get_login_stats_by_client

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

With no annotations provided, the description bears full responsibility for behavioral disclosure. It notes that date_from defaults to last 24h when omitted, but does not mention authentication requirements, rate limits, data scope, or pagination. The return format is vague ('login statistics broken down by client') without detail.

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 concise and front-loaded with the main purpose. Parameter descriptions are structured as bullet points. However, the first sentence could be more precisely worded to avoid ambiguity about 'SP'. No unnecessary words.

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?

The tool has an output schema (not shown but present), so return values are covered externally. The description is adequate for a simple parameterized listing tool but lacks usage context and behavioral traits. Given the presence of sibling tools focused on login stats, more context on when to use this variant would improve completeness.

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?

The input schema provides only names and types (string) with defaults. The description adds format (YYYY-MM-DD) and clarifies that empty date_to means 'all' and omitted date_from defaults to last 24h. Given 0% schema description coverage, this adds meaningful semantic value, though it could explain edge cases (e.g., valid ranges).

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 retrieves login statistics grouped by client (SP). The verb 'Get' and resource 'login stats broken down by client' are specific. However, it does not distinguish from similar tools like 'get_login_stats' or 'get_login_stats_by_hour', which could cause confusion.

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 provides parameter details (date range, format, defaults) but offers no guidance on when to use this tool versus alternatives like 'get_login_stats' or 'get_login_stats_by_hour'. No exclusions or context for appropriate invocation are given.

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