List Observation Category Configurable Field Sets

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

Annotations set readOnlyHint, destructiveHint, idempotentHint, openWorldHint. Description adds behavioral details: pagination via page and per_page, inclusion of pagination metadata, and the required parameter project_id. This provides practical usage context beyond what annotations convey. No contradiction.

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 concise at three sentences, with supplementary API endpoint and required parameter info. It is front-loaded: first sentence defines output, second provides use cases, third explains pagination. Every sentence is informative, though it could be slightly more streamlined.

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 list tool with 3 well-documented parameters and no output schema, the description covers pagination, required parameter, and use cases. It does not detail response structure or potential filters, but given the openWorldHint annotation and the simplicity of the tool, completeness is adequate.

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 100% and descriptions for each parameter are already provided in the input schema. The description rephrases pagination instructions ('Use page and per_page to control pagination') and notes the required parameter, but adds no new semantic information beyond what the schema already offers.

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 action ('Returns a collection'), the resource ('Observation Category Configurable Field Sets'), and the context ('from the Project'). It specifies use cases: 'enumerate Observations when you need a paginated overview, to find IDs, or to filter by query parameters.' This effectively distinguishes it from siblings like list_configurable_field_sets or other listing endpoints by specifying the exact resource and purpose.

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 advises when to use this tool: for paginated overviews, finding IDs, or filtering. It provides context but does not explicitly mention when not to use it or name alternative tools. The guidance is clear and useful, though lacks exclusions.

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