Fetch the top 20 MacRumors stories with titles, URLs, authors, publication times, and summaries. Use it to track Apple news with no parameters required.
Get MacRumors top stories. Returns the latest 20 stories across MacRumors, with no parameters. Each item has its title, canonical article URL, author, publication time and a plain-text summary of about 300 characters. Items carry no lead image.
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Changes observed during successful MCP inspections.
v1.17.5Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral burden and does well: it discloses that the tool returns exactly the latest 20 stories, lists the returned fields, gives the summary length, and notes that items carry no lead image. It does not explicitly state read-only behavior or freshness cadence, but the fetch-and-return behavior is clear.
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?
Three compact sentences, front-loaded with the core purpose and then the return shape. Every sentence adds useful information, including the no-parameter constraint and the absence of lead images.
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 simple parameterless news-feed tool with no output schema and no annotations, the description provides enough detail to invoke it and interpret the results. It covers count, fields, summary length, and missing images, though it could add a word about update cadence or ordering beyond 'latest.'
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?
The tool has zero parameters, so the baseline is 4. The description reinforces this by explicitly saying 'with no parameters,' leaving no ambiguity about invocation.
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 gives a specific verb and resource ('Get MacRumors top stories') and scopes it to the latest 20 stories across MacRumors. It is clear what the tool returns, though it does not explicitly distinguish itself from sibling tools such as macrumors_headlines or macrumors_news.
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?
It states that the tool takes no parameters, which implies a simple default fetch, but it gives no guidance on when to use this tool versus macrumors_headlines, macrumors_news, macrumors_article, or macrumors_sections. There are no exclusions or alternative-selection rules.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.