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

With no annotations provided, the description carries the full burden, and it does add real behavioral context: the return is base64 bytes, two formats are offered, and large labels may truncate in JSON. It stops short of stating whether the operation is idempotent, whether regeneration has cost/side effects, or how failures (missing label) surface.

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?

Two compact clauses with no filler. The core action and output format are front-loaded, and the caveat plus alternative follow immediately without redundancy.

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?

There is no output schema, so describing the return shape (base64 PDF/ZPL) is valuable, and the truncation warning covers an important edge case. Minor gaps remain around failure modes and whether re-creation is safe to repeat.

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%, so both labelId and intentId (including its connection to RecordUserQuestion) are already documented in the schema. The description adds no parameter-level detail beyond what structured data provides, making the baseline 3 correct.

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 states a specific action and resource: re-create label bytes for download, with the output formats (PDF or ZPL as base64) named explicitly. It does not, however, differentiate itself from close siblings like GetLabel, FindLabel, or RemakeLabel, which an agent could easily confuse with this tool.

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?

"use portal for bulk" gives one clear when-not condition, which is genuinely useful. But there is no guidance on when to pick this over GetLabel/FindLabel/RemakeLabel, so the routing decision among siblings is left to inference.

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