Validate server.json

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

Annotations already declare readOnlyHint:true, so the description adds the specific 'validate' behavior but does not go beyond the annotation's safety profile. It reinforces that this is a read-only operation but adds no new behavioral details.

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?

The description is a single, tightly worded sentence with no filler words. The verb 'Validate' is front-loaded, and the scope is immediately clear.

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?

Given the simple single-parameter tool and the presence of an output schema (which handles return details), the description covers the essential purpose and the non-publishing aspect. No additional information is strictly needed for an agent to call it correctly.

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%, so the description must compensate. It clarifies that the server_json parameter refers to 'server.json metadata', adding meaning beyond the generic 'Server Json' in the schema. However, it does not explain the object vs. string distinction or expected format beyond that.

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 clearly states the specific verb 'Validate', the resource 'MCP Registry server.json metadata', and adds the scope 'without publishing it'. This distinguishes it from a publish action and clearly separates it from sibling tools like search_servers or prepare_publish_checklist.

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 'without publishing it' provides clear context that this tool is for pre-publish validation, implying when it should be used. However, it does not explicitly name alternatives or exclusions, though the context makes usage obvious.

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