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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered by structured data. The description earns credit for adding information the annotations cannot: a concrete token cost (~3440 tokens per 20 postings) and the pagination unit of 20. The note that 'a posting can be old while still hiring' is useful but phrased in a way that is easy to misread.

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?

Labeled Purpose/When/Cost sections front-load the key information, and each line adds something (scope, trigger, cost). The first sentence is long and chains several clauses together, which slightly hurts readability, but nothing is truly redundant.

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 and annotations cover the safety profile, so the description only needs the operational details: pagination, default filtering, and cost, all of which are present. A mention of how monitorId relates to monitor_list would complete the picture, but the schema notes that already.

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 schema already documents all three parameters at 100% coverage, so the baseline is 3. The description goes further by restating that page is 1-based with 20 postings per page and by spelling out what an unset state means in user terms (postings not yet decided on) versus the handled/set-aside alternatives, which links the enum values to intent.

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 opens with a specific verb and resource: it shows a single monitor plus its counts and a page of its collected postings, which distinguishes it from the sibling monitor_list. It stops short of naming any sibling explicitly, so the differentiation is implied by 'one monitor' rather than stated.

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 'When' line gives clear trigger conditions (user asks what a monitor found, or wants to see already-decided postings), and the default-state rule tells the agent the common case. It does not name alternatives such as monitor_list or job_postings_search for cases where the user wants raw postings instead.

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