rental_bids_lowest_price

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

With no annotations, the description carries the full burden and does well: it discloses preservation of the price string, absence of transformations, single GET request, no auto-fetching of continuation pages, local row/size limits with truncation reporting, and refusal of oversized records. It does not mention authentication or rate limits, but as a public endpoint this is acceptable. The disclosure is detailed and goes beyond a generic read operation.

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?

The description is a single dense paragraph with no wasted words; each sentence adds a specific behavioral constraint or clarification. It front-loads the main purpose and then lists limitations. It is efficient and well-structured, though slightly long due to the number of caveats, but each is relevant.

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 no-parameter read endpoint, the description covers the essential behavioral aspects: what it does, what it avoids, pagination behavior, response limits, and truncation reporting. The only gap is the confusing mention of 'required inputs' and 'declared filters' that do not align with the empty schema. There is no output schema, so the description need not explain return structure. Overall, it is sufficiently complete for an agent to call the tool correctly.

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 has zero properties, so there are no parameters to document. However, the description mentions 'Required inputs reflect tool policy' and 'Other declared filters are forwarded as supplied', implying the existence of inputs/filters that are not present in the schema (which also has additionalProperties: false). This is confusing and potentially misleading, as the schema explicitly disallows any parameters. The description does not clarify what these inputs are, so it fails to add meaningful parameter semantics and introduces ambiguity.

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 clearly states the tool reads the 'public V3 delegation rental bids lowest-price endpoint', specifying a precise verb, resource, and scope. It distinguishes itself from sibling tools like 'rental_bids' and 'rental_offers_lowest_price' by explicitly mentioning 'lowest-price' and 'delegation rental bids', making its purpose unambiguous.

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 description implies usage for reading lowest-price rental bids but does not explicitly contrast with alternatives or state when to prefer this tool over siblings. It mentions what it does not do (no unit conversion, no pagination) but lacks clear when-to-use/when-not-to-use guidance. The absence of explicit alternatives leaves the agent to infer usage context.

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