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

With no annotations provided, the description carries the full burden. It transparently describes the response content (changes, hashes, drift rate) but does not disclose whether the operation is read-only, any side effects, error behavior, or potential rate limits. While the content is well-specified, the lack of an explicit safety profile or failure mode information is a gap.

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 concise, using two sentences that each serve a distinct purpose: the first establishes the core function and scope, the second elaborates on the change format and the comparative drift rate. It is well-structured and front-loaded, with no redundant or vague wording.

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 simple 2-parameter tool with no output schema, the description covers the main output type but leaves parameter semantics unclear, especially the 'days' parameter. It also does not address error conditions (e.g., unknown server name) or the exact response structure beyond the mention of hashes. Given the lack of annotations, it is moderately complete but has notable gaps.

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%, so the description must compensate. It mentions 'for one MCP server', which hints that 'name' identifies the server, but it does not explain the 'days' parameter at all—its meaning, default, or valid range are omitted. The time-window semantics are only vaguely implied by the notion of 'changes recorded'.

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 clearly states the tool retrieves changes recorded for one MCP server, specifically tool definition changes and endpoint status changes. It distinguishes itself from siblings like get_server_tools (which lists current tools) and search_servers by focusing on change history, and it details what each change contains (tools moved, fields differed, hashes).

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?

The description implies the tool is for viewing change history, but it does not explicitly state when to use it over alternatives like watch_server (real-time monitoring) or get_server_tools (current state). No when-not-to-use guidance or alternative references are provided, leaving the agent to infer applicability from the content.

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