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

Annotations declare destructiveHint=true and readOnlyHint=false, so safety is already flagged; the description adds the crucial scope of that destruction — visibility is restricted to the owner rather than content being deleted. It still omits reversibility (can it be republished?) and any permission requirements for the caller.

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 tight sentence with the action front-loaded and the resulting state appended; no wasted words.

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?

Complete for a single-parameter state-change tool: schema is fully documented and no output schema exists, so return-value explanation is unnecessary. The only gap is that an agent gets no signal about reversibility or re-publishing before committing a destructive change.

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?

Only one parameter exists and schema description coverage is 100%, including guidance that the id or slug comes exactly from list_forges/get_forge. The description adds no additional parameter meaning, 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?

Names a specific verb+resource ('Make a forge private') and states the resulting scope ('only its owner can see it'). This inherently distinguishes it from the inverse sibling publish_forge without ambiguity.

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?

Implies the precondition that the forge is currently published ('published forge private again'), which is useful. However, it never states when-not to use it or names the counterpart tool (publish_forge) for re-publishing, leaving routing to inference.

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