Lists Barron's editorial topics with slug, name, and URL, so you can use each slug as a section value for /barrons/headlines.
List Barron's topics. Lists Barron's editorial topics, each with its slug, display name and landing-page url. The list is long and changes over time. Every slug is a valid section value for /barrons/headlines. Takes no parameters.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
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 and does a decent job: it discloses that there are no parameters, that the list is long, and that it changes over time (a volatility warning an agent should heed). It omits auth/rate-limit details, but for a simple read-only enumeration the disclosure is solid.
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?
Four short sentences, front-loaded with the core action and then the useful downstream detail. The opening two sentences overlap ('List Barron's topics' / 'Lists Barron's editorial topics'), a minor redundancy that costs a point.
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?
No output schema exists, so the description correctly fills that gap by naming the returned fields and their purpose. Combined with the no-parameter statement and the volatility note, an agent has enough to call and use it, though a hint about the list's size/ordering would round it out.
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 takes zero parameters, so the baseline is 4. The description redundantly confirms 'Takes no parameters', which adds no meaning beyond the empty schema but is not misleading.
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 (List) and resource (Barron's editorial topics) and enumerates the returned fields (slug, name, url). It also implicitly separates itself from barrons_headlines by framing its output as input for that endpoint, so an agent can tell the two apart.
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 tells the agent what the result is for ('Every slug is a valid section value for /barrons/headlines'), which is clear conditional context. It does not explicitly name an alternative tool or state when-not-to-use, so it stops short of full routing guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.