card_checklist_items

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

No annotations are provided, so the description carries the full disclosure burden. 'Listing' implies a safe read and the default-scope note is useful, but there is no statement about pagination, auth needs, or return shape; the default note also largely restates the schema's filter default of 'all'.

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?

A single front-loaded sentence with the trigger condition first and no waste. It is appropriately sized, though it could have used its brevity to add one differentiating clause.

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 3-parameter list tool with full schema coverage, the description covers purpose and default scope. With no output schema and no note on return fields or pagination, an agent still lacks some information about what it gets back.

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 100%, so all three parameters (checklistId, filter, fields) are already documented, including the filter enum. The description adds no syntax or format detail beyond the schema, so the baseline of 3 applies.

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?

States a specific verb ('listing') and resource ('items in one Trello checklist'), which is enough to separate it from siblings like card_checklists (lists checklists, not items) and card_checklist_item_create/update. It does not explicitly name those siblings, so it stops short of full differentiation.

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 phrase 'Use when listing...' gives implied context, and it clarifies the default scope (complete and incomplete). However, it names no alternatives and gives no when-not guidance, e.g., how this differs from card_checklists.

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