get_latest_build_session

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

Annotations already declare readOnlyHint and idempotentHint, so the description's safety transparency is adequate. However, the claim 'Get all ... log lines' contradicts the tail_lines parameter which only retrieves the last N lines. The description does not disclose this limitation, misleading the agent about the scope of data retrieved.

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 reasonably concise at five sentences, covering purpose, output format, and content. It front-loads the primary action and follows with return structure. Some redundancy (e.g., 'raw VerseBuild output lines' twice) could be trimmed, but overall efficient.

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 tool with one optional parameter and strong annotations, the description adequately conveys return fields and general use. However, it omits the tail_lines parameter's role, the fact that 'all' is misleading, and does not mention when the log might not exist (though the output provides log_exists). Given the negative impact of the missing parameter info, completeness is adequate but not thorough.

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% (context signal), meaning the description must document the parameter. The parameter 'tail_lines' is not mentioned anywhere in the description; no explanation of its function, defaults, or constraints is provided. The agent gains no behavioral understanding beyond the schema's own minimal label.

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 'all VerseBuild log lines from the most recent build session' with a specific verb ('Get') and resource (latest build session logs). It implicitly distinguishes from siblings by focusing on build session content, not freshness or diagnostics.

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 indicates the tool is 'useful for understanding the full build context', implying when to use it, but does not explicitly contrast with siblings like 'check_verse_log_freshness' or provide when-not-to-use guidance. Usage is clear but not exclusive.

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