validate_json

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

The description discloses the cost ($0.001 USDC via x402), which is a behavioral trait beyond the schema. However, it does not describe what validation entails, return format, error behavior, or any side effects. With no annotations, this falls short of the burden of disclosure.

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 concise and front-loaded, but the first sentence is largely redundant with the name, and the only useful detail is the cost. It is not verbose, but it does not fully earn its length due to the vague 'JSON & Data tool' filler.

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?

The description is extremely incomplete for a tool with no annotations, no output schema, and a generic param wrapper. It lacks essential information about invocation, parameters, outputs, or error handling, making it inadequate for an agent to invoke 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?

The input schema has a single generic 'params' object that conveys no meaning about actual parameters. The description adds no information about what parameters are required (e.g., json_string) or how to provide them, leaving parameter semantics completely undefined.

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 merely restates the name ('validate json') and adds a generic category 'JSON & Data tool' without specifying that it validates JSON syntax. It fails to state the actual function and does not distinguish from sibling tools like process_json or json_path_query.

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 guidance is provided on when to use this tool versus alternatives. The description gives no context, prerequisites, or exclusions, leaving the agent without direction on appropriate use cases.

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