asin_fingerprint

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

With no annotations, the description carries the transparency burden. It discloses the extraction scope, provenance tracking, and the reporting of critical unknowns that block downstream matching. However, it leaves side effects (e.g., caching, writes) unspecified.

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?

Purpose is front-loaded in the first sentence, followed by a compact extraction list and a clear usage trigger. No redundant text; every sentence 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?

Covers what it does, what it consumes, when to invoke it, and what blockers it reports. Lacks an explicit return structure, but the extracted-field list and 'reports critical unknowns' provide sufficient expectations for an agent.

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?

The input schema has no parameter descriptions (0% coverage), but the Args section adds meaningful constraints: ASIN's 10-character alphanumeric format and marketplace default value. This compensates for the schema gap, though marketplace allowed values are not detailed.

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?

Clearly states it builds a normalized product fingerprint from an ASIN's product_detail, enumerating the specific extracted fields and tying it to the 1688 supplier matching workflow. The verb 'Build' and the output concept 'fingerprint' distinguish it from scoring or analysis sibling tools.

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?

Provides an explicit trigger condition: 'Starting the 1688 supplier matching workflow for an ASIN.' It gives clear context for when to use the tool but does not mention when not to use it or name alternative tools for other workflow stages.

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