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

Annotations already declare destructiveHint=true and idempotentHint=false, so the safety profile is covered structurally. The description adds nothing beyond that: it doesn't state that the previous guidance is overwritten, whether the process must already have guidance, or what permissions are needed. For a destructive mutation it is thin on behavioral 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 short sentence with no wasted words and the key noun phrase up front. It is efficient, though its brevity borders on under-specification rather than tight conciseness.

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 2-parameter destructive update with full schema coverage and no output schema, the annotations carry the safety profile and the schema carries the parameters. However, the description omits whether the process must already have guidance, whether the write is replace-in-full, and any error/authorization context, leaving real gaps for a destructive mutation.

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% — both 'id' (clarity process ID) and 'content' (replacement guidance, max 5000 chars) are fully documented in the schema. The description adds no parameter meaning beyond the schema, so the 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 (Update) and resource (the automation guidance message for a clarity process), which is clear enough for an agent to act on. It doesn't explicitly differentiate from sibling createClarityGuidance, but the verb+resource pairing makes the create-vs-update distinction inferable.

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 when-to-use guidance, prerequisites, or alternatives are provided. The agent must infer that this is used to modify existing guidance rather than create new guidance (createClarityGuidance) from the name alone.

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