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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is covered. The description adds ordering behavior ('Newest first as Street orders them') and pagination mechanics, which is useful. It does not mention rate limits, auth, response format, or that dates can filter by creation/update, leaving the description only modestly additive over annotations.

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 two compact sentences with no filler, and it front-loads the resource definition followed by ordering and pagination. The trailing 'GET /landlords' is mildly redundant but useful for API-aware agents. Overall it is efficient and well-structured.

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 13 optional parameters fully covered by the schema, no output schema, and annotations that already signal a safe read, the description only needs to establish purpose, ordering, and pagination. It does that. It could go further by hinting at the landlord record shape or the available filters (address, status, dates) to help an agent choose parameters, but nothing critical 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 100%, so every parameter is already documented in the schema. The description mentions page and page_size but adds no syntax, default, or filtering semantics beyond what the schema provides. Baseline 3 is correct when the schema does the heavy lifting.

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 gives a specific verb ('List') and resource ('landlords') and adds a clarifying parenthetical that landlords are people letting a property. That definition helps distinguish the tool from the generic people endpoints. It does not explicitly name or differentiate against siblings such as street_list_people or street_get_landlord, 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?

Usage is implied by the list framing, and the description adds pagination guidance ('page with page and page_size'). However, it gives no explicit when-to-use versus alternatives, no exclusions, and no mention of when a single landlord lookup (street_get_landlord) or a broader people listing would be preferable. This is adequate but thin for a 13-parameter sibling-rich tool.

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