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

Annotations already declare readOnlyHint/idempotentHint/non-destructive, so the safety profile is covered. The description adds genuinely new behavioral context: the tool performs no navigation itself and the return value carries the path to append to https://1lev1.com, which is exactly what an agent needs to know before calling it.

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?

Front-loaded with the purpose and the key caveat, then parameters, then the sibling pointer and docs link. The semicolon-chained sentence is dense but every clause carries information; a small trim is possible but nothing is filler.

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-output-schema, three-parameter link builder, the description covers purpose, non-side-effect behavior, parameter usage, result shape, and where to find valid inputs. Nothing an agent needs to invoke it correctly 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 coverage is 100% (baseline 3), and the description goes further by giving concrete path examples ('/lev') and clarifying the relationship between url and idPr ('/moach/<projectId>' with idPr), which the schema alone does not spell out. It stops short of full format/validation detail.

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+resource ('turn a 1lev1.com page into a link') and immediately disambiguates scope with 'it does not open anything by itself'. An agent can tell this apart from siblings like getSitePagesTool or openRikmaConversationTool without opening a schema.

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?

Explains the intent (produce a link to give the user) and points to the alternative for enumerating paths ('getSitePagesTool lists the valid paths'). No explicit when-not condition is given, but the operating context is clear enough to select correctly.

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