get_essence_msg_list

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

There are no annotations, so the description carries the full burden of behavioral disclosure. 'Get' implies a read-only operation, but the description does not state whether it is non-destructive, whether it returns a list or paginated results, or any ordering, filtering, or permission requirements. For a read operation this is less critical than for mutations, but still a noticeable gap.

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 concise sentence with no redundant words sense. It is front-loaded and easy to parse. However, it is so terse that it sacrifices useful contextual information, though the conciseness itself is good.

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?

The tool is simple with one required parameter, but the description does not mention what the tool returns, whether pagination or limits apply, or how this relates to setting/deleting essence messages. With no output schema and no annotations, more context is needed for an agent to confidently call this tool in the right situation.

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?

The input schema fully describes the only parameter, group_id, as 'Group ID', so schema coverage is 100%. The description adds no additional meaning about the parameter, so the baseline score of 3 is appropriate.

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 specifies a clear verb ('Get') and a specific resource ('group essence message list'), which distinguishes it from set/delete essence tools. However, it doesn't explicitly contrast it with get_group_msg_history or read_group_messages, so the differentiation is not as sharp as it could be.

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 about when to use this tool versus alternatives like get_group_msg_history or read_group_messages. The description implies a simple retrieval use case, but it doesn't state exclusions, prerequisites, or which sibling tools are preferable in other scenarios.

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