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

With no annotations provided, the description carries the full burden and does well: it discloses the scoring weights, that the quote is free, that no purchase is executed, and the exact returned fields. It omits auth/rate-limit details and permission nuances beyond caller_id, which keeps it short of a 5.

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 clause, followed by return values, then the execution workflow and escalation contact. It is dense but every sentence contributes; slightly long but not padded.

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?

With no output schema, the description compensates by naming the return fields (quote_id, chosen supplier, scored candidates, customer_price). With no annotations, it also covers the safety profile (free, no purchase) and the next step. Auth mechanics and error behavior remain unaddressed.

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 80%, so the schema already documents most parameters and a baseline of 3 applies. The description adds light context for caller_id (link to apm_register memory) and category (missing-category escalation), but says nothing about input or max_budget beyond what the schema provides.

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 ('Get a free Agent Procurement Manager quote') and explains the mechanism: task classification, scoring of ≥3 verified suppliers, and pricing. It clearly separates the quote step from the separate execution step (POST /task), so an agent understands this tool does not purchase.

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 explicit when-to-use context ('this tool is free and never executes a purchase') and the follow-on execution path (take quote_id, call POST /task, pay in USDC on Base). It also routes edge cases (questions, bulk needs, missing categories) to the Telegram operator. It does not, however, differentiate against the sibling apm_preview.

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