update_blocklist

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

Annotations already state idempotency, non-read-only, and non-destructive behavior. The description adds that this is a network download and that the caller receives a size, but it does not disclose whether the existing blocklist is replaced atomically, whether active torrents are affected, or what happens on failure. No contradiction with annotations.

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?

A single efficient sentence with the verb and resource front-loaded. It avoids filler and states the observable outcome in the same breath.

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 0-parameter tool with an output schema and safety annotations, the description adequately covers the core action and result. It could say more about what 'update' means for active state, but nothing essential is missing for invoking it correctly.

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 tool has zero parameters and the schema is complete, so there is no parameter-level burden on the description. The baseline of 4 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?

Clearly states a specific action ('Download a fresh copy of the blocklist') on a unique resource, with a concrete result ('report its size'). It does not explicitly contrast with sibling tools, but none of the listed siblings concern the blocklist, so the resource itself differentiates it.

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?

Provides no explicit guidance on when to use this tool, what conditions require it, or any alternatives. The usage is only implied by the tool name and the description's action, which is a gap for an agent deciding among sibling tools.

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