Retrieve Barron's stories from every section as a current news feed, returning each item's title, canonical URL, and publication time.
Get the latest Barron's stories. Returns Barron's current cross-section news feed: the newest stories across every section, each with its title, canonical URL, and publication time.
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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 provided, the description carries the full burden of behavioral disclosure. It explicitly states what is returned (title, URL, publication time) and that it is the newest stories across every section, giving agents a clear picture of the output. It does not mention any side effects or limitations, but for a read-only news feed this is adequate.
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 fluff. The purpose is front-loaded in the first sentence, and the second adds specific output details. Every word contributes 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 no parameters and no output schema, the description is fairly complete: it tells the agent exactly what will be returned (title, URL, time) and the scope (across every section). It does not mention pagination or limits, but for a simple feed tool this is sufficient. Slightly more detail on ordering or whether all stories are returned could improve it, but it is adequate.
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 description does not need to explain parameter semantics. The input schema is trivially complete, and the description adds no param info, which is appropriate. The baseline for zero-parameter tools is 4.
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 the verb 'Get' and the resource 'the latest Barron's stories', and specifies it returns a cross-section feed with each story's title, canonical URL, and publication time. It distinguishes this from sibling tools like barrons_article (single article) and barrons_headlines (headlines only) by emphasizing the cross-section nature and full metadata.
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: it is a general feed of the newest stories across every section, implying use when a broad overview of Barron's content is needed. It does not explicitly name alternatives or state when not to use it, but the feed nature makes the intended usage obvious.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.