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

With no annotations, the description carries the burden, and it does add real signal by disclosing that this scrapes an HTML feed (hence the row-parsing limit) rather than using an API. It says nothing about auth requirements, rate limiting, failure behavior, or what a parsed result looks like, which matters for a scraping tool.

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 with zero padding, front-loading the verb, the resource, the host, and the valid targets. Every element earns its place.

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 should clarify the return shape (parsed rows) and the effect of story_limit on results. It covers what can be browsed but leaves the response contract and selection guidance largely implicit, which is only just adequate for a 3-parameter scraping tool.

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%, so the schema already documents all three parameters, and the description's feed list merely repeats the feed_name enum values verbatim. It adds no meaning for story_limit or notification_message beyond what the schema states, so the baseline of 3 applies.

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 (browse) and resource (an HTML feed on news.ycombinator.com) and enumerates the valid feed targets, so the action is unmistakable. It does not differentiate itself from siblings like top_stories, best_stories, or new_stories, which appear to cover overlapping feed content via a different mechanism.

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: reading HN pages. There is no statement of when to prefer this over top_stories/new_stories/best_stories, nor any exclusions or prerequisites (e.g., whether login is needed). The agent must infer the alternatives itself.

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