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

With no annotations, the description must carry the full behavioral burden. It usefully discloses the 50-result cap, that total is the true window count, and that truncated=true signals a cut-off, which is real behavioral context. However it says nothing about read-only semantics, auth/permission needs, rate limits, or latency, leaving the disclosure partially incomplete.

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 line, followed by compact per-parameter notes and a closing pagination note. Nothing is wasted, though the parameter lines partially restate schema defaults, making it slightly denser than strictly necessary.

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?

An output schema exists, so return-value explanation is not required, yet the description still covers the pagination contract (50 cap, total, truncated). Combined with complete coverage of all three parameters, the definition is nearly self-sufficient; only sibling routing/usage guidance is missing.

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 0%, so the description must compensate, and it does: it explains days_within (default 7, max 90), include_events (whether to include info-session signals, default False), and — most valuably — the semantics of the org_nature values ('国央企' expands to central SOEs + local SOEs + banks; '全部' means unrestricted), which the schema does not encode as enums or descriptions.

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 and resource with a clear scope: '列出未来 N 天内截止的招聘项目/岗位' (list recruitment projects/positions closing within N days), and frames itself as the countdown query. It is distinguishable from siblings like search_jobs and whats_new by the deadline filter, but it never names those siblings explicitly.

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?

Usage is implied by the framing as the 'most critical countdown query', but there is no explicit when-to-use/when-not guidance or routing to alternatives such as search_jobs or get_stats. The only actionable guidance is the truncation workaround ('可缩小 days_within'), which is about narrowing, not about tool selection.

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