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

Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=false, and the description merely restates "destructive write operation." It adds one genuinely useful detail — the unusual GET method and the confirm=true gate — but discloses nothing about reversibility, downstream effects, or auth requirements beyond what structured fields provide.

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 the action and followed by constraints, with no filler. The endpoint path is slightly boilerplate but still compact overall.

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?

Given annotations that already carry the full safety profile, a schema at 86% coverage, and no output schema, the description covers the essentials an agent needs. The missing element is any statement about recoverability or consequences of the deletion, which matters for a destructive tool.

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 86%, so the confirm and credential/base_url parameters are already documented in the schema itself. The description adds no syntax, format, or meaning beyond what the schema provides; baseline 3 applies.

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?

States a specific verb and resource ("Deletes an expense") and even names the exact endpoint, so the operation is unambiguous. It does not explicitly differentiate itself from siblings like update_expense or archive_* tools, but the delete intent is self-evident from the name and text.

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 use this tool versus alternatives (e.g., how it differs from update_expense or whether a soft-delete/archive path exists). The only conditional information given is the confirm=true requirement, which is a precondition rather than usage guidance.

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