yougile_set_chat_subscribers

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

The annotation readOnlyHint=false already indicates this is a mutation. The description adds the key behavioral detail that the operation replaces the entire list rather than appending, which is essential context beyond what the annotation provides.

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 exactly two sentences, both informative and free of filler. It front-loads the primary action and then adds the critical replacement detail.

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 two-parameter mutation tool with no output schema, the description covers the core behavior and the replacement semantics. It does not cover every possible edge case, but it is sufficient for an agent to understand what the tool does and what to expect.

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%, so parameters are already well-described. The description adds the meaning that userIds is the full replacement set, not an incremental update, which enriches the schema's 'Array of user UUIDs to subscribe' definition.

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 uses the specific verb 'Set' and clearly identifies the resource: the list of users subscribed to a task's chat notifications. It also notes the replacement behavior, which distinguishes it from the sibling tool yougile_get_chat_subscribers.

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 conveys when to use this tool by implying it is the setter counterpart to the getter (yougile_get_chat_subscribers). It clearly states that it replaces the existing list, which is a critical usage nuance, but it does not explicitly mention alternatives or when not to use it.

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