Daily minimum rental price history for a GPU (recorded daily since 2026-07-06).
| Name | Required | Description | Default |
|---|---|---|---|
| gpu | Yes | GPU name, e.g. "H100 SXM" or "RTX 4090" | |
| days | No | how many most-recent days to return (default 30) |
Changes observed during successful MCP inspections.
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It mentions data is daily since 2026-07-06, but does not disclose behavior like error handling, output format, or what a missing GPU entails.
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?
Single sentence, concise, and front-loaded. Could add more structure but efficient.
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?
Description covers purpose and time range but lacks details on return format, pagination, or error cases. Adequate for simple tool but not fully complete given no 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%, so baseline is 3. The description adds minimal context (daily, since date) but does not elaborate on parameter usage beyond 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?
Description clearly states it returns daily minimum rental price history for a GPU, specifying the resource and action. It does not explicitly differentiate from siblings like 'get_model_prices', but the purpose is clear and specific.
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?
No guidance on when to use this tool versus alternatives such as 'cheapest_gpu' or 'get_model_prices'. The description lacks any context for selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
