read_daily_log

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

No annotations are provided, so the description must carry the burden of describing behavior. It mentions the date default (today) and the ISO format, but does not disclose whether the tool returns an empty result if no log exists, whether it creates a log if missing, or any side effects. The behavior is simple, though, so a 3 is reasonable.

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 that is concise and front-loaded: states the action (read), the resource (one day's log), and key constraints (ISO date, default today). No wasted words, but it could include a bit more detail without bloating, so a 4.

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 tool with one parameter and no output schema, the description is thin. It doesn't specify the return format, whether it handles missing dates gracefully, or how it relates to log_entry (sibling). Given the simple scope, it meets minimum viability but leaves gaps that could cause mis-calls when agents need to retrieve logs vs. create entries.

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%, so the description must compensate for the 'date' parameter. It only specifies ISO format and default today, but lacks details on timezone handling, acceptance of datetime vs date-only, or whether null is allowed (though the schema allows null). This is minimal, so a 2 is appropriate.

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 the tool reads a day's log with an optional ISO date, defaulting to today. This is specific and distinct from siblings. However, it does not explicitly differentiate from related tools like log_entry or recent_notes, though the action and resource are clear.

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 context is implied: use when you need to retrieve a daily log, with date format and default behavior mentioned. No explicit guidance on when not to use it or how it compares to alternatives like log_entry or recent_notes, but the description gives enough for basic selection.

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