update_readlist

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

As no annotations are provided, the description carries the full burden of behavioral disclosure. It mentions the ADMIN requirement, which is useful, but it does not disclose whether the operation is destructive, reversible, or what side effects might occur on existing data. For a mutation tool, this is a significant 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 extremely concise with only two sentences, both of which earn their place: the first states purpose, the second notes the ADMIN requirement. However, it is arguably too terse given the tool's complexity, but this dimension rewards brevity and there is no fluff or redundancy.

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 the open-ended 'patch' object and lack of annotations, the description is critically incomplete. It does not explain the patch format, what fields are updatable, or the semantics of the update operation. While an output schema exists, it does not compensate for the missing guidance on the input parameter, which is essential for correct usage.

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 schema has 0% description coverage, and the description adds no meaning to the parameters. The 'patch' parameter is particularly ambiguous—it is an arbitrary object (additionalProperties true), but the description does not clarify whether it is a partial merge, a replacement, or a JSON Patch. The agent is left with only the parameter names, which is insufficient for correct invocation.

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 tool's action ('Update a readlist') with a specific verb and resource, distinguishing it from sibling tools like create_readlist and delete_readlist. However, it lacks detail on what aspects of a readlist can be updated, making it slightly less specific than an ideal purpose statement.

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 or any preconditions beyond the ADMIN requirement. The description does not mention context, exclusions, or related tools, leaving the agent to infer usage solely from the name.

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