Fetch public Ars Technica article metadata and body paragraphs from a canonical URL without bypassing access controls.
Get Ars Technica article content. Returns public Ars Technica article metadata and body paragraphs from a canonical article URL. The service does not bypass authentication or access controls.
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | Canonical Ars Technica article URL |
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 disclose useful behavior: what is returned (public metadata and body paragraphs) and an explicit access limitation ('does not bypass authentication or access controls'), which sets expectations around paywalled or gated content. It omits rate limits, failure modes for malformed/non-canonical URLs, and whether any caching applies.
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 short sentences, front-loaded with the action, then the return payload, then the access caveat. No filler, though the final sentence reads as boilerplate that could be trimmed or merged.
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, so the description usefully enumerates the return payload (metadata and body paragraphs), and with no annotations it also supplies the access-control caveat an agent needs to anticipate paywalled results. It lacks error/edge-case behavior, but nothing critical for correct invocation is missing.
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 description coverage is 100% and the single url parameter is already documented as 'Canonical Ars Technica article URL'. The description repeats the same 'canonical' framing without adding format examples or constraints, so the schema does the heavy lifting — baseline 3.
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 (Get) and resource (Ars Technica article content) and specifies the retrieval unit — metadata plus body paragraphs — keyed off a canonical article URL. This cleanly separates it from the sibling listers arstechnica_headlines, arstechnica_news, arstechnica_sections and arstechnica_author, which return collections rather than a single article body.
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 requirement of a 'canonical article URL' implies the tool is for fetching an article you already have, but there is no explicit when-to-use versus when-not guidance and no named alternative (e.g. use arstechnica_headlines to discover URLs first). Usage is inferable but not stated.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.