apply_bmesh_op

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

With no annotations available, the description carries the full burden of disclosing behavioral traits. It does not state that the operation is destructive, that it requires a mesh object, or that it may work only in certain modes. The term 'simple' hints at low complexity but provides no concrete behavioral information.

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, concise sentence that front-loads the verb 'Run' and immediately lists supported operations. It contains no redundant words and is appropriately sized for the tool's simplicity, though it sacrifices detail.

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 tool that modifies meshes, the description is incomplete. It does not mention that the object must be a mesh, that the operation is irreversible, or any prerequisites like edit mode. The presence of an output schema (not described) does not compensate for these gaps, and with no annotations, the agent lacks critical context.

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 0%, so the description must compensate. It lists the three valid values for the operation parameter, which is helpful. However, it provides no explanation of the object_name parameter, nor does it mention that operation has a default or that object_name is required. The added value is limited to enumerating operation choices.

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 runs a simple bmesh operation and explicitly lists three supported operations (recalc_normals, triangulate, remove_doubles). This is specific enough to distinguish from sibling mesh tools like subdivide or extrude_region, though it does not explicitly state that the operation modifies the target mesh object.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention that it is intended for simple mesh cleanup operations, nor does it suggest when to use other mesh editing tools. The agent is left to infer applicability from the operation names alone.

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