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

Annotations already cover read-only and open-world access, and the description adds two things they do not: the exact content returned (profile fields plus every outbound link, in order) and that each call costs 1 credit. It stops short of disclosing error behavior for private/deleted pages or what the cache_max_age window controls.

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?

Two short sentences with no filler; the returned-content list is the useful payload and comes early. The leading 'Milkshake page.' sentence is pure repetition of the title and could be dropped.

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 does the right thing by enumerating returned fields, which is the biggest gap it could have filled. However, it leaves the cache_max_age parameter undefined and says nothing about failure modes, so an agent calling with a bare username or an unusual cache value has no guidance.

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 only 50%: url is documented in the schema with a concrete format example, but cache_max_age has no description anywhere. The description adds no parameter information at all — it never mentions the accepted URL/username forms or what cache_max_age does, so it fails to compensate for the coverage gap.

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 second sentence is specific: it returns a public creator profile with display name, bio, avatar, and ordered outbound links, which is exactly what an agent needs to know. The opening 'Milkshake page' merely restates the name, and nothing distinguishes it from the many sibling link-in-bio tools (linktree_page, linkbio_page, solo_page, taplink_page, etc.) beyond the brand.

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: fetch a public msha.ke page. There is no statement of when to prefer this over linktree_page/linkme_page/komi_page for the same kind of data, and no note on what happens for private or nonexistent pages. The credit-cost note gives a hint of cost-awareness but is not usage routing.

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