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

With no annotations, the description carries the full burden and does disclose the notable behavioral fact that the tool is paid ($0.05 USDC on Base via x402), which is real value. But it omits permission/auth needs, the detection window or comparison baseline, rate limits, and return shape—all material for a change-detection call.

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?

Three dense sentences, no filler, with purpose and change types presented up front. Leading with the payment note is slightly awkward ordering but not wasted text.

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 one-parameter, no-output-schema tool this covers purpose, cost, and use cases adequately, but it leaves the agent without any guidance on the comparison period, output structure, or payment mechanics, which are the practical unknowns for actually invoking it.

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 0% and the description never explains the single `company` parameter—no format, identifier convention, or examples. The only faint signal is the generic 'X' in the use-case phrasing, which does not compensate for the undocumented input.

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: detects hiring changes against history, with three concrete change types (new roles, removed roles, team/location shifts). The 'vs history' framing implicitly separates it from the point-in-time siblings like hiring_snapshot, but no sibling is named explicitly, so it falls short of a 5.

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?

Offers clear trigger scenarios ('did X just start/stop hiring', new postings, recruiting trends, downsizing alerts), which is strong context. However, it never says when NOT to use it or which sibling to pick for adjacent needs (e.g., snapshot vs landscape), so alternatives are left to inference.

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