Fetch one Game Rant author's public profile: name, job title, headshot, biography, social links, and their recent articles. Use gamerant_article for one story's content. Use gamerant_news for current outlet feeds.
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | Canonical Game Rant author URL |
| Name | Required | Description | Default |
|---|---|---|---|
| data | Yes | The tool result payload (shape varies per tool; see each tool's docs resource). |
Changes observed during successful MCP inspections.
Input schema / properties / url / descriptionAdded value: +"Canonical Game Rant author URL"Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds the notion that this is a 'public profile' including recent articles, which is mildly useful, but it discloses no auth requirements, rate limits, or pagination behavior. With annotations doing the heavy lifting and an output schema present, a 3 is appropriate.
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 with zero waste. The purpose and returned contents are front-loaded, and the routing guidance to siblings follows immediately. Every clause earns its place.
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 one-parameter lookup tool with annotations covering safety and a full output schema covering return values, the description needs only to state purpose and disambiguate from siblings, which it does. Nothing an agent needs in order to call it correctly 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 coverage is 100% and the single url parameter is documented as 'Canonical Game Rant author URL'. The description confirms the target is one author but adds no format, ID-vs-URL, or canonicalization guidance beyond the schema. Baseline 3 for a single fully-documented parameter.
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 (Fetch) and resource (one Game Rant author's public profile) and enumerates the returned contents (name, job title, headshot, biography, social links, recent articles). It also distinguishes itself from siblings by explicitly routing to gamerant_article and gamerant_news, so an agent can tell it apart from the other gamerant_* tools without opening schemas.
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?
Explicitly names two alternatives and the conditions that select them: gamerant_article for a single story's content and gamerant_news for current outlet feeds. This is clear when-to-use/when-to-use-something-else guidance rather than implied context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
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