explain_change

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

With no annotations, the description carries the full burden. It discloses that the explanation is synthesized by Gemini Pro, indicating AI generation. It also implies a read-only operation, though not explicitly stated. No contradictions with annotations (none provided).

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 a single, well-constructed sentence that conveys all essential information without wasted words. It is front-loaded with the core action and outcome.

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?

Given the simple two-parameter schema (both described) and no output schema, the description adequately covers what the tool does and returns. It does not mention error cases or prerequisites, but for a tool of this complexity, it is largely complete.

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 coverage is 100%, so the schema already describes both parameters. The description adds 'cross-references a git commit's diff' which hints at the commit_sha usage, but it does not significantly augment the schema descriptions. Baseline 3 is appropriate.

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 verb ('cross-references', 'returns'), the resource ('a git commit's diff with linked Decision/Problem nodes'), and the output ('grounded Markdown explanation'). This distinguishes it from sibling tools like get_open_problems or get_recent_decisions.

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 used to explain a git commit by linking to decisions/problems, but it does not explicitly state when to use it versus alternatives or when not to use it. The sibling tools provide some differentiation, but no direct guidance is given.

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