git_log

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that — no ordering, no default limit behavior, no filtering semantics — so it earns no credit for extra disclosure.

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?

It is a single short sentence with no filler, which is structurally clean, but the brevity reflects under-specification rather than disciplined concision. Nothing is front-loaded because there is nothing else to load.

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 4-parameter tool with a defaulted max_count, timestamp filtering, and no output schema, five words are far from sufficient. The agent lacks any sense of what the log entries contain, their ordering, or how the filters interact.

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 only 50%: start_timestamp and end_timestamp are well documented in the schema, but max_count (default 10) and repo_path have no descriptions anywhere. The description does nothing to compensate for those gaps, so it falls below the baseline.

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 gives a verb ('Shows') and a resource ('commit logs'), so the basic operation is inferable, but it essentially restates the tool name git_log and offers no differentiation from siblings like git_show or git_diff. An agent cannot tell from this text how it relates to those alternatives.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives such as git_show for inspecting a single commit. The agent must infer usage purely from the name.

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