Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description usefully adds what the call returns: live rates with read times, as plain text, plus the page URL to cite. It stops short of mentioning rate limits or pagination, but adds genuine return-context beyond the annotations.

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?

One dense sentence, front-loaded with the resource, and every clause earns its place by clarifying id source and return shape. The parenthetical id examples make it slightly heavy but are not wasted.

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 single-param read tool with an output schema present, the description covers purpose, id provenance, and output form, so the agent has what it needs. Return-value detail is rightly left to the output schema.

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 param is documented as 'An id from search'. The description goes further by illustrating the id namespace with concrete examples (gpu:h100-sxm, provider:runpod, index:h100, reserved, buy-vs-rent), which adds real meaning about valid id forms beyond the 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?

States a specific verb+resource: reads the text of one GPU Economy page identified by an id. It also anchors where that id comes from ('an id from search'), which distinguishes it from the search sibling that produces ids. Not a full 5 because it doesn't explicitly name a competing sibling.

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?

Implies the prerequisite workflow by saying the id comes from 'search', which tells the agent this is a follow-up call. However, there is no explicit when-to-use/when-not or named alternative among the many siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.