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

With no annotations, the description carries the full transparency burden, and it discloses only cost and scope ('$4.99/server up to 25 tools'). It says nothing about whether the tool is read-only, whether it contacts an external service, authentication needs, or what the scan produces — all material for an agent deciding to call a paid operation.

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?

It is short, but the brevity comes from ellipsis rather than efficiency: the fragment 'Enum schema-vs-upstream differ scan' omits the article, verb framing, and object needed to parse it, and the pricing clause is tacked on without connecting to behavior.

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 paid, no-annotation tool with two entirely undocumented parameters and no output schema, the description leaves an agent unable to predict what it will receive or how to populate arguments. The only genuinely useful information is the cost model.

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 explain the two parameters, but it never mentions server_id or the tools array. The phrase 'up to 25 tools' hints at the tools parameter's bounds without stating that it is a parameter or what its elements are.

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 phrase 'schema-vs-upstream differ scan' does name a specific computation (diffing a local schema against an upstream source), but it is compressed into jargon-heavy shorthand with the verb reduced to 'Enum'. It never says what the scan returns or what 'enum' enumerates, so the purpose is inferable but not stated plainly.

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?

There is no guidance on when to run this scan, what prerequisites exist, or how it relates to siblings like receipt_query and record_rejection. The pricing clause is the only context given and it does not help an agent decide whether to invoke the tool.

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