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

Annotations already declare readOnlyHint and openWorldHint, and the description usefully adds what the call returns: verdict, what is wrong, whether repair reaches a printable file, and a regeneration prompt. That is real behavioral value beyond the annotations, though it omits failure modes such as invalid URLs or oversized files.

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?

Three short sentences, front-loaded with the purpose, then inputs, then outputs. No filler, no repetition of the title.

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?

With no output schema the description does carry the return shape, which is good, but the 0% parameter coverage and unmentioned filename/expect_qr parameters leave gaps an agent needs before calling.

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 0%, so the description must compensate and it only partly does: it explains file_url (public https link), file_base64, and that size is required for images. filename and expect_qr are never mentioned, leaving two of five parameters semantically undocumented.

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?

States a specific verb+resource ('check whether artwork will print correctly') and adds the scope constraint 'at the given size'. It hints at the repair relationship but never names fix_print_file, so sibling differentiation is left implicit.

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?

Gives input-format guidance (give file_url or file_base64, size required for images) but no explicit when-to-use vs alternatives. An agent must infer that fix_print_file handles the repair path described in the return values.

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