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

The description adds 'permanently delete' and 'requires explicit user confirmation,' which are meaningful behavioral traits beyond the annotations' destructiveHint and readOnlyHint. It reinforces irreversibility and user-consent requirements, though it does not mention potential side effects or permission prerequisites.

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 concise sentences front-load the core purpose ('Permanently delete a journal entry') and then state the confirmation requirement. No filler words or redundant information; every sentence earns its place.

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 deletion tool with full schema coverage and destructiveHint annotation, the description adequately covers purpose and key behavioral requirements. It does not explain return values or error behavior, but the lack of an output schema and the simplicity of the operation make this a minor gap.

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 100%, so all three parameters (id, company, confirm) are already documented. The description's mention of explicit user confirmation essentially mirrors the schema's confirm parameter description and adds no additional parameter-specific meaning.

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 the specific verb 'delete', the resource 'journal entry', and the system 'QuickBooks Online', with 'permanently' clarifying the destructive nature. This clearly distinguishes it from siblings like create_journal_entry, update_journal_entry, get_journal_entry, and search_journal_entries.

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?

No guidance is given on when to use this tool versus alternatives such as update_journal_entry for modifications or void operations for reversible actions. The only hint is the verb 'delete', which implies purpose but does not explicitly state selection criteria or exclusions.

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