generate_pet_tag

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

With no annotations present, the description does real work: it discloses that success opens an inline 3D stage, that hosted connections attach a browser stage link, that oversized meshes are auto-decimated for the stage, that the PNG preview is the minimum deliverable, and that there is a 3-tags/month free quota. It does not say whether the generated design is persisted, returns an ID, or can be sent straight to print, which are the remaining behavioral unknowns.

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 purpose is correctly front-loaded in sentence one. However, the inline-3D-stage behavior is explained twice (once in the opening line, again in the all-caps 'INLINE 3D STAGE' block), the 'MAKE DOORS' section is confusingly framed, and a pricing URL with UTM parameters is embedded in the middle of what should be tool semantics.

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 14-parameter generative tool with no annotations and no output schema, the description covers quota and result presentation but leaves the return contract undefined: it never says whether the output is a mesh file, a design ID, a printed job, or a persisted artifact. It also omits the engraving constraints (text length, legibility minimums) that materially change how front_line2 and back should be passed.

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?

Nominal coverage is 93%, but every parameter description is only 'Default: X' — no meaning, allowed values, or format. front_text (the sole required parameter) has no description at all, and shape/back/material are free-form strings with zero enums, so an agent cannot know which shape or back styles are valid. The prose adds nothing about parameters, not even character limits on the engraved text, which is the most consequential detail for a pet tag.

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 opening sentence gives a specific verb and resource: 'Generate a 3D-printable pet ID tag.' That is unambiguous about what is produced. It does not explicitly differentiate itself from the many similar product generators in the sibling list (generate_keychain, generate_nameplate, generate_ornament, generate_fridge_magnet), so an agent must infer the boundary from the resource noun alone.

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 'MAKE DOORS' paragraph names alternatives (design_session, compile_scad) but frames them as the general 'make' loop rather than stating the selection condition, e.g. 'use this tool only when the user wants a pet ID tag; use compile_scad for arbitrary SCAD designs.' The free-tier and upgrade notes are useful commercial context but not usage guidance. The result is implied routing, not explicit when/when-not rules.

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