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

readOnlyHint=true already tells the agent this is a safe read with no side effects. The description usefully adds the default (external) and the underlying endpoint paths, but says nothing about pagination, result volume, or auth context for what is framed as an 'export'.

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?

Two tight sentences with the default scope front-loaded before the alternative. The raw HappyFox endpoint URLs are marginally useful for debugging but are the only borderline filler.

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 read-only, zero-required-parameter lister whose safety profile is carried by annotations and whose only parameter is fully documented in the schema, the description covers what an agent needs. The one omission is any hint about result volume or paging for an 'export' operation.

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% and the single boolean parameter is already documented there, so the baseline is 3. The description's external/internal wording mirrors the schema rather than adding format or paging semantics beyond it.

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?

States a specific verb and resource (export the knowledge base articles) plus the default scope (external/customer-facing) and the optional mode (internal/agent-only). No sibling tool touches the knowledge base, so an agent can route here unambiguously.

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?

The description effectively partitions usage: use it as-is for customer-facing articles, set internal=true for agent-only articles. It does not name exclusions or alternative tools, but with a single boolean mode switch the selection rule is fully stated.

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