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

The annotations already mark this as a read-only, non-open-world operation. The description adds meaningful scope context: it only works with tracked servers and not arbitrary URLs, and it explains that at selects a snapshot while diff_from compares versions. It does not cover error behavior or authentication requirements, but those are not critical here.

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 short and front-loaded: usage condition first, parameter semantics next, and exclusion last. Every sentence adds useful information without repetition.

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 read-only retrieval tool with no output schema and six optional parameters, the description covers the main usage modes, scope restriction, and snapshot/diff selection well. It could say more about default behavior when no app/server is supplied or about returned data shape, but the essential invocation guidance is present.

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 high (83%), so the schema already documents most parameters. The description adds conceptual semantics for at ('selects a past snapshot') and diff_from ('compares versions') beyond the schema's brief field descriptions, though it does not explain app, server, context, or response_format.

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 states a clear resource and scope: it retrieves stored MCP tools or changes for a tracked app or server. It distinguishes itself from arbitrary URL fetching, though it does not explicitly differentiate from any sibling tool by name.

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?

It gives an explicit use case ('when you need a tracked app or server's stored MCP tools or changes') and an explicit exclusion ('Do not use for arbitrary URLs'). It also explains the at and diff_from modes, but does not name alternative tools for related tasks.

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