get_time_entries_for_date

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

Annotations already declare readOnlyHint and idempotentHint, so the safety profile is covered. The description adds meaningful behavioral context: timezone accepts any IANA value, defaults to account timezone, and falls back to UTC. This goes beyond the annotations and helps predict behavior.

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 well-structured sentences, front-loaded with the primary action and resource. The second sentence adds useful timezone context without waste. Every sentence earns its place.

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 simple read-only fetch with three optional parameters and strong annotations, the description is mostly adequate. It explains the single-date scope and timezone defaults. However, it does not clarify the exact time range for an entry on a given date (e.g., 00:00–23:59), which could be relevant for correct invocation.

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 marginal value by clarifying timezone fallback behavior, which is partially redundant with the schema. It does not add significant new parameter semantics beyond what the schema already provides.

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 fetches Toggl Track v9 time entries for a single date, using a specific verb ('fetch') and resource ('time entries'). It distinguishes itself from the sibling tools (ping, check_auth) which are unrelated to time entry retrieval.

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 usage for a specific date ('single date') and provides context on timezone handling, making it clear when this tool is appropriate. However, it does not explicitly mention what to use for other scopes (e.g., multiple dates or ranges), as no alternative among siblings directly relates.

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