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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds that text is page-numbered and derived from an indexed source ID, which is useful context, but says nothing about pagination limits, behavior when page_end is null, or what happens on an invalid/unknown source ID.

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?

A single compact sentence that front-loads the action and result with no filler. Its brevity is achieved through under-specification rather than tight editing, but structurally it is efficient.

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 values need not be described, and annotations cover the safety profile. However, for a 3-parameter tool with 0% schema coverage and four siblings, the description leaves the agent without parameter meaning or sibling routing – a significant completeness 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 0% across all three parameters. The description only obliquely implies source_id (an 'indexed source ID') and page_start/page_end ('page-numbered'), with no explanation of the default page_start=1, the null semantics of page_end, or ID format. This does not compensate for the missing schema documentation.

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 verb and resource (resolve a source ID, return PDF text with page numbers), but never mentions what is specific to this tool: agency RFO deviations. It reads identically to what get_rfo_part or get_rfo_guidance might do, so an agent cannot distinguish it from its siblings based on the 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 instead of list_rfo_agency_deviations (which presumably supplies source_ids) or get_rfo_part/get_rfo_guidance. The phrase 'indexed source ID' hints that the ID comes from a listing step, but no explicit routing or prerequisites are given.

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