update_list

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Update' implies mutation, but the description does not state whether updates are partial (only provided fields) or require all fields, whether the operation is idempotent, whether it requires ownership/permissions, or what the response looks like. For a mutation tool with zero annotation coverage, this is under-disclosed.

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 efficient sentence that communicates the core purpose without waste. It is appropriately concise but leaves room for more behavioral/usage detail that would be valuable.

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 mutation tool with no annotations and no output schema, the description is notably thin. It doesn't clarify the update semantics (full vs partial update), the meaning of 'segment' in the description, requirements around the required fields, or whether sequence is optional for a reason. With 4 parameters and mutation semantics, more context should be provided.

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 the schema already documents all four parameters with descriptions. The description adds nothing beyond the schema: it doesn't clarify the 'icon' values, what 'sequence' affects, or how id, title, and icon relate. Baseline 3 is appropriate when the schema carries the parameter documentation load.

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 'Update an existing list/segment' states the verb (update) and resource (list/segment), which is clear enough. However, it doesn't distinguish details from sibling update_* tools beyond naming the resource, and the sibling set includes delete_list, create_list, get_list, get_lists - so context helps. The verb+resource is specific, so purpose is mostly clear.

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 on when to use this tool versus alternatives (create_list, delete_list, get_list). It doesn't mention when lists should be created vs updated, when a list must exist first, or any prerequisites such as needing an existing ID. No exclusions or alternatives are named.

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