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add_checklist_item

Add a new item to an existing Trello checklist by specifying the checklist ID and item name.

Instructions

Add an item to an existing checklist.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
checklist_idYes
nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior1/5

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

No annotations are provided, so the description carries full burden for behavioral disclosure. The single sentence only states the action, offering no insight into side effects (e.g., whether item is appended, positional behavior), error conditions, or idempotency. This is a critical gap for a mutation tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence. However, at 8 words, it is under-specified and lacks structure (e.g., no bullet points, no parameter hints). It earns a middle score because brevity does not compensate for missing critical details.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 2 required parameters, no annotations, and an output schema (not shown), the description fails to provide necessary context. It does not mention how the item is added (e.g., position), any constraints (e.g., duplicate name handling), or what the output represents. The description is far from complete for reliable use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not explain the meaning of 'checklist_id' (e.g., how to obtain it) or 'name' (e.g., whether it allows emojis, length limits). The agent must infer from names alone, which is insufficient.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Add an item') and the target resource ('an existing checklist'). This distinguishes it from siblings like 'add_checklist', which creates a new checklist, or 'add_comment', which adds a comment to a card. Purpose is specific and unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

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 prerequisites (e.g., checklist must already exist), typical use cases, or when not to use it. The agent has no context to choose this tool over others.

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

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