add_banned_phrases

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

The description reveals the fetch-merge-update pattern and deduplication, which goes beyond the lack of annotations. However, it does not clarify the behavior of the 'dry_run' parameter or potential side effects like atomicity.

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 sentence that is concise and front-loaded with the main action. No superfluous words.

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 description covers the core operation but lacks explanation of the 'dry_run' parameter, which is essential for understanding tool behavior. For a simple tool with 2 params, this is a notable gap.

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?

With 0% schema coverage, the description should explain both parameters. It adds meaning for 'phrases' (append, no duplicates) but completely omits 'dry_run', leaving its purpose unclear.

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 verb 'append' and the resource 'chat blacklist', and distinguishes the operation as additive with deduplication. Sibling tools include various chat actions but none specifically for banned phrases, so the tool is well-differentiated.

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 explicit guidance on when to use this tool versus alternatives. The description explains the internal mechanism but does not provide usage context, exclusions, or mention related tools.

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