update_registry_item

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

The description adds the critical behavior of being a full replace beyond annotations (only destructiveHint: false). It warns that missing fields would be overwritten, but doesn't detail consequences or return behavior.

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?

Single, efficient sentence that conveys the key constraint immediately. 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?

Provides essential behavioral context (full replace) but lacks return format, prerequisites (e.g., item existence), and error handling. With 7 required params and no output schema, more guidance is warranted.

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?

With only 29% schema coverage, the description should compensate for undocumented parameters but does not. It only states the overall replace behavior, not individual field meanings.

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?

Clearly states the action (update) and resource (registry item), with the qualifier 'full replace' differentiating from adding or removing. Sibling tool names confirm distinct purpose.

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?

Explicitly says all fields must be supplied and it's a full replace, guiding the agent to use this only when it has complete data. However, no explicit when-not or alternative references.

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