cigchat_subscriber_set_user_fields_by_name

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

The description discloses an authentication requirement ('Requires the Manage Flow scope on the token') and a constraint ('up to 20 user fields'), which are useful. However, with no annotations carrying the burden, it does not describe side effects, whether missing fields are created, or response behavior, leaving a moderate 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.

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

The description is concise, front-loading the action, and includes the endpoint and auth scope in two short segments. However, the phrasing 'subscriber multiple user field value' is grammatically awkward and could be clearer, slightly detracting from structure.

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 tool with no annotations, no output schema, and only two parameters, the description provides some context (purpose, limit, auth) but omits crucial details like how user_ns identifies the subscriber and how the data array is structured. Given the complexity and many sibling tools, this incompleteness hinders proper invocation.

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%, and the description fails to explain the meaning of 'data' or 'user_ns'. It only offers a vague phrase 'subscriber multiple user field value' and does not mention that data is an array of name/value pairs or what user_ns represents. This is insufficient compensation for the lack of schema documentation.

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 ('Set or update') and resource ('subscriber user field value'), and specifies scope ('multiple user field value, up to 20 user fields'). The endpoint URL 'set-user-fields-by-name' distinguishes it from sibling tools like set_user_fields or set_user_field, making the purpose unambiguous.

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?

No guidance is provided on when to use this tool versus alternatives (e.g., set_user_field_by_name for single fields or set_user_fields for IDs). The description does not mention exclusions, prerequisites beyond the auth scope, or scenarios where this tool is preferred.

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