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

Annotations already declare readOnlyHint, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description still adds non-obvious behavior: this renders an MCP App surface in compatible hosts, and it performs no payments, external fetches or operational actions. That host-compatibility caveat is real information an agent cannot get from the structured fields.

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, front-loaded with what is returned, followed by the behavioral caveats. No filler, no restatement of the tool name, and each clause carries distinct information.

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 and a single optional parameter, the description covers the return content and the rendering mode adequately. The gap is the undocumented 'protocol' argument, which is the only lever an agent has to shape the response, plus no indication of whether results are paginated or scoped to the 16 entries.

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?

There is one parameter, 'protocol', with 0% schema description coverage and no enum, and the description never mentions it. An agent cannot tell from either source whether it is a free-text name, a slug, or whether omitting it returns the full catalogue of 16. The maxLength of 60 is the only hint and it lives in the schema.

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 names a specific resource and payload: '16 source-backed protocol explanations and the implementation status on rinatsultan.com.' That is concrete enough to separate it from siblings like get_profile or get_case_study. It stops short of explicitly contrasting itself with the closest read-oriented sibling, search_public_ai_pages.

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 rather than stated: an agent infers it should call this when it needs protocol explanations. The one genuinely useful precondition supplied is 'Opens a read-only MCP App in compatible hosts,' which warns that rendering depends on host support. There is no when-not guidance and no mention of how the optional protocol filter changes the call.

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