Qvac Fetch

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

With no annotations, the description carries the full burden of behavioral disclosure. It mentions 'allowlisted' (restrictions) and 'plain text' (output format), but does not cover error conditions, authentication, rate limits, or the behavior of the max_chars parameter. This is insufficient for a tool with no structured behavioral metadata.

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 two concise sentences with no filler. The primary action is front-loaded, and the reference to qvac_index is efficient and relevant.

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 purpose and gives a critical usage hint (use qvac_index URLs). However, it omits details about max_chars, error handling for non-allowlisted URLs, and the exact response structure, making it only minimally adequate for a two-parameter tool with no annotations or output schema.

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 description coverage is 0%, so the description must compensate. It does not explain either parameter beyond implying url comes from qvac_index, and it completely ignores max_chars. No parameter semantics are provided.

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 a specific action (Fetch), a specific resource (one allowlisted QVAC page), and the output format (plain text). It also references qvac_index as the source for URLs, which helps differentiate it from listing/searching tools.

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 provides clear context by directing the agent to use URLs from qvac_index, implying a prerequisite step. However, it does not explicitly state when not to use this tool or compare it to alternatives like qvac_search, so it falls short of full usage guidance.

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