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

With no annotations, the description carries the full behavioral burden. It does disclose a meaningful operational trait — '1 point per returned record' — which is useful cost/rate-limit context an agent can act on. However it says nothing about result limits beyond the schema, pagination, or whether the search is a plain read, leaving notable gaps.

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?

Two compact clauses with the search scope front-loaded and the cost note appended; nothing is wasted. It is appropriately sized for a simple two-parameter search tool.

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 simple search tool with no output schema and no annotations, the description gives the searched resource, the returned fields, and the cost model, which is reasonable coverage. It stops short of stating limits, pagination behavior, or how results are ordered, leaving the agent to infer those.

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% for the two parameters (keyword with an example, count with default and max), so the schema already documents everything. The description adds no syntax, format, or filtering nuance beyond the schema, making the baseline 3 appropriate.

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?

Names a specific verb (search) and resource (Alibaba products) and lists the returned data domains (price, MOQ, supplier, certifications), which tells an agent what it will get back. It does not explicitly contrast with the sibling run_alibaba_product, but the platform+verb combination is distinctive enough to separate it from the many other marketplace search 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?

There is no when-to-use guidance: nothing says when to prefer this over run_alibaba_product or over the other marketplace search siblings (aliexpress, amazon, etc.). The only usage-adjacent information is the billing note, which tells the agent cost, not selection criteria.

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