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

With no annotations, the description carries the burden of behavioral disclosure. 'Fetches' clearly indicates a read operation, and 'previously published' sets a precondition, but it does not describe error behavior, idempotency, or what happens if the ID is invalid. Minimal but not misleading.

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-structured sentence that starts with the main verb and includes all essential information without any redundant words. It is appropriately sized for a simple tool.

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 is simple (one parameter, no output schema), and the description gives the core purpose and precondition. However, since there is no output schema, it would benefit from stating what the return value contains. The sibling context (publish_sheet) helps, but the description alone is somewhat sparse.

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%, and the schema description ('Short ID returned by publish_sheet') fully defines the parameter. The tool description adds no new semantic information beyond what the schema already provides, matching the baseline for high coverage.

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 ('Fetches') and resource ('previously published sheet'), clearly distinguishing it from siblings like get_schema and get_feature_spec. The phrase 'by its short ID' also identifies the key input, making the purpose unmistakable.

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 usage (must be a previously published sheet, so presumably publish_sheet should be called first) but does not explicitly state when to use this tool vs alternatives or provide exclusions. It leaves the timing and prerequisites to inference.

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