daily_journal_entry

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

With no annotations provided, the description carries the full burden. It says 'Add' and 'Creates' but does not disclose whether the note must exist, whether it appends or inserts, how the formatting behaves, or any side effects. This is a significant gap for a write operation.

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 two short sentences, front-loaded with the action and resource. It includes useful information about formatting and optional sections without redundancy or fluff.

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 write tool with no annotations, no output schema, and a specialized function, the description is incomplete. It does not mention prerequisites (e.g., whether the daily note must exist), return values, or how the journal entry is integrated into the note. The high schema coverage doesn't compensate for missing behavioral context.

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 100%, so the baseline is 3. The description adds minimal parameter meaning; 'optional sections' loosely references todos/gratitude/highlights but does not explicitly map them. No extra value beyond the schema is provided.

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 uses a specific verb 'Add' and clearly identifies the resource 'today's daily note' with a structured journal entry. It distinguishes itself from siblings like append_to_daily_note by emphasizing 'structured' and 'optional sections', which implies a formatted output.

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 implies the tool is for journal entries in daily notes, but it does not explicitly state when to use it versus alternatives like append_to_daily_note or quick_capture. No exclusions or alternative recommendations are provided.

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