Fetch Gizmodo's current top stories from its main site-wide listing, returning titles, URLs, summaries, publication times, authors, and lead images.
Get Gizmodo top stories. Returns Gizmodo's current top stories from the main site-wide listing, with no parameters. Each item has its title, URL, summary, publication time, author and 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 full burden. It discloses that there are no parameters and lists the return fields, but it does not mention read-only nature, caching, update frequency, or any other behavioral trait beyond what is obvious from 'Get'.
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 tightly written sentences, front-loaded with purpose and then return details. No wasted words; every sentence adds value.
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?
Given a simple zero-parameter read tool with no output schema, the description adequately explains what is returned. It could mention the number of stories or freshness guarantees, but it is largely complete for the complexity.
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 explicitly notes 'with no parameters,' which is helpful but does not add meaning beyond the empty schema.
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 states a specific verb and resource ('Get Gizmodo top stories') and clarifies scope ('main site-wide listing'). It is clear what the tool does, but it does not differentiate from the sibling gizmodo_headlines, leaving the agent to infer the distinction.
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 implied by the purpose (to fetch top stories), but the description provides no explicit guidance on when to use this tool versus alternatives like gizmodo_headlines. No conditions or exclusions are stated.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.