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

Annotations already declare readOnlyHint=true, openWorldHint=false, destructiveHint=false, so the safety profile is covered. The description adds that every field its page shows is returned plus a canonical URL, which is useful content context, but the output schema exists so return values needn't be re-explained. A 3 reflects modest added context.

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 front-loaded sentence with zero waste; the key scope (one practice by slug) and output contents are stated immediately.

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 single-read tool with full annotations and an output schema, the description is nearly complete, but with 0% parameter schema coverage it should explain what a slug is and where to get one. That gap is the main incompleteness.

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 coverage is 0%, and the schema only gives type/pattern/length constraints without describing what a 'slug' is or how to obtain one. The description mentions 'by slug' but adds no meaning beyond the parameter name — it doesn't say where slugs come from (e.g., from search results) or format expectations, leaving the agent to infer.

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?

Specific verb ('Get') plus resource ('DPC Finder practice') and scope ('One ... by slug'). Clearly distinguished from the sibling search_dpc_practices which lists practices, whereas this retrieves a single one.

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?

The phrase 'by slug' implies this is for single-record retrieval and implicitly contrasts with search_dpc_practices, but the description never explicitly states when to use this vs. the search sibling or when not to use it.

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