check_multi_material_pairing

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

No annotations are provided, so the description carries full burden. It discloses that the tool returns compatibility, adhesion quality, temperature notes, and dissolution instructions. For a non-destructive check tool, this is sufficient transparency. It does not mention side effects or auth needs, but those are typically irrelevant for such a tool.

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 fairly concise, with two short paragraphs and a clear Args section. The first line immediately states the purpose. A slight redundancy exists in the Args section (which mirrors the schema), but overall it is well-structured and front-loaded.

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 2-string-parameter tool with no output schema, the description covers purpose, parameter semantics, return values, and usage examples. It is contextually complete given the tool's simplicity and the richness of sibling tools that provide alternatives.

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?

The input schema has 0% description coverage, and the tool has only two parameters. The description adds meaning by labeling each ('First material', 'Second material') and providing examples ('pla', 'abs', 'tpu'). This helps the agent understand the expected values beyond the bare schema.

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 clearly states the tool's verb ('Check if two materials can be co-printed') and the specific resource ('dual extrusion'). It distinguishes from siblings like 'check_material_match' or 'find_material_substitute' by focusing on multi-material pairing and listing return fields (compatibility, adhesion quality, temperature notes).

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?

Explicit usage examples are provided ('can I print PLA with TPU?', 'what support material works with ABS?'), which helps the agent decide when to invoke this tool. It does not explicitly list when not to use it or mention alternative tools, but the examples clearly target multi-material planning.

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