create_cop_node

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

With no annotations provided, the description carries the full burden and successfully discloses that the tool is MUTATING, validates parent editability and child category, requires node_type to exist in the Cop registry, and operates as a single undo group. It does not cover error behavior or return values, which would enhance transparency, but the mutation and validation context is well communicated.

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 compact (two sentences) and front-loaded with the core purpose ('create a node under the Copernicus parent'). It packs essential behavioral detail (mutation, validation, undo group, optionality) without redundancy, making every sentence earn its place.

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?

Considering the 4-parameter schema, no output schema, and no annotations, the description covers purpose, mutation, validation, and undo behavior, but it omits return value semantics and failure behavior. Since there is no output schema to clarify what the tool returns, the description should explain what the agent can expect on success (e.g., the created node path), making it incomplete but not severely lacking.

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 partially does: node_name is explicitly noted as optional, parent is described as needing to be 'editable', and node_type must exist in the Cop registry. However, the required 'ctx' parameter is completely unexplained, and node_type's actual value range is not given beyond registry existence, leaving a significant semantic gap.

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 verb ('create') and resource ('a node under the Copernicus parent'), and includes validation rules that clearly distinguish it from generic create_node and other node-type-specific tools like create_lop_node or create_chop_node. The parenthetical labels '(add-cops-tools，MUTATING)' reinforce the specific scope and mutation intent.

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 description implies usage context through the name and 'under Copernicus parent' phrasing, and it mentions validation constraints that guide when it is appropriate. However, it never explicitly names alternatives (e.g., 'use create_node for generic nodes') or states when not to use this tool, so guidance remains implicit rather than explicit.

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