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

With no annotations at all, the description carries the full behavioral burden, and it delivers only the required batch format and the platform options. It says nothing about pagination behavior, result ordering, rate limits, authentication, or what happens when gte/lte conflict with batch — all material for a 6-parameter feed query.

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 core sentences are front-loaded and efficient, but the trailing HTTP response boilerplate ('**200**: Successful Response ... Content-Type: application/json') is generated noise that adds nothing for an agent choosing or calling the tool.

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?

There is no output schema and no annotations, so the description is the only source of behavioral detail, yet it omits the response shape, pagination semantics, and the role of gte/lte relative to the required batch date. For a six-parameter feed tool this leaves the agent guessing on several call-shaping decisions.

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 67%, so the schema already documents batch and platform formats, and the description largely repeats those rather than adding meaning. The four date-range and pagination parameters (gte, lte, page, page_size) receive no explanation in either place beyond their titles, leaving the coverage gap unfilled.

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 uses a specific verb and resource ('Get the Tor onion site feed from Vysion') and states the payload ('recently detected .onion domains'), which distinguishes it from siblings like get_telegram_feed or get_ransomware_feed. It stops short of explicitly contrasting itself with those feeds, so it lands at clear-but-not-differentiating.

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?

Usage is only implied: the reader infers this is the tool for onion-domain feeds and that 'batch' must be supplied as a date. There is no statement of when to prefer this over the other feed tools, no prerequisite or exclusion guidance, and no note on how the platform values change results.

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