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

With no annotations provided, the description carries the full burden of behavioral disclosure. It fails to mention what the tool does, what side effects or transformations occur, or what the output format is. The only behavioral hint is the price, which is irrelevant to operation.

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 extremely short but not concise in a useful way. It includes irrelevant metadata (auto-created, price) while omitting essential functional information. Every word fails to serve the agent's need to understand the tool.

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 tool with one parameter and no output schema, the description must at minimum explain the tool's purpose and input format. It does neither, making it impossible for an agent to correctly invoke the tool. The lack of any functional context renders the definition completely inadequate.

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 sole parameter 'input' has a schema description of 'entrada' (input), which is tautological and provides no meaning. The tool description adds no clarification about what the input should contain (e.g., a JSON string, a file path, a URL) or how it will be used.

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 does not state what the tool does. It only mentions it was auto-created from real demand and includes a price (0.02 USDC). The name 'extraer-json' hints at extracting JSON, but the description itself provides no explicit purpose or function, leaving the agent to guess.

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 like 'extract-json' or 'json-fix'. The description contains no context about the intended use case or conditions for selection.

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