kit_add_subscriber_to_form

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

No annotations exist, so the description carries full burden. It discloses the key behavioral trait of creating a subscriber if missing. However, it does not mention whether adding an already-subscribed subscriber is idempotent, any error conditions, or rate limits. Still, the main side effect is transparent.

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 sentence that front-loads the main action and note. No wasted words, perfectly concise.

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?

Given no output schema and no annotations, the description is minimal. It does not explain return values, error handling, or behavior for duplicate additions. For a tool that may create resources, more context would be beneficial, but it's adequate for a simple operation.

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 each parameter is described in the schema. The description does not add meaning beyond the schema, such as constraints or relationships. Baseline is 3, and no extra value is provided.

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: 'Add a subscriber to a form' and adds an important side effect: 'creates subscriber if doesn't exist'. It distinguishes this tool from sibling tools like kit_add_subscriber_to_sequence and kit_add_tag_to_subscriber.

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: adding a subscriber to a form, with automatic creation. However, it does not explicitly mention when not to use it or provide comparisons to siblings. The context of sibling tools helps, but the description itself lacks explicit guidance.

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