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

No annotations are provided, so the description carries the full behavioral burden, and it discloses almost nothing: no indication that this is a read-only comparison, no determinism/idempotency statement, no auth requirements, no note on what a 'drift' finding triggers. The only extra fact is the 0.002 USDC price, which is useful cost context but not behavioral disclosure.

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 a single front-loaded clause with no filler; the purpose comes first and the price is appended compactly. It is arguably too terse rather than verbose, which is an under-specification problem rather than a conciseness one.

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?

An output schema exists, so return-value explanation is not required, but for a two-input comparison tool the description never clarifies what the inputs represent or what class of drift it covers. Against ~60 siblings with overlapping manifest/tool-integrity functions, the definition leaves the agent without enough to invoke it correctly or confidently.

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?

With schema description coverage at 100%, the schema is expected to document the two required inputs, so a baseline of 3 is appropriate. The description adds nothing about what 'baseline' and 'current' should contain (manifests? capability snapshots? versions?), which is the one thing a drift tool most needs to clarify.

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 verb (detect) and object (tool capability or manifest drift), so the purpose is more than a tautology. However, it gives no differentiation from close siblings such as manifest_version_diff, mcp_manifest_firewall, or tool_output_firewall, which an agent must choose between. The phrase 'capability or manifest drift' is broad enough to overlap with several of them.

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 when-to-use guidance, no prerequisites, and no named alternative. The agent is left to infer from the name alone that this compares a prior state against a current state, and nothing tells it when manifest_version_diff would be the better pick.

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