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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is covered. The description adds genuinely useful context that the tool does not mutate anything itself but instead produces a link the user must click, which is the key behavioral nuance. It omits how long the link is valid, whether repeated calls return the same link, and what the user sees.

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?

One sentence, no filler, and the substantive information (click-ready link, grants more tiers) is front-loaded. Nothing to trim.

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 one-parameter tool with no output schema, the description is close to adequate but leaves the most consequential detail open: what values 'tiers' accepts. Whether the returned link appears in the result body or elsewhere is also unstated, though the word 'Returns' implies it is the primary payload.

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 0% and the single property is an array of untyped strings described only as 'Tier'. The description says 'permission tiers' but gives no valid tier names, no format convention, and no indication whether these are cumulative or absolute. Since the schema carries essentially nothing, the description needed to compensate and does not.

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 concrete verb-plus-result: returns a click-ready link that lets the user grant additional permission tiers to the current connection. That clearly separates it from a listing tool like list_granted_scopes, though it never names a sibling. Slightly reduced because 'this connection' is not defined and the tool's own role (generate a URL vs. actually escalate permissions) takes a sentence to parse.

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 only implied: an agent infers it should call this when a call fails for insufficient permissions or when more tiers are needed. There is no explicit 'use when X', no mention of checking list_granted_scopes first, and no note that the user must actually click the link before the new scopes take effect.

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