get_competitive_pricing

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

With no annotations provided, the description does convey that it's a read operation (no destructive hint) and that it's a stub for introspection. It adds context about the data scope (live + historical). However, it does not disclose rate limits, authentication, or pagination behavior, which would be expected for a read tool.

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?

The description is two sentences, each serving a distinct purpose: stating the function and clarifying the hosting limitation. No unnecessary words or redundancy.

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?

The tool has 7 parameters (all optional) and no output schema. The description only mentions live and historical pricing, which is adequate but does not specify the return format, data structure, or typical use cases. Given the complexity of pricing data and the number of parameters, the description could provide more context to help the agent decide when to invoke this tool.

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%, so the schema already documents each parameter. The description adds no extra meaning beyond what is in the schema (e.g., no hints on which parameters are commonly used together or how they affect the output). Baseline 3 is appropriate as the description does not degrade parameter understanding.

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?

The description clearly states the tool reads 'Live price points plus historical pricing snapshots', indicating a specific verb and resource. However, it does not differentiate from sibling tools like get_offer_listings or get_buybox_status that also involve pricing, so it's not perfectly distinctive.

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 mentions it's a 'Hosted endpoint only; this local stdio server is an introspection stub', which implies it's not functional locally. However, it provides no explicit guidance on when to use this tool versus alternatives (e.g., when historical pricing is needed vs. live prices).

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