color_get_version_count

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

Annotations declare readOnlyHint=true, and the description is consistent with this, describing a read-only operation that returns a count. However, the description adds no extra behavioral context such as edge cases (e.g., returns 0 if no versions) or dependencies on version_type parameters. Given the annotation covers safety, this is adequate but not rich.

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 one short sentence (12 words) that directly states the tool's function without any filler. It is front-loaded and every word earns its place, making it an exemplary concise description.

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 count tool with a high-coverage schema and an output schema present, the description provides sufficient context: it names the input (timeline item) and output (number of grade versions). It doesn't mention the version_type distinction, but that is already documented in the schema. Minor gap: it could explicitly note that the count respects the version_type parameter, but overall it is complete for the tool's simplicity.

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% and the schema already describes all four parameters (item_name, track_type, track_index, version_type). The description adds no additional parameter-level meaning beyond stating the tool operates on a timeline item, which is already implied by item_name. Baseline 3 applies.

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 uses a specific verb ('Return') and resource ('the number of grade versions on a timeline item'), clearly distinguishing it from related tools like color_get_versions (which lists versions) and color_add_version (which adds versions). The purpose is immediately unambiguous.

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?

No guidance is provided on when to use this tool versus alternatives. There is no mention of color_get_versions for detailed version info or any other related tool. The description only states what it does, leaving the agent to infer usage from the tool name alone.

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